leandro kfouri martins cerqueira análise ... - (DDI) - UNIFESP

Abstract
Purpose: To investigate the mandibular asymmetry cause of an individual with Class II
subdivision malocclusion, through a cephalometric analysis made on frontal digital
teleradiography. The aim was also to provide, through the results of cephalometric
analysis, subsidies to the professionals to a better diagnosis and treatment plan of
patients with Class II subdivision malocclusion. Methods: The sample consisted of 30
individuals presenting Class II subdivision malocclusion. Frontal digital
teleradiographies were performed and five main points were demarcated (17 - center
point on top of the head of left condyle, 28 - center point on top of the head of right
condyle, 23 - the deepest point in the right antegonial notch, 21 - deepest point on the
left antegonial notch, and 22 - lower point in the mandibular symphysis). Sixteen
secondary points were used in the cephalometric analysis. A digital system (Radiocef ®
4.9) was used to point assessment, which determined the lines, plans and measures
necessary to verify the origin of mandibular asymmetry present in an individual with a
Class II subdivision malocclusion. Results: The results showed that there is a greater
tendency of mandibular asymmetry of dental cause in malocclusion subdivision Class II
conditions, however the orthodontist should give special attention to the sides of the
base of the mandible, since the results found in this cephalometric study showed a
greater linear difference comparing one against another attempting to a possible
skeletal cause of mandibular asymmetry. Conclusions: The cephalometric analysis
used in this study confirmed the clinical need for diagnosis and orthodontic treatment
plan for individuals with Class II subdivision malocclusion, it is a simplified method that
induces the professional to use complementary tests (clinical and photographic
examination, analysis of models and CT) in cases where the cephalometric results
showed a trend of a mandibular asymmetry of skeletal cause, since in most cases of
malocclusion division Class II the individual is treated as if the mandibular asymmetry
was always of dental cause.