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</ref>
</ref>


{{q2|The diagnostics, treatment tactics and prevention of dento-facial anomalies and deformations should be considered in the context of the integrity of the child's unformed organism, the interdependence of the form and functions of its organs and systems}}
{{q2|Diagnosis, treatment strategies, and prevention of anomalies and dento-facial deformities should be approached by considering the organism as a whole, especially in children, where the physical structure is still in the formative stage. It is essential to recognize the interconnectedness between the form and function of various organs and systems of the body, as these relationships are crucial for devising an effective treatment plan that respects and promotes the harmonious development of the patient.}}


Another noteworthy fact is that if in the same 2019 Pubmed was questioned on interdisciplinarity in the diagnosis of malocclusions, the result dropped drastically to just four articles<ref>Pubmed, ''[https://www.ncbi.nlm.nih.gov/pubmed/?term=interdisciplinary+diagnostics+of+malocclusions interdisciplinary diagnostics of malocclusions]''</ref>.
Another noteworthy piece of data emerged when, also in 2019, PubMed was specifically queried for interdisciplinary approaches in diagnosing malocclusions: the results drastically decreased to only four articles.<ref>Pubmed, ''[https://www.ncbi.nlm.nih.gov/pubmed/?term=interdisciplinary+diagnostics+of+malocclusions interdisciplinary diagnostics of malocclusions]''</ref>


These premises to the "Malocclusion” question indicate, on one hand, an alert about anomalies that tend to activate Kuhn phase 4 and, on the other, a bifurcation in the epistemic choice on the subject: one that generates Incremental Innovations (others 33,309 articles, perhaps) and another that prefers a new gnoseological path of "Paradigmatic Innovation”.
This observation regarding the topic of "Malocclusion" underscores two critical points: firstly, it highlights a growing awareness of anomalies that could trigger phase 4 of Kuhn's model, suggesting a potential moment of paradigmatic shift. Secondly, it signals a bifurcation in epistemic choices regarding the topic: on one hand, the tendency to generate Incremental Innovations, as evidenced by the other 33,309 articles, and on the other hand, a propensity towards a new gnoseological trajectory that favors a "Paradigmatic Innovation".
 
To explore the concept of "Paradigmatic Innovation", considered essential in this context, let's begin by posing a specific question:
 
Another noteworthy piece of data is that if in the same year, 2019, PubMed was queried about the interdisciplinarity in diagnosing malocclusions, the result dropped drastically to only four articles.
 
These premises regarding the question of "Malocclusion" indicate, on one hand, an alertness to anomalies that tend to trigger phase 4 of Kuhn and, on the other hand, a bifurcation in epistemic choice on the topic: one that generates Incremental Innovations (other 33,309 articles, perhaps) and another that prefers a new gnoseological path of "Paradigmatic Innovation".
 
Let's try to approach part of the concept that considers "Paradigmatic Innovation" essential, asking, for example:


Let’s try to approach part of the concept that considers the "Paradigmatic Innovation” as essential, asking ourselves for example:
[[File:Occlusal Centric view in open and cross bite patient.jpg|alt=|thumb|'''Figure 1a:'''<br>Patient with malocclusion, open bite and right posterior crossbite who in rehabilitation terms should be treated with orthodontic therapy and/or orthognathic surgery.|500x500px]]
[[File:Occlusal Centric view in open and cross bite patient.jpg|alt=|thumb|'''Figure 1a:'''<br>Patient with malocclusion, open bite and right posterior crossbite who in rehabilitation terms should be treated with orthodontic therapy and/or orthognathic surgery.|500x500px]]


{{qnq|What does "Malocclusion" mean?|}}
{{qnq|What does "Malocclusion" mean?|}}


We will answer this question by reporting a clinical case of evident “Malocclusion”.  
To answer the previously posed question, let's examine a clinical case that clearly exemplifies "malocclusion".  


