A Tomographic Study of the Mandibular Condyle Position in Partially Edentulous Population

Ammanna, Susan; Rodrigues, Anisha; Shetty, Neeta; Shetty, Karunakar

doi:10.5005/jp-journals-10024-1637

Cited by 8 publications

(8 citation statements)

References 18 publications

(28 reference statements)

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“…Such reductions caused overload on the condyle or articular disc and had adverse effects on biomechanical loading-related TMs. 60,61…”

Section: Discussionmentioning

confidence: 99%

“…Such reductions caused overload on the condyle or articular disc and had adverse effects on biomechanical loading-related TMs. 60,61 In experiments on chewing patterns, chronic unilateral chewing was more often significantly associated with TMDs than other chewing patterns. 27 Based on the findings of TMJ condylar path among participants having TMDs, Santana-Mora et al 29 suggested that a new term, 'habitual chewing side syndrome', should be added to TMD diagnosis.…”

Section: Total Loss Of Unilateral Occlusal Support Seems To Be An Aet...mentioning

confidence: 99%

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The impact of occlusal support on temporomandibular disorders: a literature review

Nguyen

Saag

Jagomägi

et al. 2021

Proceedings of Singapore Healthcare

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Temporomandibular disorders are a multifactorial disease. Occlusal support and the number of teeth in dentition have significant effects on the masticatory system. The current study aims to review the role of occlusal support in association with findings of temporomandibular disorders. Data sources were PubMed, Web of Science and Google Scholar, with 1411 citations published over the period 1992–2019. The selection criteria stipulated that articles must have reported the association between the number of teeth, occlusal unit, occlusal support and temporomandibular disorders. A total of 15 full-text articles was finally accessed for eligibility in the current review. The studies on temporomandibular disorders were collected from various sources, including articles reporting temporomandibular disorder symptoms ( n=1), temporomandibular disorder signs ( n=5), temporomandibular joint osseous changes ( n=1), temporomandibular joint dysfunction using the Helkimo index ( n=2), and temporomandibular disorder classification ( n=6). Of these articles, significant associations were found between: the number of missing teeth and temporomandibular disorders ( n=5); the number of occlusal units and occlusal supports and temporomandibular disorders ( n=3); the position of the lost occlusal units and temporomandibular disorders ( n=1). Loss of the occlusal unit has more impact on temporomandibular disorders than the loss of posterior teeth. The total loss of unilateral occlusal support seems to be an aetiological factor for temporomandibular disorders, and maintenance of balanced posterior occlusal support has a role in the prevention and management of temporomandibular disorders.

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“…Such reductions caused overload on the condyle or articular disc and had adverse effects on biomechanical loading-related TMs. 60,61…”

Section: Discussionmentioning

confidence: 99%

Section: Total Loss Of Unilateral Occlusal Support Seems To Be An Aet...mentioning

confidence: 99%

The impact of occlusal support on temporomandibular disorders: a literature review

Nguyen

Saag

Jagomägi

et al. 2021

Proceedings of Singapore Healthcare

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“…The clinical importance of joint space holds considerable significance since the existence of a proper joint space is essential for facilitating unrestricted movement of the condyle in conjunction with the articular disc (Mallya, 2019 ). Changes in condylar position over time can lead to structural modifications of the TMJ surfaces, triggering symptoms of temporomandibular joint disorders (TMD), such as discomfort and dysfunction (Ammanna, 2009 ).…”

Section: Introductionmentioning

confidence: 99%

The effect of tooth loss on the temporomandibular joint space: A CBCT study

Tabatabaei,

Paknahad,

Poostforoosh

2024

Clinical & Exp Dental Res

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ObjectiveThe tooth loss has a significant impact on the positioning of the condyle in the glenoid fossa and joint spaces of the temporomandibular joint (TMJ). The aim of this study was to assess the association between tooth loss and TMJ spaces using cone beam computed tomography (CBCT) images.Materials and MethodsThis retrospective investigation involved the evaluation of CBCT images of the bilateral TMJs in a cohort of 111 individuals, comprising 68 males and 43 women. The dentition of the patients was categorized into three categories, including A (65.4%), B (19.1%), and C (16.4%), based on the Eichner index. Anterior, superior, and posterior joint spaces were then measured in sagittal views. The Kruskal–Wallis test and Mann–Whitney test were employed to identify significant differences among the three Eichner groups.ResultsThe findings of the present study suggested that there was no statistically significant variation in the anterior joint space among different Eichner groups within the general population (p = .781). Nevertheless, the superior and posterior joint spaces exhibited statistically significant alterations, as indicated by p‐values of .039 and .010, respectively. It was detected that condyles were positioned inferiorly and posteriorly in group C when compared to groups A and B.ConclusionThe present study indicated that greater loss of tooth‐supporting zones is associated with posterior and inferior displacement of condyles. Understanding these relationships helps emphasize how crucial it is to replace missing teeth to enhance occlusion support and, in turn, stop the progression and further deterioration of temporomandibular disorders.

