Prevalence of Posterior Disc Displacement of the Temporomandibular Joint in Patients with Temporomandibular Disorders: Systematic Review and Meta-Analyses

Afroz, Shaista; Naritani, Mio; Hosoki, H; Takechi, Kenshi; Okayama, Yoshihiro; Matsuka, Yoshizo

doi:10.11607/ofph.1924

Cited by 9 publications

(4 citation statements)

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“…Anterior disc displacement is the most frequent form of disc displacement, while posterior dislocation is the least prevalent [10]. In our study, posterior dislocation was observed in only 2.5% of patients [1 patient], which is consistent with the findings of Afroz et al's [19] meta-analysis study. The study reported an overall prevalence of posterior disc displacement [PDD] of 0.7% for the number of joints affected and 0.9% for the number of patients affected.…”

Section: Resultssupporting

confidence: 92%

Correlation of Static and Dynamic Magnetic Resonance Imaging Sequences in Evaluation of Temporomandibular Joint Dysfunction

Elnady,

Sonble,

Abd El-Salam

2024

International Journal of Medical Arts

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Article informationBackground: Temporo-mandibular joint dysfunction [TMD] is a common condition affecting many adults. To diagnose TMD, physicians commonly use traditional Magnetic Resonance Imaging [MRI] scans of the jaw in multiple fixed positions -both with the mouth closed and open. Nowadays, several fast pulse sequences have been proposed for dynamic MRI by some investigators. The Aim of the work: This study aims at evaluating the correlation between dynamic and static MRI sequences as diagnostic tools to diagnose temporomandibular joint dysfunction and their ability for diagnosis of the different types of displacement. Patients and Methods: A prospective study included 40 patients with TMD dysfunction. Static and dynamic MRI studies were compared for different pathological findings. Results: On comparing static and dynamic studies for various findings, for articular disc detection, dynamic MRI was good for detecting the disc in only 17 [42.5%] versus 30 [75%] by static MRI [P=0.038]. Regarding condylar translation, there was significant difference between the studied techniques as dynamic MRI identified 8 [20%] cases as hypermobile, 14 [35%] as hypomobile in contrast to 1 [2.5%] and 13 [32.5%] cases by static MRI [P=0.001]. Regarding condylar head detection, dynamic MRI was good for its detection in only 30 [75%] versus 37 [92.5%] by static MRI [P=0.012]. Conclusion:Using dynamic MRI, it is possible to observe the articular disc throughout the entire process of opening and closing the jaw, as well as the movements associated with internal derangement and the assessment of the relationship between the disc and the condyle. This method was faster than static MRI. However, there were some discrepancies between the two techniques, and dynamic sequences cannot replace static sequences when evaluating internal derangement disorders of the temporomandibular joint [TMJ], but can be used in conjunction with them.

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Section: Resultssupporting

confidence: 92%

Correlation of Static and Dynamic Magnetic Resonance Imaging Sequences in Evaluation of Temporomandibular Joint Dysfunction

Elnady,

Sonble,

Abd El-Salam

2024

International Journal of Medical Arts

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“…The frustration expressed over the persistence of symptoms like the clicking sound, despite treatment efforts, aligns with findings in the literature. For example, Afroz et al (2018), in a systematic review, noted that the multifactorial etiology of TMD makes it challenging to achieve consistent treatment outcomes [33]. This complexity often results in a trial-and-error approach, which can be disheartening for both practitioners and patients.…”

Section: Clinical Efficacy and Practitioner Challengesmentioning

confidence: 99%

Dental practitioners’ knowledge, management practices, and attitudes toward collaboration in the treatment of temporomandibular joint disorders: a mixed-methods study

