Prediction of maxillary canine impaction based on panoramic radiographs

Abstract

Objectives The objective of this article is to establish a large sample‐based prediction model for maxillary canine impaction based on linear and angular measurements on panoramic radiographs and to validate this model. Materials and methods All patients with at least two panoramic radiographs taken between the ages of 7 and 14 years with an interval of minimum 1 year and maximum 3 years (T1 and T2) were selected from the Department of Oral Health Sciences, University Hospital Leuven database. Linear and angular measurements were performed at T1. From 2361 records, 572 patients with unilateral or bilateral canine impaction were selected at T1. Of those, 306 patients were still untreated at T2 and were used as study sample. To construct the prediction model, logistic regression analysis was used. Results The parameters analyzed through backward selection procedure were canine to midline angle, canine to first premolar angle, canine cusp to midline distance, canine cusp to maxillary plane distance, sector, quadratic trends for continuous predictors, and all pairwise interactions. The final model was applied to calculate the likelihood of impaction and yielded an area under the curve equal to 0.783 (95% CI [0.742–0.823]). The cut‐off point was fixed on 0.342 with a sensitivity of 0.800 and a specificity of 0.598. The cross‐validated area under the curve was equal to 0.750 (95% CI [0.700, 0.799]). Conclusion The prediction model based on the above mentioned parameters measured on panoramic radiographs is a valuable tool to decide between early intervention and regular follow‐up of impacted canines.

Misdiagnosis and Mismanagement of an Infectious Impacted Canine: A Case Presentation

“…The position of adjacent teeth, the amount of space in the dental arch, bone contours, and the mobility of teeth should be assessed carefully during physical examination (7). Panoramic, lateral, occlusal, and periapical are helpful radiographic views to identify the impacted canine (10).…”

Impactação e inversão de caninos superiores permanentes: importância para a identificação humana / Impaction and inversion of permanent maxillary canines: importance for human identification

“…No entanto, não há evidências que expliquem essa preferência. Algumas pesquisas mostram maior ocorrência de unilateralidade nos casos de caninos impactados (KAMILOGLU & KELAHMET, 2014;ALYAMI et al, 2020), enquanto outros apontam frequência maior da forma bilateral (MARGOT et al, 2020), como o observado no caso do CEAF/FOP/UPE.…”

Tratamiento interceptivo de los caninos impactados. Revisión de literatura.

“…También se observa el ángulo alfa que corresponde al ángulo formado entre una línea que atraviesa el eje largo del canino permanente y la línea media siendo la norma de 25%, mientras mayor sea el ángulo el canino permanente tendrá peor pronóstico de realizar el proceso de erupción (Sharma et al, 2021; Shehare, Namrata; Tarvade, Suchita; Kaurani, s. f.). En un estudio publicado por Malik et al, en el año 2019 mencionan que los caninos impactados palatinamente van a estar ubicados entre los sectores 3 y 4 y aquellos con una erupción normal están en los sectores 0 y 1, Margot en su estudio revela que la radiografía panorámica es muy valiosa para el diagnóstico temprano de caninos impactados (Margot et al, 2020). Björksved et al, estudiaron la confiabilidad en la valoración de las radiografías panorámicas versus el CBCT, se encontró que en las radiografías panorámicas, la posición del canino impactado palatinamente y el ángulo con la línea media, tuvieron valores más altos en relación al CBCT, pero clínicamente las diferencias no son significativas (Björksved et al, 2019).…”