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As now implicit, this clinical case too, which from now on we will call with a fancy name <u>Balancer</u>' due to its related symptoms of postural and gait disturbance after being prosthetically rehabilitated, will follow the presentation model of the previous clinical cases. The introduction will present topics relating to the diagnostic model in question on which we will make the first conceptual reflections highlighted by our dear and thoughtful Linus. A recent article by Minervini et al.<ref>Giuseppe Minervini, Rocco Franco, Maria Maddalena Marrapodi, Salvatore Crimi, Almir Badnjević, Gabriele Cervino, Alberto Bianchi, and Marco Cicciù. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095000/ Correlation between Temporomandibular Disorders (TMD) and Posture Evaluated trough the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD): A Systematic Review with Meta-Analysis]. J Clin Med. 2023 Apr; 12(7): 2652. Published online 2023 Apr 2. doi: 10.3390/jcm12072652.PMCID: PMC10095000.PMID: 37048735 | As now implicit, this clinical case too, which from now on we will call with a fancy name <u>Balancer</u>' due to its related symptoms of postural and gait disturbance after being prosthetically rehabilitated, will follow the presentation model of the previous clinical cases. The introduction will present topics relating to the diagnostic model in question on which we will make the first conceptual reflections highlighted by our dear and thoughtful Linus. A recent article by Minervini et al.<ref>Giuseppe Minervini, Rocco Franco, Maria Maddalena Marrapodi, Salvatore Crimi, Almir Badnjević, Gabriele Cervino, Alberto Bianchi, and Marco Cicciù. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10095000/ Correlation between Temporomandibular Disorders (TMD) and Posture Evaluated trough the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD): A Systematic Review with Meta-Analysis]. J Clin Med. 2023 Apr; 12(7): 2652. Published online 2023 Apr 2. doi: 10.3390/jcm12072652.PMCID: PMC10095000.PMID: 37048735 | ||
</ref> asserts the following: TMD has ligament and muscle connections with the cervical area, therefore these connections have led to the hypothesis that posture problems may influence the development of TMD, <ref>An J.-S., Jeon D.-M., Jung W.-S., Yang I.-H., Lim W.H., Ahn S.-J. Influence of temporomandibular joint disc displacement on craniocervical posture and hyoid bone position. Am. J. Orthod. Dentofac. Orthop. 2015;147:72–79. doi: 10.1016/j.ajodo.2014.09.015.</ref><ref>Lee W.Y., Okeson J.P., Lindroth J. The relationship between forward head posture and temporomandibular disorders. J. Orofac. Pain. 1995;9 </ref><ref>Minervini G., Mariani P., Fiorillo L., Cervino G., Cicciù M., Laino L. Prevalence of temporomandibular disorders in people with multiple sclerosis: A systematic review and meta-analysis. CRANIO® 2022:1–9. doi: 10.1080/08869634.2022.2137129.</ref><ref>Minervini G.D., Del Mondo D.D., Russo D.D., Cervino G.D., D’Amico C.D., Fiorillo L.D. Stem Cells in Temporomandibular Joint Engineering: State of Art and Future Persectives. J. Craniofacial Surg. 2022;33:2181–2187. doi: 10.1097/SCS.0000000000008771.</ref><ref>Crescente G., Minervini G., Spagnuolo C., Moccia S. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9822121/ Cannabis Bioactive Compound-Based Formulations: New Per-spectives for the Management of Orofacial Pain]. Molecules. 2022;28:106. doi: 10.3390/molecules28010106.</ref> therefore masticatory cycles should be balanced as unilateral chewing could alter the postural balance of the body. Stabilization splints can bring about neuromuscular balance, removing posterior interference and providing a stable occlusal relationship and an optimization of the centric relationship. The relationship between craniometric posture and TMD has been studied, however, despite the huge number of studies, clinicians and academics still remain unconvinced.<ref>Abe S., Kawano F., Matsuka Y., Masuda T., Okawa T., Tanaka E. Relationship between Oral Parafunctional and Postural Habits and the Symptoms of Temporomandibular Disorders: A Survey-Based Cross-Sectional Cohort Study Using Propensity Score Matching Analysis. J. Clin. Med. 2022;11:6396. doi: 10.3390/jcm11216396.</ref> | </ref> asserts the following: TMD has ligament and muscle connections with the cervical area, therefore these connections have led to the hypothesis that posture problems may influence the development of TMD, <ref>An J.-S., Jeon D.-M., Jung W.-S., Yang I.-H., Lim W.H., Ahn S.-J. Influence of temporomandibular joint disc displacement on craniocervical posture and hyoid bone position. Am. J. Orthod. Dentofac. Orthop. 2015;147:72–79. doi: 10.1016/j.ajodo.2014.09.015.</ref><ref>Lee W.Y., Okeson J.P., Lindroth J. The relationship between forward head posture and temporomandibular disorders. J. Orofac. Pain. 1995;9 </ref><ref>Minervini G., Mariani P., Fiorillo L., Cervino G., Cicciù M., Laino L. Prevalence of temporomandibular disorders in people with multiple sclerosis: A systematic review and meta-analysis. CRANIO® 2022:1–9. doi: 10.1080/08869634.2022.2137129.