Patient is with an occlusion that orthodontists call “Malocclusion” because it has a posterior unilateral crossbite and anterior openbite<ref>{{cita libro  
The case involves a patient presenting a type of occlusion commonly defined by orthodontists as "malocclusion", characterized by a unilateral posterior crossbite and an anterior open bite;<ref>{{cita libro  
  | autore = Littlewood SJ
  | autore = Littlewood SJ
  | autore2 = Kandasamy S
  | autore2 = Kandasamy S
Line 399: Line 406:
  | DOI = 10.1111/adj.12475
  | DOI = 10.1111/adj.12475
  | OCLC =  
  | OCLC =  
  }} Mar;62 Suppl 1:51-57.</ref>; it is a malocclusion that can be treated with a fixed orthodontic therapy and possibly in combination with an orthognathic intervention<ref>{{cita libro  
  }} Mar;62 Suppl 1:51-57.</ref> these conditions represent a form of malocclusion that can be effectively treated through the use of fixed orthodontic appliances, sometimes in combination with orthognathic surgery if necessary.<ref>{{cita libro  
  | autore = Reichert I
  | autore = Reichert I
  | autore2 = Figel P
  | autore2 = Figel P
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  | DOI = 10.1007/s10006-013-0430-5
  | DOI = 10.1007/s10006-013-0430-5
  | OCLC =  
  | OCLC =  
  }} Sep;18(3):271-7. </ref>. Crossbite is another element of disturbance in normal occlusion<ref>{{cita libro  
  }} Sep;18(3):271-7. </ref> The crossbite is identified as a significant alteration from normal occlusion, which requires concurrent treatment with the open bite due to their functional interrelationship.<ref>{{cita libro  
  | autore = Miamoto CB
  | autore = Miamoto CB
  | autore2 = Silva Marques L  
  | autore2 = Silva Marques L  
Line 430: Line 437:
  | DOI =  
  | DOI =  
  | OCLC =  
  | OCLC =  
  }} Jan-Feb; 23(1) 71–78.</ref> because of which it is obligatorily treated together with the openbite<ref>{{cita libro  
  }} Jan-Feb; 23(1) 71–78.</ref><ref>{{cita libro  
  | autore = Alachioti XS  
  | autore = Alachioti XS  
  | autore2 = Dimopoulou E
  | autore2 = Dimopoulou E
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  | DOI =  
  | DOI =  
  | OCLC =  
  | OCLC =  
  }} Jan;5(1):21-7.</ref>. It is self-evident that an observer with a ''deterministic mindset'' facing a phenomenon of such evident occlusal incongruity considers crossbite and openbite the cause of malocclusion (cause/effect) or vice versa; and it is obvious, as well, that the observer recommends an orthodontic treatment to restore a “Normocclusion”. This way of reasoning means that the model (masticatory system) is “normalized to occlusion”, and if read backwards it means that the occlusal discrepancy is the cause of malocclusion and, therefore, of disease of the Masticatory System. (Figure 1a).  
  }} Jan;5(1):21-7.</ref>
 
It becomes clear that a deterministic approach to diagnosing such obvious occlusal incongruence might lead to considering both the crossbite and the open bite as both causes and effects of malocclusion, consequently suggesting orthodontic intervention to restore "Normocclusion". This mode of thinking would presuppose that the model (the masticatory system) should be "normalized" with respect to occlusion. Interpreted conversely, this would imply that the occlusal discrepancy is the cause of malocclusion and, by extension, pathology of the Masticatory Apparatus. (Figure 1a).
 
In the context of a clinical case highlighting the presence of malocclusion, with particular attention to the unilateral posterior crossbite and anterior open bite, the importance of dialogue between dentist and patient emerges. This informative conversation is crucial not only for sharing the diagnosis and treatment options but also for understanding the patient's concerns, expectations, and desires. Here's how such a dialogue might unfold:
 
 
'''Dentist:''' "Considering your malocclusion situation, which includes an open bite and unilateral posterior crossbite, treatment is recommended to improve both aesthetics and chewing functionality. Without intervention, you may experience future problems such as bruxism, swallowing difficulties, and potential postural issues."


'''Patient:''' "Absolutely not, doctor. I have no intention of undergoing any treatment. I may have an imperfect smile, but my chewing function is excellent. I eat without any issues, so I don't see why I should worry."


'''Dentist:''' "I understand that you feel comfortable with your current chewing condition. However, it's important to consider that some problems may not be immediately evident but could manifest over time, affecting not only oral health but also overall well-being."


But let's hear what the two players say, the dentist and the patient, in the informative dialogue.
'''Patient:''' "I appreciate your concern, doctor, but really, I have no problems chewing or swallowing. And as for bruxism or postural issues, I don't suffer from them. I'm also very physically active. For me, undergoing treatment that I don't feel is necessary would be excessive."


The dentist tells the patient that he is suffering from severe malocclusion and that it should be treated to improve its aesthetics and chewing function. The patient, however, replies firmly: «''No way, I haven't the slightest idea to do it at all, doctor, because I might even have an unrepresentative smile, but I eat very well.''»<br>The dentist’s reply is ready, so the practitioner insists by saying: «''but you have a serious malocclusion with an openbite and a unilateral posterior crossbite, you should already have problems with bruxism and swallowing, as well as posture.''»<br>The patient closes the confrontation in a decisive way: «''absolutely false: I chew very well, I swallow very well and at night I snore alot so I don’t grind; besides, I’m a sportsman and I don’t have any postural disturbance''».
'''Dentist:''' "I understand your position. It's crucial that you feel comfortable with any decision made regarding your health. My role is to inform you about potential long-term implications and available treatment options. If you ever change your mind or need further information, know that I'm here to assist you."
----The situation becomes particularly critical when we consider the patient's verbal language regarding their chewing functionality. This can be misleading, as it may not reflect a detailed understanding of the pathophysiology of the occlusal state. On the contrary, it could paradoxically indicate an intact system if interpreted through a "machine language" converted into verbal terms. In this impasse, neither the patient nor the observer (dentist) can assert with certainty the presence of an actual "Malocclusion."