Taqi,

Zaidi,

Siddiqui

et al. 2024

BMC Prim. Care

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Background Temporomandibular joint disorders (TMDs) are a variety of conditions that affect different parts of the temporomandibular joints (TMJ) and can cause orofacial pain and functional impairment. This study aims to investigate dental practitioners’ knowledge and management of Temporomandibular Joint Disorders (TMDs), particularly their knowledge of the role physical therapy plays in TMD treatment. Methods A mixed-methods approach was adopted to provide a comprehensive view of current knowledge, management practices, and attitudes toward collaboration among dental practitioners in treating TMD. Data were collected from a convenience sample of 335 dentists in Karachi using a detailed questionnaire to assess their knowledge of the role of physical therapy in the treatment of TMD. Twenty dentists were chosen for face-to-face, in-depth interviews to explore their experiences and challenges in managing TMDs based on their responses to the administered questionnaire. Results The cumulative quantitative and qualitative findings of the study revealed a landscape marked by individualized approaches to referral practices and significant gaps in interdisciplinary collaboration. Most practitioners holding a bachelor’s degree predominantly used medication (65.2%) and cause-specific treatment (65.3%) for TMD treatment. Thematic analysis of clinical efficacy and practitioner challenges in managing TMD revealed significant issues faced by dental professionals. Conclusions The study successfully validated a questionnaire to understand dental practitioners’ knowledge regarding physical therapy in TMD treatment. The study identified significant gaps in knowledge and a lack of collaboration between dentists and physiotherapists. The limited referral practices highlighted in the study, along with insights from dentist interviews, emphasize the need for improved interdisciplinary approaches to managing TMDs within dental practice.

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“…There is another type of disc displacement called posterior disc displacement (PDD). Although PDD is reported to be very rare [ 10 ], symptoms such as pain, clicking, and locking can still occur [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Relationship between Temporomandibular Joint Disc Displacement Distance and Disc Length: A Magnetic Resonance Imaging Analysis

Zhang

Zheng

et al. 2022

JCM

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Objective: to explore the association between the distance of disc displacement and disc morphology in patients with temporomandibular disorders (TMDs). Methods: a total of 717 joints in 473 subjects were enrolled in this cross-sectional study. The magnetic resonance imaging (MRI) of each patient was evaluated for temporomandibular joint (TMJ) disc morphology classification and position. The distance of the disc displacement and disc length were measured for smoothing spline prediction. A stratified analysis was performed based on the types of disc positions. The disc width and length-width ratio (L/W) were also measured. Descriptive statistics, one-way analysis of variance, smoothing spline analysis, threshold analysis, and two piecewise linear regression were performed to investigate the association between the displacement distance and length of discs. Results: the differences in displacement distance among morphological categories and among different disc positions were statistically significant. Nonlinear relationships were found between distance and length in all subjects. Two turning points of distance (−1.8 mm and 1.7 mm) were found, dividing the curve into three segments. Disc width and L/W were significantly different among discs in the three segments of the curve. The correlation coefficient (β) for the three segments were as follows: −0.6 [95% confidence interval (CI) = −0.9 to −0.3, p < 0.001], 0.0 (95% CI = −0.1 to 0.0, p = 0.027), and −0.7 (95% CI = −0.8 to −0.7, p < 0.001). Nonlinear relationships were also found between the distance and length in cases with anterior disc displacement (ADD), anterior disc displacement with reduction (ADDWR), and without reduction (ADDWoR). Conclusion: the turning points of the disc displacement distance may be considered as a potential reference value for high-risk disc deformation and ADD. Disc length decreases sharply with anterior disc displacement when the disc displacement distance is over 1.7 mm. Prospective and long-term studies are required to clarify the natural course of the disc at different stages of the regression curve.

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Prevalence of Posterior Disc Displacement of the Temporomandibular Joint in Patients with Temporomandibular Disorders: Systematic Review and Meta-Analyses

Abstract: This meta-analysis showed a very low prevalence rate of PDD in TMD patients. The limited literature did not allow conclusions to be drawn about the PDD-related features.

Cited by 9 publications

References 0 publications

Correlation of Static and Dynamic Magnetic Resonance Imaging Sequences in Evaluation of Temporomandibular Joint Dysfunction

Correlation of Static and Dynamic Magnetic Resonance Imaging Sequences in Evaluation of Temporomandibular Joint Dysfunction

Dental practitioners’ knowledge, management practices, and attitudes toward collaboration in the treatment of temporomandibular joint disorders: a mixed-methods study

Nonlinear Relationship between Temporomandibular Joint Disc Displacement Distance and Disc Length: A Magnetic Resonance Imaging Analysis

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