Study of Occlusal Features in Long Face Pattern Patients Indicated to Surgical-Orthodontic Treatment

Mauricio de Almeida CARDOSO, Francisco Antonio BERTOZ, Sílvia Augusta Braga REIS, Leopoldino CAPELOZZA FILHO

The present study aimed to evaluate the sagital, vertical and transversal characteristics of the occlusion from a sample of 38 Brazilians, male and female, aging from 15 to 38 years old, with long face pattern and indicated to surgical-orthodontic treatment. The assessment of the sagital relationship of bicuspids in the casts allowed to observe the absence of normal occlusion in these individuals. The malocclusion prevalence found was 13,2% for Class I, 71% for Class II, division 1 and 15,8% for Class III. In females, the prevalence observed was 0% for Class I, 87% for Class II, division 1 and 13% for Class III. In males, it was found 33,3% for Class I, 46,7% for Class II, division 1 and 20% for Class III. The average of overjet was 5,22mm ± 3,81mm, ranging from –4mm to 17mm. The overjet was statistically greater in females. The average and the standard deviation of the overbite was 0,29mm ± 3,15mm, ranging from –9mm to 7mm. There was not statistically difference between the genders. There was not correlation between overjet or overbite and the age. The posterior crossbite was observed in 34,2% of the sample, and it was present in all Class III individuals, absent in Class I patients and it was found in 26% of Class II, division 1 patients. There were a variability in the occlusal relationship of the evaluated patients with similar skeletal patterns, which demand surgical procedures with similar protocol for its correction. This proves the inappropriateness of the molar relationship as the tool for sagital classification, demanding the use of skeletal relationship for this propose.

Keywords: Long Face Pattern. Dental Occlusion. Classification. Malocclusion. Prevalence.

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