Now the conclusion remains very critical because we might be finding ourselves in front of a verbal language of the patient which is misleading because it is not specific and does not respond to a detailed physiopathogenetic knowledge of the occlusal state; or, paradoxically, we are otherwise facing a machine language converted into verbal language which guarantees the integrity of the system. At this point the situation is truly embarrassing because neither the patient nor the observer (dentist) will be able to say with certainty that the System is in a “Malocclusion” state.
In this context, the reference to the American Statistical Association's critique entitled "Statistical inference in the 21st century: A World Beyond p < 0.05" becomes relevant, as it invites the researcher to navigate uncertainty with sensitivity, reflexivity, openness, and modesty in assertions.<ref name="wasser" /> This stance paves the way for interdisciplinarity as a key to addressing such complex issues.


It is precisely at this moment that one remembers the criticism of the American Statistician Association titled “''Statistical inference in the 21st century: A World Beyond p <0.05''”, which urges the researcher to accept uncertainty, be sensible reflective, open and modest in his statements<ref name="wasser" />: which basically translates into a search for interdisciplinarity.
The interdisciplinary approach becomes crucial in interpreting the biological phenomenon of "Malocclusion" through a stochastic mindset, which will be explored in more detail later.


Interdisciplinarity, in fact, could answer such a complex question; but it is nonetheless necessary to interpret the biological phenomenon of "“Malocclusion”" with a ''stochastic forma mentis of'' which we will discuss in detail later..
A stochastic observer might note that, at time <math>T_n </math>, there is a low probability that the patient is in a state of occlusal disease, given their expression of optimal psychophysical well-being. This leads to the conclusion that occlusal discrepancy does not necessarily entail a neuromuscular and psychophysical functional disorder. Therefore, the masticatory system should not be normalized solely to occlusion but requires a broader understanding that includes the Trigeminal Nervous System.


A stochastic observer may observe that there is a low probability that the patient, at the moment <math>T_n </math>, is in a state of occlusal disease, as the patient's natural language indicates ideal psychophysical health; he/she then concludes that the occlusal discrepancy could not be a cause of neuromuscular and psychophysical functional disorder. In this case, therefore, the Masticatory System can not only be normalized to the occlusion only, but a more complex model is needed too, so it has to be normalized to the Trigeminal Nervous System. The patient was then served a series of trigeminal electrophysiological tests to assess the integrity of his/her Trigeminal Nervous System in these “"Malocclusion”" clinical conditions.
To assess the integrity of the patient's Trigeminal Nervous System in the presence of "malocclusion," specific electrophysiological tests were performed. The results of these tests, shown in Figures 1b, 1c, and 1d (with explanations in the captions), should be interpreted as a "Conceptual Rationale" within the context of the "Malocclusion" issue. These introductory data reveal an apparent discrepancy between the occlusal state, which traditionally might be considered pathological, and the neurophysiological data demonstrating perfect synchronization and symmetry of trigeminal reflexes.


We can see the following output responses, which we report directly in figures 1b, 1c and 1d (with explanation in the caption, to simplify the discussion). These tests and their description by now should only be considered as “Conceptual Rationale” for the “Malocclusion” question; later they will be widely described and their analysis detailed in the specific chapters. It can already be noted in this first descriptive approach to the masticatory phenomenon that there is an evident discrepancy between the occlusal state (which at first would support the orthodoxy of classical orthodontics in considering it as “Malocclusive State”) and the neurophysiological data indicating incredible synchronization and perfect symmetry of the trigeminal reflexes.<gallery mode="slideshow">
<gallery mode="slideshow">
File:Bilateral Electric Transcranial Stimulation.jpg|'''Figure 1b:''' Motor evoked potential from electrical transcranial stimulation of the trigeminal roots. Note the structural symmetry calculated by the peak-to-peak amplitude on the right and left masseters.
File:Bilateral Electric Transcranial Stimulation.jpg|'''Figura 1b:''' The Figure shows the results of a motor evoked potential test obtained through transcranial electrical stimulation of the trigeminal nerve roots. Attention is focused on structural symmetry, which was calculated by comparing the peak-to-peak amplitudes of evoked potentials in the right and left masseter muscles.
File:Jaw Jerk .jpg|'''Figure 1c:''' Mandibular reflex evoked by percussion of the chin through a triggered neurological hammer.
File:Jaw Jerk .jpg|'''Figura 1c:''' This figure shows the jaw reflex evoked by percussion of the chin with a piezoelectric neurological hammer. Once again, what stands out is the observed functional symmetry, highlighted by the analysis of peak-to-peak amplitude in the right and left masseter muscles. Functional symmetry in a malocclusion condition suggests that reflexive responses of the masticatory system can remain effectively balanced despite occlusal discrepancies. This further reinforces the argument that a diagnosis of malocclusion does not necessarily translate into manifest neuromuscular dysfunctions, and that the integrity of the masticatory system can be maintained.
File:Mechanic Silent Period.jpg|'''Figure 1d:''' Mechanical silent period evoked by percussion of the chin through a triggered neurological hammer. Note the functional symmetry calculated on the integral area of the right and left masseters.  
File:Mechanic Silent Period.jpg|'''Figura 1d:''' Illustrates the evoked mechanical silent period elicited by percussion of the chin with a triggered neurological hammer. This type of measurement focuses on the integral area of the right and left masseter muscles, and what emerges prominently is the functional symmetry between the two sides. The presence of this symmetry underscores that, despite the malocclusion condition, neuromuscular dynamics, specifically in terms of reflex inhibition after stimulation, are maintained in a balanced equilibrium.
</gallery>
</gallery>


