SciELO - Scientific Electronic Library Online

 
vol.64 issue2Malocclusion in schoolhildren aged 7-12 years old in Minas Gerais, BrazilApproaches adopted by dentists for management of occlusal caries in primary teeth author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


RGO - Revista Gaúcha de Odontologia

Print version ISSN 0103-6971On-line version ISSN 1981-8637

Abstract

AZEVEDO, Marcella Quirino de ALMEIDA et al. Degenerative bone changes in TMJ assessed by cone beam computed tomography. RGO, Rev. Gaúch. Odontol. [online]. 2016, vol.64, n.2, pp.171-178. ISSN 1981-8637.  https://doi.org/10.1590/1981-863720160002000073191.

Objective

To assess the degenerative bone changes of the jaw head and the condylar mobility regarding gender and age.

Methods

The sample was composed of 106 CBCT images for TMJ region from patients over 18 years old, from both genders, from the archives of a radiological clinic in the city of Campina Grande, Paraíba, Brazil. The images were obtained from patients in maximum intercuspal and maximum mouth opening. The images were examined by a radiologist, through the software Xoran CAT(r), using a monitor with high resolution of and maximum color quality (12 bits) in a low light environment. It was assessed tomographic aspects of bone degenerative changes (flattening, erosion, osteophytes, bone sclerosis and pseudocyst) of both TMJ of each patient. The association among the degenerative changes of the jaw head, gender and age were investigated through Fisher's exact test, G-test and chi-squared test. The data obtained regarding condylar mobility (normo, hyper and hypoexcursion), location (right unilateral, left unilateral and bilateral) were also submitted to descriptive analysis in terms of absolute and relative frequency.

Results

The most frequent bone alteration was flattening (58.5%), followed by osteophytes (44.3%), erosion (22.6%), sclerosis (13.2%) and pseudocyst (10.4%). Regarding condylar mobility it was observed that normoexcursion (71.7%) was more prevalent.

Conclusion

The degenerative bone changes occurred more frequently among women and in bilateral location and there was an increasing of alterations according the age. It was not found correlation among condylar mobility and the presence of degenerative bone alterations of the TMJ.

Keywords : Temporomandibular joint; Cone-Beam Computed Tomography; Osteoarthritis..

        · abstract in Portuguese     · text in English     · English ( pdf )