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“…The loss of teeth over the years leads to the morphological remodulation of all the stomatognathic systems, especially the condyle and its adjacent structures 1,2 . Therefore, during the rehabilitation of an edentulous patient, it is fundamental to reestablish a stable jaw position so that muscle and joint balance is achieved, providing better performance, comfort for the individual, and longevity of the rehabilitation 3–5 …”

mentioning

confidence: 99%

“…1,2 Therefore, during the rehabilitation of an edentulous patient, it is fundamental to reestablish a stable jaw position so that muscle and joint balance is achieved, providing better performance, comfort for the individual, and longevity of the rehabilitation. [3][4][5] The most suitable maxillomandibular position for the rehabilitation of edentulous patients is the centric relation (CR), which is considered a usable and repeatable reference position. 6 In CR, the condyles articulate in the anterosuperior position against the posterior slope of the articular eminences, where they make only rotative movements.…”

mentioning

confidence: 99%

Clinical reproducibility of different centric relation recording techniques in edentulous individuals: An observational cross‐sectional study

Ervolino

Goiato

Neto

et al. 2023

Journal of Prosthodontics

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To assess the reproducibility of four different centric relation (CR) recording techniques, and time spent performing each technique in edentulous individuals. Materials and methods: Four techniques were assessed: extraoral gothic arch (EOGA) tracing, intraoral gothic arch (IOGA) tracing, deglutition (D), and frontal manipulation with tongue elevation (FMTE). Twelve subjects participated in the study; four technique records were performed on each volunteer by the same operator. Each record was repeated three times, in the same period of the day, with a 30 min interval between each technique. The reproducibility of each technique was assessed by the tri-dimensional displacement of the position of the condylar housing (mandible condyle) to the wall of the condylar guide (glenoid cavity) in the semi-adjustable articulator (anteroposterior, mediolateral, and superior-inferior). The time spent on each technique was timed in seconds (from the beginning of each technique until the wax occlusion fixation). The analysis of variance (ANOVA) and the Tukey test were performed for anteroposterior displacement (two-way) and for time spent on CT recording techniques (one-way) (α < 0.05). Regarding mediolateral and superior-inferior displacements, the nonparametric Kruskal-Wallis was performed for the comparison between recording methods, whereas the Mann-Whitney test was performed for the comparison between sides (α < 0.05). Results:The factor recording technique interfered with the anteroposterior displacement (ANOVA: α < 0.001; F = 11.396). The technique D (right side: 3.78 ± 0.69 mm; left side: 3.45 ± 0.74 mm) showed a statistically significant difference compared to the other techniques (EOGA: right side: 3.00 ± 0.00 mm; left side: 3.00 ± 0.00 mm; FMTE: right side: 2.81 ± 0.52 mm; left side: 2.82 ± 0.79 mm; IOGA: right side: 2.90 ± 0.65 mm; left side: 3.12 ± 0.44 mm). The time spent on the recording technique influenced the results (ANOVA: α < 0.001; F = 21.118). The IOGA (340.40 ± 163.41 s) and EOGA (285.93 ± 133.84 s) required more time compared to the D (86.00 ± 34.33 s) and FMTE (101.33 ± 36.72 s) techniques. Conclusion: Graphic recordings showed better reproducibility and accuracy of the position of the centric relation.

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A Tomographic Study of the Mandibular Condyle Position in Partially Edentulous Population

Cited by 8 publications

References 18 publications

The impact of occlusal support on temporomandibular disorders: a literature review

The impact of occlusal support on temporomandibular disorders: a literature review

The effect of tooth loss on the temporomandibular joint space: A CBCT study

Clinical reproducibility of different centric relation recording techniques in edentulous individuals: An observational cross‐sectional study

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