These results can be attributed to anything less than a "malocclusion": we are obviously in front of an error of the logic Language in medicine, in this case it is in fact more appropriate to talk about:
Through the examination of these electrophysiological data – Figures 1b, 1c, and now 1d – a picture emerges that challenges conventional interpretations of malocclusion and its clinical implications. The observed functional symmetry in these measurements indicates that the approach to diagnosing and treating malocclusions could significantly benefit from a broader evaluation, including detailed analysis of neuromuscular function. These results emphasize the importance of an interdisciplinary and integrated diagnostic and therapeutic model that goes beyond simply correcting occlusal discrepancies to include an overall assessment of the well-being of the masticatory system and, by extension, the patient.


{{qnq|Occlusal dysmorphism and not Malocclusion (which, as we shall see a little further on, is quite another thing)|}}
{{qnq|Occlusal Dismorphisms and Not Malocclusion
(...which, as we will see shortly, is an entirely different matter.)|}}


== Conclusion==
== Conclusion==

Revision as of 18:09, 23 March 2024

Introduction


Abstract

Occlusal Centric view in open and cross bite patient.jpg

The introduction of Masticationpedia offers a deep and complex analysis on themes that span the evolution of science, with a particular focus on medicine and dentistry. It begins by examining the epistemological transformation of science through the lens of Kuhn's paradigms, emphasizing the importance of paradigmatic changes that science, including dentistry, has experienced and continues to experience. The document outlines the stages of paradigmatic change proposed by Kuhn, applying them to the field of dentistry, where it highlights a paradigmatic crisis that calls for an evolution towards new paradigms, especially in masticatory rehabilitation. The discussion extends to epistemology, considering how science acquires knowledge and addresses the issue of the verifiability of scientific theories. A critical emphasis is placed on the use and interpretation of the P value in scientific statistics, highlighting the ongoing debate about its reliability as an indicator.

The text strongly emphasizes the crucial role of interdisciplinary research, proposing the use of "metacognitive scaffolds" to overcome communicative difficulties between different disciplines. It proposes a holistic and interdisciplinary approach to understanding masticatory disorders, particularly malocclusion, which is explored not only from the traditional orthodontic perspective but also through a broader lens that considers the masticatory system as a whole.

Through the examination of a clinical case study, the traditional interpretation of malocclusion is questioned, suggesting that understanding malocclusion requires a view that considers the complexity of the masticatory system and its interaction with the nervous system. The introduction concludes by highlighting the importance of paradigmatic innovations that go beyond incremental improvements, to embrace a change in thinking that profoundly influences masticatory science.

This approach represents an invitation to overcome the limits of traditional dental conventions, proposing a model of understanding and treatment of masticatory disorders that is truly interdisciplinary, based on principles of open and inclusive science, oriented towards the acceptance of uncertainty, and the holistic evaluation of the patient.


 

Masticationpedia
Article by  Gianni Frisardi

 

Ab ovo[1]

Before diving into the analysis of Masticationpedia, it is necessary to introduce some preliminary considerations. These concern, in particular, two fundamental dimensions - social, scientific, and clinical - that are characteristic of both the current era and the one immediately preceding it.

The phases of paradigm change according to Thomas Kuhn

In the course of the last century, there has been an exponential increase in technological and methodological "Innovations",[2] especially in the field of dentistry. These advancements have significantly influenced decision-making strategies, opinions, schools of thought, and axioms, aiming explicitly at improving the quality of life, as highlighted in the "Science of Exposure in the 21st Century".[3] However, this exponential growth implicitly hides conceptual ambiguities - or, in practical terms, "side effects" - which, although sometimes underestimated, have the power to challenge some scientific certainties, making them less rigid and more subject to probability.[4] The sensitive aspects of the current social, scientific, and clinical reality, which may seem contrasting, will be revealed to be complementary by the end of this reading; this is the "Progress of science" according to Kuhn's interpretation and "Epistemology".