</ref><ref>Minervini G.D., Del Mondo D.D., Russo D.D., Cervino G.D., D’Amico C.D., Fiorillo L.D. Stem Cells in Temporomandibular Joint Engineering: State of Art and Future Persectives. J. Craniofacial Surg. 2022;33:2181–2187. doi: 10.1097/SCS.0000000000008771.</ref><ref>Crescente G., Minervini G., Spagnuolo C., Moccia S. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9822121/ Cannabis Bioactive Compound-Based Formulations: New Per-spectives for the Management of Orofacial Pain]. Molecules. 2022;28:106. doi: 10.3390/molecules28010106.</ref> therefore masticatory cycles should be balanced as unilateral chewing could alter the postural balance of the body. Stabilization splints can bring about neuromuscular balance, removing posterior interference and providing a stable occlusal relationship and an optimization of the centric relationship. The relationship between craniometric posture and TMD has been studied, however, despite the huge number of studies, clinicians and academics still remain unconvinced.<ref>Abe S., Kawano F., Matsuka Y., Masuda T., Okawa T., Tanaka E. [https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/36362625/ Relationship between Oral Parafunctional and Postural Habits and the Symptoms of Temporomandibular Disorders: A Survey-Based Cross-Sectional Cohort Study Using Propensity Score Matching Analysis.] J. Clin. Med. 2022;11:6396. doi: 10.3390/jcm11216396.</ref> | ||
=== '''''[[File:Question 2.jpg|50x50px|link=https://wiki.masticationpedia.org/index.php/File:Question_2.jpg|left]]''Centric Relationship and Posture''' === | === '''''[[File:Question 2.jpg|50x50px|link=https://wiki.masticationpedia.org/index.php/File:Question_2.jpg|left]]''Centric Relationship and Posture''' === | ||
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</gallery></center>In conclusion, at this point the problem is no longer the correlation between posture and occlusal stability but the correlation between the Centric Relation and occlusal stability because this relationship is the primus movens of the whole pathophysiological phenomenon and if we are not sure of the assertions we cannot go beyond . {{q2|Be careful, therefore, to use the term 'correlation' between Centric Relation and Posture or Occlusal stability and Posture.|}}</blockquote> | </gallery></center>In conclusion, at this point the problem is no longer the correlation between posture and occlusal stability but the correlation between the Centric Relation and occlusal stability because this relationship is the primus movens of the whole pathophysiological phenomenon and if we are not sure of the assertions we cannot go beyond . {{q2|Be careful, therefore, to use the term 'correlation' between Centric Relation and Posture or Occlusal stability and Posture.|}}</blockquote> | ||
Another recent study Inchingolo et al.<ref>Alessio Danilo Inchingolo, Carmela Pezzolla, Assunta Patano, Sabino Ceci, Anna Maria Ciocia, Grazia Marinelli, Giuseppina Malcangi, Valentina Montenegro, Filippo Cardarelli, Fabio Piras, Irene Ferrara, Biagio Rapone, Ioana Roxana Bordea, Dario Di Stasio, Antonio Scarano, Felice Lorusso, Andrea Palermo, Kenan Ferati, Angelo Michele Inchingolo, Francesco Inchingolo, Daniela Di Venere, Gianna Dipalma . Experimental Analysis of the Use of Cranial Electromyography in Athletes and Clinical Implications. Int J Environ Res Public Health. 2022 Jun 29;19(13):7975. doi: 10.3390/ijerph19137975. | Another recent study Inchingolo et al.<ref>Alessio Danilo Inchingolo, Carmela Pezzolla, Assunta Patano, Sabino Ceci, Anna Maria Ciocia, Grazia Marinelli, Giuseppina Malcangi, Valentina Montenegro, Filippo Cardarelli, Fabio Piras, Irene Ferrara, Biagio Rapone, Ioana Roxana Bordea, Dario Di Stasio, Antonio Scarano, Felice Lorusso, Andrea Palermo, Kenan Ferati, Angelo Michele Inchingolo, Francesco Inchingolo, Daniela Di Venere, Gianna Dipalma . [https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/35805630/ Experimental Analysis of the Use of Cranial Electromyography in Athletes and Clinical Implications.] Int J Environ Res Public Health. 2022 Jun 29;19(13):7975. doi: 10.3390/ijerph19137975. | ||
