Full text
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| Author(s): |
Carolina Ortigosa Cunha
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Bauru. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Odontologia de Bauru (FOB/SDB) |
| Defense date: | 2011-04-25 |
| Examining board members: |
Paulo Cesar Rodrigues Conti;
Carlos dos Reis Pereira de Araujo;
Rafael dos Santos Silva
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| Advisor: | Paulo Cesar Rodrigues Conti |
| Abstract | |
Temporomandibular Joint (TMJ) internal derangements are characterized by anterior disk displacement (ADD) and/or as arthralgias. An important clinical presentation in these cases is the painful tenderness to manual palpation or decreased Pressure Pain Threshold (PPT), determined with an algometer. The present study aims to determine, based on high specificity levels, the more appropriate PPT value to discriminate healthy TMJs from those with painful inflammatory processes as well as to determine the influence of asymptomatic disk displacement with reduction (DDWR) in this scenario. A sample of 60 individuals from both genders with age between 18 and 50 years were evaluated by Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) and divided into three groups: 20 patients with clinical diagnosis of TMJ arthralgia, 20 patients with clinical diagnosis of asymptomatic DDWR and 20 individuals with no TMJ pain or noise (control group). All individuals were submitted to an exam of magnetic resonance imaging for the analysis of disk position to confirm the physical exam (RDC/TMD) and to validate the group distribution. An algometry exam was performed on the TMJ lateral pole and the individuals of the arthralgia group also filled out a Visual Analogue Scale (VAS). The data were analyzed by variance test (ANOVA) and by Pearson correlation test with 5% of significance. Levels of specificity and sensibility, and ROC curves were also determined. The arthralgia group presented significant lower PPT (mean of 1.07 kgf/cm2 ± 0.445) values than the others. DDWR group (mean of 1.90 kgf/cm2 ± 0.647) has shown significant lower PPT values when compared to the control group (mean of 2.46 kgf/cm2 ± 0.593). A significant correlation between the PPT and the VAS and the time of pain experience was not found. 100% of specificity and 90% of sensitivity were obtained when 1.56 kgf/cm2 was applied to the TMJ (ROC=0.99). This value was considered to be the most appropriate to detected TMJ arthralgia. (AU) | |
| FAPESP's process: | 09/03832-1 - Determination of the proper Pressure Pain Threshold (PPT) for the diagnosis of Temporomandibular Joint (TMJ) arthralgia: a magnetic ressonance and algometer - based study |
| Grantee: | Carolina Ortigosa Cunha |
| Support Opportunities: | Scholarships in Brazil - Master |