In analyzing the progress of science, Thomas Kuhn, in his most famous work, argues that science develops through distinct cycles, reflecting its operational dynamics.[5][6] Kuhn advances the idea that science is structured around paradigms and establishes a clear demarcation between science and pseudoscience, based on the presence of a shared paradigm. For him, the evolution of scientific progress is seen as a continuous curve, yet interrupted by discontinuities represented by paradigm shifts.

Taking on the role of a skilled problem solver, the scientist is engaged in resolving these anomalies. These moments of discontinuity, or scientific revolutions, occur when the existing paradigm can no longer adequately interpret new anomalies, thereby pushing the scientific community towards the exploration and eventual adoption of new paradigms that better align with emerging observations.

Kuhn's phases in Dentistry

Thomas Kuhn identifies in the evolution of a scientific paradigm five distinct phases, a process that holds crucial importance for Masticationpedia. To stay in line with the project's objectives, we will focus on the description of the three most significant phases, as outlined in the book's index.

The phases of paradigm change according to Thomas Kuhn

Thomas Kuhn in his most famous work states that science cyclically passes through some phases indicative of its operation. According to Kuhn, science is paradigmatic, and the demarcation between science and pseudoscience can be traced back to the existence of a paradigm. The evolution of scientific progress is assimilated to a continuous curve which undergoes discontinuity in paradigm changes.

Kuhn's phases in Dentistry

Kuhn, on the other hand, divides the evolution of a paradigm into five phases; this is a fundamental process for Masticationpedia, but to stay tuned with the project we will limit ourselves to describing the three most significant phases shared in the project and indicated in the index of the book:

  • Phase 2, or the Normal Science
    For instance, in the second phase of Kuhn's paradigms, called "Normal Science," scientists are considered problem solvers engaged in strengthening the correspondence between the paradigm and natural reality. This phase is based on a set of fundamental principles established by the paradigm itself, which are not subject to dispute but are instead used to define the guidelines for future research projects. During this phase, the development of the necessary measurement tools to conduct experiments takes place, and the majority of the scientific literature is produced. The results obtained in this phase contribute significantly to the advancement of scientific knowledge. In normal science, both successes and failures occur; the latter are identified by Kuhn as "anomalies," i.e., events that contradict the prevailing paradigm.
 
  • Phase 4, or the Crisis of the Paradigm
    In response to the crisis, there will be the formation of several new paradigms during this period. These emerging paradigms, therefore, will not originate from the successes of the previous theory, but rather from the rejection of the established models of the dominant paradigm. Continuing along this line, Masticationpedia will dedicate attention to the crisis of the masticatory rehabilitative paradigm, through the review of theories, theorems, axioms, currents of thought, and diagnostic research criteria. Subsequently, the focus will shift to the fifth phase.
 
  • Phase 5, or the Scientific Revolution
    Phase 5 is characterized by the scientific revolution. During the period of extraordinary scientific activities, a debate will develop within the scientific community on which new paradigm to adopt. However, the prevailing paradigm will not necessarily be the "truest" or most efficient one, but rather the one that manages to arouse the interest of a sufficient number of scientists and earn the trust of the community. According to Kuhn, competing paradigms have nothing in common, not even the foundations, making them "incommensurable." The choice of paradigm, as mentioned, occurs on socio-psychological or biological bases, with younger scientists replacing the older ones. This battle between paradigms will resolve the crisis, the new paradigm will be named, and science will return to Phase 1. Following the same principle of Phase 4, Masticationpedia will introduce, in the chapter named "Extraordinary Sciences," a new paradigmatic model in the field of Masticatory System rehabilitation, examining its principles, motivations, scientific clinical experiences, and particularly, a radical change in the field of medical diagnostics. This change is fundamentally based on "System Inference," rather than symptom-based inference, assigning primary importance to the objectivity of data.

It's almost taken for granted that Kuhn's scientific philosophy gives priority to discipline, since an anomaly within the genetic paradigm will be more easily recognized by a geneticist rather than a neurophysiologist. This concept, however, seems to contradict the epistemological evolution of Science, thereby making a detailed analysis of this apparent discrepancy appropriate.


Epistemology

The black swan symbolizes one of the historical problems of epistemology: if all the swans we have seen so far are white, can we decide that all the swans are white?
Really?
Black Swan (Cygnus atratus) RWD.jpg
 
Duck-Rabbit illusion.jpg
Kuhn used optical illusion to demonstrate how a paradigm shift can cause a person to see the same information in a completely different way: which animal is the one here aside?
Sure?