</ref> asserts the following: the cranial surface electromyography allows the evaluation of the occlusal state and the quantification of the neuromuscular postural balance, thus understanding the dental occlusion from a functional point of view. It therefore represents a diagnostic revolution because it allows you to see what until now was only perceptible by palpation, and therefore not quantifiable.<ref>Falla D., Dall’Alba P., Rainoldi A., Merletti R., Jull G. Repeatability of Surface EMG Variables in the Sternocleidomastoid and Anterior Scalene Muscles. Eur. J. Appl. Physiol. 2002;87:542–549. doi: 10.1007/s00421-002-0661-x</ref> A meta-analysis on the use of sEMG to evaluate the relationships between masticatory muscles and postural muscles found that the correlation between the masticatory system and the muscle activity of other parts of the body can be detected experimentally using sEMG, but this correlation has little clinic relevance .<ref>Perinetti G., Türp J.C., Primožič J., Di Lenarda R., Contardo L. Associations between the Masticatory System and Muscle Activity of Other Body Districts. A Meta-Analysis of Surface Electromyography Studies. J. Electromyogr. Kinesiol. 2011;21:877–884. doi: 10.1016/j.jelekin.2011.05.014.</ref> However, Julià-Sánchez et al. found that dental occlusion affects the biomechanical and viscoelastic properties of masticatory and postural muscles using the MyotonPRO® system.<ref>Julià-Sánchez S., Álvarez-Herms J., Cirer-Sastre R., Corbi F., Burtscher M. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7005008/ The Influence of Dental Occlusion on Dynamic Balance and Muscular Tone.] Front. Physiol. 2020;10:1626. doi: 10.3389/fphys.2019.01626</ref> The influence of the occlusal state on stability was also demonstrated in an article by Heit et al. who found a significant increase in balance at rest rather than at maximal intercuspidation.<ref>Heit T., Derkson C., Bierkos J., Saqqur M. The Effect of the Physiological Rest Position of the Mandible on Cerebral Blood Flow and Physical Balance: An Observational Study. Cranio. 2015;33:195–205. doi: 10.1179/0886963414Z.00000000063.</ref> These results are consistent with previous studies that used sEMG to measure both the muscle balance of the masticatory muscles and its influence on the activity of some postural muscles. A substantial reduction in resting postural muscle activity (sternocleidomastoid, erector spinae, and soleus) was found in participants with dental malocclusions after balancing with a bite.<ref>Bergamini M., Pierleoni F., Gizdulich A., Bergamini C. Dental Occlusion and Body Posture: A Surface EMG Study. Cranio. 2008;26:25–32. doi: 10.1179/crn.2008.041.</ref><blockquote></blockquote>[[File:Question 2.jpg|50x50px|link=https://wiki.masticationpedia.org/index.php/File:Question_2.jpg|left]] | </ref> asserts the following: the cranial surface electromyography allows the evaluation of the occlusal state and the quantification of the neuromuscular postural balance, thus understanding the dental occlusion from a functional point of view. It therefore represents a diagnostic revolution because it allows you to see what until now was only perceptible by palpation, and therefore not quantifiable.<ref>Falla D., Dall’Alba P., Rainoldi A., Merletti R., Jull G. Repeatability of Surface EMG Variables in the Sternocleidomastoid and Anterior Scalene Muscles. Eur. J. Appl. Physiol. 2002;87:542–549. doi: 10.1007/s00421-002-0661-x</ref> A meta-analysis on the use of sEMG to evaluate the relationships between masticatory muscles and postural muscles found that the correlation between the masticatory system and the muscle activity of other parts of the body can be detected experimentally using sEMG, but this correlation has little clinic relevance .<ref>Perinetti G., Türp J.C., Primožič J., Di Lenarda R., Contardo L. Associations between the Masticatory System and Muscle Activity of Other Body Districts. A Meta-Analysis of Surface Electromyography Studies. J. Electromyogr. Kinesiol. 2011;21:877–884. doi: 10.1016/j.jelekin.2011.05.014.</ref> However, Julià-Sánchez et al. found that dental occlusion affects the biomechanical and viscoelastic properties of masticatory and postural muscles using the MyotonPRO® system.<ref>Julià-Sánchez S., Álvarez-Herms J., Cirer-Sastre R., Corbi F., Burtscher M. [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7005008/ The Influence of Dental Occlusion on Dynamic Balance and Muscular Tone.] Front. Physiol. 2020;10:1626. doi: 10.3389/fphys.2019.01626</ref> The influence of the occlusal state on stability was also demonstrated in an article by Heit et al. who found a significant increase in balance at rest rather than at maximal intercuspidation.<ref>Heit T., Derkson C., Bierkos J., Saqqur M. The Effect of the Physiological Rest Position of the Mandible on Cerebral Blood Flow and Physical Balance: An Observational Study. Cranio. 2015;33:195–205. doi: 10.1179/0886963414Z.00000000063.</ref> These results are consistent with previous studies that used sEMG to measure both the muscle balance of the masticatory muscles and its influence on the activity of some postural muscles. A substantial reduction in resting postural muscle activity (sternocleidomastoid, erector spinae, and soleus) was found in participants with dental malocclusions after balancing with a bite.<ref>Bergamini M., Pierleoni F., Gizdulich A., Bergamini C. Dental Occlusion and Body Posture: A Surface EMG Study. Cranio. 2008;26:25–32. doi: 10.1179/crn.2008.041.</ref><blockquote></blockquote>[[File:Question 2.jpg|50x50px|link=https://wiki.masticationpedia.org/index.php/File:Question_2.jpg|left]] | ||
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