Avaliação radiográfica da posição e inclinação do canino superior permanente adjacente ao defeito ósseo alveolar em portadores de fissura labiopalatina unilateral completa / Radiographic evaluation of the permanent maxillary canine position and inclination on the cleft side in patients with complete unilateral cleft lip and palate

AUTOR(ES)

Flávia Pecora Carneiro de Faria

DATA DE PUBLICAÇÃO

2009

RESUMO

The clefts lip and palate rehabilitation involves the secondary bone grafting procedure that aims to provide bony continuity in the alveolar process of maxilla. The radiographic evaluation of the teeth adjacent to the cleft site is an important diagnostic resource for the orthodontic and/or surgical planning. The purpose of this study was to analyze the permanent maxillary canine position and inclination, on the cleft side, in patients with complete unilateral cleft lip and palate, employing panoramic radiographs. An hundred and two radiographs were used, in which fiftytwo were of patients with cleft lip and palate (study group) and fifty were of noncleft patients (control group); both groups were between 9 to 11 years of age. After the anatomic draws, the angle formed by the canine long axis, relative to the bi-orbital plane, in the cleft and noncleft sides, in the study group, and in the right and left sides, in the control group, was measured. The canine position, adjacent to the alveolar defect, was considered mesial or distal according to the canine mesial cement-enamel junction projection relative to a predetermined point at the cleft. The results showed that the cleft side canines presented mean angulation value lower (69,20°) than the noncleft side canines (79,21°), and these didnt show statistically differences in relation to the control group canines (78,61°). It was observed that the mesial or distal canine position was associated, respectively, with an absence or presence of the neighboring permanent tooth, mesial to the canine, in the cleft side. The cleft side canines, when in mesial position, showed mean angulation value significantly lower (65,21°) than the distal located canines (77,41°). This study allowed us to conclude that the cleft side canine present: more horizontal inclination than your contralateral, which fits in the general population pattern; distal position associated with the presence of a permanent lateral incisive or a supernumerary tooth in the cleft side and the association of a more vertical inclination and distal position.

ASSUNTO(S)

posição inclinação fissura labiopalatina panoramic radiograph cleft lip and palate position radiografia panorâmica maxillary canine inclination canino superior permanente

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