Epistemology (from the Greek ἐπιστήμη, epistēmē, meaning "certain knowledge" or "science", and λόγος, logos, "discourse") represents that branch of philosophy dedicated to the study of the necessary conditions for acquiring scientific knowledge and the methods through which such knowledge can be achieved.[7] This term specifically refers to that section of gnoseology that investigates the foundations, the validity, and the limits of scientific knowledge. In English-speaking countries, the concept of epistemology is commonly employed almost as a synonym for gnoseology or theory of knowledge, that is, the discipline that examines the study of knowledge in general.

It is important to emphasize that the central problem of epistemology, today as in the times of Hume, is the issue of verifiability.[8][9]

The Hempel's paradox asserts that the observation of every white swan provides support to the statement that all ravens are black;[10] in other words, every example that does not contradict the theory confirms a part of it. According to this paradox:

According to the criterion of falsifiability, no theory can be considered definitively true, as although there is only a finite number of experiments that can confirm it, theoretically there is an infinite number of experiments that could refute it.[11]

But it’s not all so obvious...

...because the very concept of epistemology meets continuous implementations, like in medicine:

  • : In medicine, for example, to confirm an experiment or validate a series of data collected through laboratory instruments or surveys, reliance is placed on "Statistical Inference," and in particular on a well-known value called "significance test" (P-value). However, even this concept, now rooted in the practice of researchers, is being questioned. A recent study has focused attention on a campaign conducted in the journal "Nature" against the use of the "significance test."[12] With over 800 signatories, including eminent scientists, this campaign can be seen as an important turning point and a "Silent Revolution" in the field of statistics, touching logical and epistemological aspects.[13][14][15] The critique is aimed at overly simplified statistical analyses, still present in numerous publications. This has stimulated a debate, sponsored by the American Statistical Association, which led to the creation of a special issue of "The American Statistician Association" titled "Statistical Inference in the 21st Century: A World Beyond p < 0.05", containing 43 articles by statisticians looking towards the future[16]. This special issue proposes new ways to communicate the significance of research findings beyond the arbitrary threshold of a P-value and offers guidelines for research that accepts uncertainty, is reflective, open, and modest in claims.[16] The future will reveal whether these attempts to provide more solid statistical support to science, beyond traditional significance tests, will find resonance in future publications.[17] This evolution aligns with Kuhn's concept of scientific progress, reflecting a reworking of some descriptive statistical content within the discipline.
  • Interdisciplinarity:
    In the field of science policy, it is universally recognized that solving science-based problems requires an interdisciplinary research approach (IDR), as highlighted by the European Union's Horizon 2020 project.[18] Recent studies have explored the reasons for the cognitive and epistemic difficulties that researchers encounter in conducting IDR. One identified cause is the decline of philosophical interest towards the epistemology of IDR, attributed to the dominant "Physical Paradigm of Science." This paradigm limits the recognition of significant developments in IDR, both in the context of the philosophy of science and in the practice of research itself. In response, an alternative philosophical paradigm has been proposed, called the "Engineering Paradigm of Science," which offers alternative philosophical perspectives on fundamental aspects such as the purpose of science, the nature of knowledge, the epistemic and pragmatic criteria for the acceptance of knowledge, and the role of technological tools. Consequently, it highlights the need for researchers to make use of metacognitive support structures, called metacognitive scaffolds, to facilitate the analysis and reconstruction of the processes by which knowledge is constructed across different disciplines. In the context of IDR, such metacognitive scaffolds are essential for promoting effective communication between disciplines, allowing scholars to analyze and articulate how each discipline contributes to the construction of knowledge.[19][20]

Anomaly vs. Interdisciplinarity

A superficial view might suggest that the epistemic evolution of science is marked by an apparent opposition between the aspects of disciplinarity, highlighted by the "Physics Paradigm of Science" (which sheds light on anomalies), and those of interdisciplinarity, represented by the "Engineering Paradigm of Science" (and the related concept of metacognitive scaffold). However, as will be explored in this chapter, these two perspectives are not actually in conflict; on the contrary, they prove to be complementary, as both contribute to the generation of a "Paradigmatic Innovation" without any form of conflict.

It could then be argued that "Innovations" themselves represent "Progresses of Science," as illustrated in the article "Scientific Bases of Dentistry" by Yegane Guven. This work explores the impact of biological and digital revolutions on education and daily clinical practice in dentistry, covering topics such as personalized regenerative dentistry, nanotechnologies, virtual reality simulations, genomic information, and stem cell research.[21] Although the innovations mentioned are technological and methodological in nature, it is crucial to recognize that true scientific progress does not occur exclusively through "Incremental Innovations" or "Radical Innovations," but is fundamentally achieved through "Paradigmatic Innovations."

In the strictest sense of the term, "Paradigmatic Innovations" are a change in thinking and awareness that spreads throughout all of humanity, affecting different social layers, from the Copernican revolution to the recent trend of approaching biological phenomena with a stochastic method.[22]

This epistemological context, which includes initiatives such as the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD), Evidence-Based Medicine, and others, is further explored in the Masticationpedia project. The latter aims to highlight the dynamics and dialectics of progress in the science of masticatory rehabilitations, emphasizing the anomalies that stimulate a change in thought and, consequently, a "Paradigmatic Innovation."

