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Análise do percurso eruptivo dos caninos permanentes em radiografias panorâmicas
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Authors
Advisor(s)
Abstract(s)
Objetivos: Este estudo tem como principal objetivo determinar se a extração do canino
decíduo altera a erupção e a posição do canino permanente e qual o ângulo eruptivo que
o canino tem, de acordo com a idade cronológica do paciente, aquando do ocorrer da
erupção.
Materiais e métodos: O estudo consistiu de uma análise de radiografias panorâmicas
de 40 pacientes, 5 com extração profilática unilateral do canino decíduo e 35 sem
extração, em dois momentos de avaliação. Analisou-se um total de 80 radiografias com
um intervalo de 1 a 3 anos entre a primeira e a segunda radiografia de cada paciente.
Resultados: A amostra é constituída por 40 crianças, 52,5% do género feminino e
47,5% do género masculino. Observou-se a erupção de 61,3% e a impactação unilateral
de 3,8% dos caninos, os restantes apenas alteraram de posição. Os retidos apresentavam
ângulos de 25,5º a 40,5º com distâncias de 17 a 22 mm. Os erupcionados apresentavam
ângulos de 1º a 33º com distâncias de 4 a 31 mm. Não houve associação entre a
extração do canino decíduo e a alteração da posição do canino permanente (p=1.000)
nem na erupção (p=0,37).
Conclusão: A previsão da erupção ou da impactação do canino permanente baseado nas
medidas da radiografia panorâmica não foi um bom preditor. Embora, quanto maior a
angulação e a distância, maior a probabilidade de impactação futura. A extração do
canino decíduo não influenciou a erupção do canino permanente. Não se conseguiu
prever a retenção ou erupção dos caninos de acordo com a angulação e a idade
cronológica.
Objectives: In this study, we aimed to determine if extraction of the deciduous canine alters the eruption and position of the permanent canine and the eruptive angle that the canine has, according to the chronological age of the patient, when the eruption occurs. Materials and methods: The study consisted of an analysis of panoramic radiographs of 40 patients, 5 with unilateral prophylactic extraction of the deciduous canine and 35 without extraction, at two moments of evaluation. A total of 80 radiographs were analyzed with an interval of 1 to 3 years between the first and second one of each patient. Results: The sample consisted of 40 children, 52,5% female and 47,5% male. The eruption of 61,3% and the unilateral impaction of 3,8% of the canines were observed, the others only changed position. The retained ones had angles of 25,5º to 40,5º with distances of 17 to 22 mm. The erupted had angles of 1º to 33º with distances of 4 to 31 mm. There was no association between extraction of the deciduous canine and alteration of the position of the permanent canine (p = 1,000) nor in the eruption (p = 0.37). Conclusion: Prediction of permanent canine eruption or impaction based on panoramic radiographic measurements was not a good predictor. Although, the greater the angulation and the distance, the greater the probability of future impaction. The extraction of the deciduous canine did not influence the eruption of the permanent canine. It wasn´t able to predict retention or eruption of the canines according to angulation and chronological age.
Objectives: In this study, we aimed to determine if extraction of the deciduous canine alters the eruption and position of the permanent canine and the eruptive angle that the canine has, according to the chronological age of the patient, when the eruption occurs. Materials and methods: The study consisted of an analysis of panoramic radiographs of 40 patients, 5 with unilateral prophylactic extraction of the deciduous canine and 35 without extraction, at two moments of evaluation. A total of 80 radiographs were analyzed with an interval of 1 to 3 years between the first and second one of each patient. Results: The sample consisted of 40 children, 52,5% female and 47,5% male. The eruption of 61,3% and the unilateral impaction of 3,8% of the canines were observed, the others only changed position. The retained ones had angles of 25,5º to 40,5º with distances of 17 to 22 mm. The erupted had angles of 1º to 33º with distances of 4 to 31 mm. There was no association between extraction of the deciduous canine and alteration of the position of the permanent canine (p = 1,000) nor in the eruption (p = 0.37). Conclusion: Prediction of permanent canine eruption or impaction based on panoramic radiographic measurements was not a good predictor. Although, the greater the angulation and the distance, the greater the probability of future impaction. The extraction of the deciduous canine did not influence the eruption of the permanent canine. It wasn´t able to predict retention or eruption of the canines according to angulation and chronological age.
Description
Keywords
Impactação canina Canino maxilar Extração do canino decíduo Radiografia panorâmica Canine impaction Maxillary canine Extraction of the deciduous canine Panoramic radiography