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1.
Artigo em Inglês | MEDLINE | ID: mdl-30709753

RESUMO

OBJECTIVE: Our previous study of patients with unilateral temporomandibular joint (TMJ) osteoarthritis (OA) showed that the affected joints had greater horizontal condylar angle (HCA) compared with the contralateral unaffected joints. However, it was unclear whether the HCA changes preceded or were the result of OA changes. The aim of this longitudinal study was to investigate the relationship between HCA and OA progression. STUDY DESIGN: In total, 127 patients (with or without TMJ disorders) completed baseline and follow-up examinations (average time to follow-up 7.9 years). Generalized estimating equation models were used to account for correlation of observations within the same patients. RESULTS: (1) HCA was greater in OA-affected joints than in unaffected joints (P = .04). (2) Increased HCA at follow-up was associated with change in joint status from no OA to OA. (P = .001). (3) Baseline HCA value alone did not predict future OA diagnosis. (4) All OA changes in fossa/articular eminence morphology, and some combinations of condylar changes, were associated with a greater HCA. (5) OA diagnosis was associated with pain during maximum opening (P = .005) and pain history (P = .002). (6) Aging alone was not correlated with increased HCA. CONCLUSIONS: Clinical progression of OA preceded increases in HCA. HCA alone did not predict OA development.


Assuntos
Côndilo Mandibular , Osteoartrite , Transtornos da Articulação Temporomandibular , Progressão da Doença , Humanos , Estudos Longitudinais , Côndilo Mandibular/anatomia & histologia , Articulação Temporomandibular
2.
Artigo em Inglês | MEDLINE | ID: mdl-28189528

RESUMO

BACKGROUND: Research using magnetic resonance imaging analysis has shown that internal temporomandibular joint derangement is associated with significantly greater horizontal condylar angle. However, the association between osteoarthritic (OA) bony changes as shown on computed tomography and horizontal condylar angle has never been evaluated. OBJECTIVE: To investigate the relationship between mandibular condylar angle and OA degenerative changes. STUDY DESIGN: This is a retrospective study using cone beam computed tomography images and reports from 60 patients with unilateral OA degenerative changes and 43 control patients with no OA-affected joints. RESULTS: Condylar angles in the joints of control patients and the unaffected joints in OA patients were not significantly different. The mean horizontal condylar angle in the unilaterally OA-affected joints (29.5° ± 10.5°) was larger than in the contralateral unaffected joints (22.5° ± 7.7°) (P < .001). In the OA-affected joints, flattening and erosion of the articular eminence was associated with a greater condylar angle (P < .05). CONCLUSIONS: Moderate to severe degenerative temporomandibular joint change is associated with greater horizontal condylar angle.


Assuntos
Côndilo Mandibular/patologia , Osteoartrite/patologia , Transtornos da Articulação Temporomandibular/patologia , Estudos de Casos e Controles , Tomografia Computadorizada de Feixe Cônico , Feminino , Humanos , Masculino , Côndilo Mandibular/diagnóstico por imagem , Pessoa de Meia-Idade , Osteoartrite/diagnóstico por imagem , Estudos Retrospectivos , Fatores de Risco , Transtornos da Articulação Temporomandibular/diagnóstico por imagem
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