Before proceeding, it might be appropriate to observe a very concrete and significant case.

Malocclusion

"Malocclusion" derives from the Latin "malum," meaning "bad" or "wrong," and literally refers to an improper closure of the teeth.[23] The notion of "closure" may seem intuitive; however, the adjective "bad" requires careful consideration, as its application in the medical context is less obvious than it may appear.

To approach an understanding of the term, this introduction poses a seemingly simple yet profoundly complex question, which in turn raises a series of related inquiries in the field of masticatory rehabilitation and, more specifically, in orthodontic disciplines: what exactly is meant by "Malocclusion"? It's interesting to note that, in 2019, a search for the term "Malocclusion" on PubMed yielded a whopping 33,309 articles,[24] indicating a lack of uniform terminological consensus on the subject. Among these articles, some may provide conclusions of significant relevance, as strikingly demonstrated by the work of Smaglyuk and colleagues. This particularly significant study explores the interdisciplinary approach in diagnosing malocclusions:[25]

«Diagnosis, treatment strategies, and prevention of anomalies and dento-facial deformities should be approached by considering the organism as a whole, especially in children, where the physical structure is still in the formative stage. It is essential to recognize the interconnectedness between the form and function of various organs and systems of the body, as these relationships are crucial for devising an effective treatment plan that respects and promotes the harmonious development of the patient.»

Another noteworthy piece of data emerged when, also in 2019, PubMed was specifically queried for interdisciplinary approaches in diagnosing malocclusions: the results drastically decreased to only four articles.[26]

This observation regarding the topic of "Malocclusion" underscores two critical points: firstly, it highlights a growing awareness of anomalies that could trigger phase 4 of Kuhn's model, suggesting a potential moment of paradigmatic shift. Secondly, it signals a bifurcation in epistemic choices regarding the topic: on one hand, the tendency to generate Incremental Innovations, as evidenced by the other 33,309 articles, and on the other hand, a propensity towards a new gnoseological trajectory that favors a "Paradigmatic Innovation".

To explore the concept of "Paradigmatic Innovation", considered essential in this context, let's begin by posing a specific question:

Another noteworthy piece of data is that if in the same year, 2019, PubMed was queried about the interdisciplinarity in diagnosing malocclusions, the result dropped drastically to only four articles.

These premises regarding the question of "Malocclusion" indicate, on one hand, an alertness to anomalies that tend to trigger phase 4 of Kuhn and, on the other hand, a bifurcation in epistemic choice on the topic: one that generates Incremental Innovations (other 33,309 articles, perhaps) and another that prefers a new gnoseological path of "Paradigmatic Innovation".

Let's try to approach part of the concept that considers "Paradigmatic Innovation" essential, asking, for example:

Figure 1a:
Patient with malocclusion, open bite and right posterior crossbite who in rehabilitation terms should be treated with orthodontic therapy and/or orthognathic surgery.

What does "Malocclusion" mean?

To answer the previously posed question, let's examine a clinical case that clearly exemplifies "malocclusion".

The case involves a patient presenting a type of occlusion commonly defined by orthodontists as "malocclusion", characterized by a unilateral posterior crossbite and an anterior open bite;[27] these conditions represent a form of malocclusion that can be effectively treated through the use of fixed orthodontic appliances, sometimes in combination with orthognathic surgery if necessary.[28] The crossbite is identified as a significant alteration from normal occlusion, which requires concurrent treatment with the open bite due to their functional interrelationship.[29][30][31]

It becomes clear that a deterministic approach to diagnosing such obvious occlusal incongruence might lead to considering both the crossbite and the open bite as both causes and effects of malocclusion, consequently suggesting orthodontic intervention to restore "Normocclusion". This mode of thinking would presuppose that the model (the masticatory system) should be "normalized" with respect to occlusion. Interpreted conversely, this would imply that the occlusal discrepancy is the cause of malocclusion and, by extension, pathology of the Masticatory Apparatus. (Figure 1a).

In the context of a clinical case highlighting the presence of malocclusion, with particular attention to the unilateral posterior crossbite and anterior open bite, the importance of dialogue between dentist and patient emerges. This informative conversation is crucial not only for sharing the diagnosis and treatment options but also for understanding the patient's concerns, expectations, and desires. Here's how such a dialogue might unfold:


Dentist: "Considering your malocclusion situation, which includes an open bite and unilateral posterior crossbite, treatment is recommended to improve both aesthetics and chewing functionality. Without intervention, you may experience future problems such as bruxism, swallowing difficulties, and potential postural issues."

Patient: "Absolutely not, doctor. I have no intention of undergoing any treatment. I may have an imperfect smile, but my chewing function is excellent. I eat without any issues, so I don't see why I should worry."

