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Difference between revisions of "Temporomandibular Joint"
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According to the DC/TMD, DJD is present when there is a self-assessment during the consultation or a history of TMJ noise, and test results show crepitus during maximum active open, passive open, right lateral, left lateral, or protrusive detected by the examiner. | According to the DC/TMD, DJD is present when there is a self-assessment during the consultation or a history of TMJ noise, and test results show crepitus during maximum active open, passive open, right lateral, left lateral, or protrusive detected by the examiner. | ||
There is no systematic review in the literature that addresses the topic mentioned in vivo, which highlights the importance of this section of Masticationpedia to understand how correct or limiting it is to make a diagnosis through imaging (CT, Cone beam, MNR, etc.) in a multifactorial functional pain manifestation. (Figures 1-4)<gallery widths=" | There is no systematic review in the literature that addresses the topic mentioned in vivo, which highlights the importance of this section of Masticationpedia to understand how correct or limiting it is to make a diagnosis through imaging (CT, Cone beam, MNR, etc.) in a multifactorial functional pain manifestation. (Figures 1-4) | ||
<center> | |||
<gallery widths="350" heights="282" perrow="4" mode="slideshow"> | |||
File:Politomography TMJ.jpg|'''Figure 1:''' Polytomography of TMJ with closed mouth | File:Politomography TMJ.jpg|'''Figure 1:''' Polytomography of TMJ with closed mouth | ||
File:MR Sagital TMJ.jpg|'''Figure 2:''' MRI, sagittal view of the ATM | File:MR Sagital TMJ.jpg|'''Figure 2:''' MRI, sagittal view of the ATM | ||
File:MR frontal TMJ .jpg|'''Figure 3:''' MRI, frontal view of the TMJ | File:MR frontal TMJ .jpg|'''Figure 3:''' MRI, frontal view of the TMJ | ||
File:TC -TMJ.jpg|'''Figure 5:''' CT of the temporomandibular joints | File:TC -TMJ.jpg|'''Figure 5:''' CT of the temporomandibular joints | ||
</gallery>The specific question is as follows:{{q2|Could focusing on diagnostic imaging in an individual reporting orofacial pain and/or masticatory function disturbances compromise the differential diagnosis?}}Interpretation of TMJ imaging requires an understanding of normal joint anatomy. | </gallery> | ||
</center> | |||
The specific question is as follows:{{q2|Could focusing on diagnostic imaging in an individual reporting orofacial pain and/or masticatory function disturbances compromise the differential diagnosis?}}Interpretation of TMJ imaging requires an understanding of normal joint anatomy. | |||
As well described in the article by Seyed Mohammad Gharavi et al.<ref>Seyed Mohammad Gharavi, Yujie Qiao, Armaghan Faghihimehr, and Josephina Vossen. Imaging of the Temporomandibular Joint. Diagnostics (Basel). 2022 Apr; 12(4): 1006. Published online 2022 Apr 16. doi: 10.3390/diagnostics12041006. PMCID: PMC9031630. PMID: 35454054</ref> the TMJ is a synovial joint between the glenoid fossa of the temporal bone and the mandibular condyle. The central anatomical structure of the TMJ is the articular disc or meniscus. The disc is an oval-shaped fibrocartilaginous structure composed of anterior and posterior articular bands and a thinner center, called the intermediate zone. The intermediate zone gives the disc a biconcave appearance in the sagittal view. The posterior band is generally thicker than the anterior band and both bands are wider in the transverse dimension than in the anteroposterior dimension. The retrodisc tissue or bilaminar zone is rich neurovascular tissue that serves as the posterior attachment of the disc, fusing the disc with the joint capsule and temporal bone. (Figure 5) | As well described in the article by Seyed Mohammad Gharavi et al.<ref>Seyed Mohammad Gharavi, Yujie Qiao, Armaghan Faghihimehr, and Josephina Vossen. Imaging of the Temporomandibular Joint. Diagnostics (Basel). 2022 Apr; 12(4): 1006. Published online 2022 Apr 16. doi: 10.3390/diagnostics12041006. PMCID: PMC9031630. PMID: 35454054</ref> the TMJ is a synovial joint between the glenoid fossa of the temporal bone and the mandibular condyle. The central anatomical structure of the TMJ is the articular disc or meniscus. The disc is an oval-shaped fibrocartilaginous structure composed of anterior and posterior articular bands and a thinner center, called the intermediate zone. The intermediate zone gives the disc a biconcave appearance in the sagittal view. The posterior band is generally thicker than the anterior band and both bands are wider in the transverse dimension than in the anteroposterior dimension. The retrodisc tissue or bilaminar zone is rich neurovascular tissue that serves as the posterior attachment of the disc, fusing the disc with the joint capsule and temporal bone. (Figure 5) | ||
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The ATM has two compartments that work like two small joints within the same capsule. This allows for more range of motion relative to the size of the joint. The superior compartment separates the glenoid fossa of the temporal bone from the disc, while the inferior compartment separates the disc from the mandibular condyle. In the initial stage of mouth opening, the condyle rotates in the inferior articular compartment. It then translates anteriorly into the upper compartment.<ref>Som P.M., Curtin H.D. Head and Neck Imaging—2 Volume Set. Mosby Elsevier; Maryland Heights, MO, USA: 2011. Expert Consult—Online and Print.</ref> The lateral pterygoid muscle helps open the jaw, and the medial pterygoid, masseter, and temporal muscles help close the jaw. As the condyle translates anteriorly, the disc should move between the condyle and the articular eminence. A normal disc does not move in the coronal plane during mouth opening. | The ATM has two compartments that work like two small joints within the same capsule. This allows for more range of motion relative to the size of the joint. The superior compartment separates the glenoid fossa of the temporal bone from the disc, while the inferior compartment separates the disc from the mandibular condyle. In the initial stage of mouth opening, the condyle rotates in the inferior articular compartment. It then translates anteriorly into the upper compartment.<ref>Som P.M., Curtin H.D. Head and Neck Imaging—2 Volume Set. Mosby Elsevier; Maryland Heights, MO, USA: 2011. Expert Consult—Online and Print.</ref> The lateral pterygoid muscle helps open the jaw, and the medial pterygoid, masseter, and temporal muscles help close the jaw. As the condyle translates anteriorly, the disc should move between the condyle and the articular eminence. A normal disc does not move in the coronal plane during mouth opening. | ||
{{q2|A little diagnostic imaging never hurts but above all it is necessary to objectively interpret the radiographic data of the TMJ}} | |||
{{Bib}} | {{Bib}} | ||
[[Category:Gianni]] | [[Category:Gianni]] | ||