Dentist: "I understand that you feel comfortable with your current chewing condition. However, it's important to consider that some problems may not be immediately evident but could manifest over time, affecting not only oral health but also overall well-being."

Patient: "I appreciate your concern, doctor, but really, I have no problems chewing or swallowing. And as for bruxism or postural issues, I don't suffer from them. I'm also very physically active. For me, undergoing treatment that I don't feel is necessary would be excessive."

Dentist: "I understand your position. It's crucial that you feel comfortable with any decision made regarding your health. My role is to inform you about potential long-term implications and available treatment options. If you ever change your mind or need further information, know that I'm here to assist you."


The situation becomes particularly critical when we consider the patient's verbal language regarding their chewing functionality. This can be misleading, as it may not reflect a detailed understanding of the pathophysiology of the occlusal state. On the contrary, it could paradoxically indicate an intact system if interpreted through a "machine language" converted into verbal terms. In this impasse, neither the patient nor the observer (dentist) can assert with certainty the presence of an actual "Malocclusion."

In this context, the reference to the American Statistical Association's critique entitled "Statistical inference in the 21st century: A World Beyond p < 0.05" becomes relevant, as it invites the researcher to navigate uncertainty with sensitivity, reflexivity, openness, and modesty in assertions.[16] This stance paves the way for interdisciplinarity as a key to addressing such complex issues.

The interdisciplinary approach becomes crucial in interpreting the biological phenomenon of "Malocclusion" through a stochastic mindset, which will be explored in more detail later.

A stochastic observer might note that, at time , there is a low probability that the patient is in a state of occlusal disease, given their expression of optimal psychophysical well-being. This leads to the conclusion that occlusal discrepancy does not necessarily entail a neuromuscular and psychophysical functional disorder. Therefore, the masticatory system should not be normalized solely to occlusion but requires a broader understanding that includes the Trigeminal Nervous System.

To assess the integrity of the patient's Trigeminal Nervous System in the presence of "malocclusion," specific electrophysiological tests were performed. The results of these tests, shown in Figures 1b, 1c, and 1d (with explanations in the captions), should be interpreted as a "Conceptual Rationale" within the context of the "Malocclusion" issue. These introductory data reveal an apparent discrepancy between the occlusal state, which traditionally might be considered pathological, and the neurophysiological data demonstrating perfect synchronization and symmetry of trigeminal reflexes.

Through the examination of these electrophysiological data – Figures 1b, 1c, and now 1d – a picture emerges that challenges conventional interpretations of malocclusion and its clinical implications. The observed functional symmetry in these measurements indicates that the approach to diagnosing and treating malocclusions could significantly benefit from a broader evaluation, including detailed analysis of neuromuscular function. These results emphasize the importance of an interdisciplinary and integrated diagnostic and therapeutic model that goes beyond simply correcting occlusal discrepancies to include an overall assessment of the well-being of the masticatory system and, by extension, the patient.

Occlusal Dismorphisms and Not Malocclusion (...which, as we will see shortly, is an entirely different matter.)

Conclusion

Even before drawing conclusions, conceptual clarity must be made on some fundamental points which of course will be treated in detail in the specific chapters of Masticationpedia.

The Masticatory System should be considered as a “Complex System[32], not as a Biomechanical System focused exclusively on dental occlusion, because in this sense the “Occlusion” is nothing more than a subset of the Complex System interacting with the other subsets, such as periodontal receptors, neuromuscular spindles, recruitment of motor units, central nervous system, temporomandibular joint, etc., to give shape to an “Emerging Behaviour”, the masticatory one.

The peculiarity of this concept is that it is not possible to interpret or predict the “Emerging Behaviour” of a System by extracting objective data from a single subset. Instead, the integrity of the System must be quantified in its entirety, and only then can a segmentation of the whole be attempted to make an analytical description of the node itself. There are very important intellectual and scientific movements that are engaging with this issue; in this regard, the extraordinary work of Prof. Kazem Sadegh-Zadeh: Handbook of Analytic Philosophy of Medicine comes to mind.[33]

In the presented case, the question is resolved in the following language logic:

The subsets of the Masticatory System (teeth, occlusion, Temporomandibular joints, muscles, etc.) are in a state of "Coherence” with the Central Trigeminal Nervous System (see figures 1b, 1c and 1d), so the term “Malocclusion” cannot be used, the phrase “Occlusal Dismorphism” should be considered instead.
«This does not mean abolishing prosthetic, orthodontic and orthognathic masticatory rehabilitation treatments: on the contrary, this forma mentis tends to restore medical knowledge to dental rehabilitation disciplines, as well as offering an alternative to the scientific reductionism that converges in a deterministic interpretation of the biological phenomenon.»
Question 2.jpg

What do we mean by “Complex Systems” when we are talking about masticatory functions?

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    .
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