Prevalence and risk factors of root resorption of adjacent teeth in maxillary canine impaction, among untreated children and adolescents

Abstract

Summary Objectives The aim of this retrospective study was to assess in maxillary canine impaction cases both the prevalence of root resorption of adjacent teeth among untreated children and adolescents, and its associated risk factors. Subjects and methods Sixty subjects (mean age 12.2 years; SD 1.9; range 8–17 years) with 83 displaced maxillary canines and without any past or ongoing orthodontic treatment were included in this study. The presence of root resorption was evaluated on images from a single cone beam computed tomography (CBCT) unit. Potential risk factors were measured on the CBCT images and on panoramic reconstructions of the 3D data sets. The sample was characterized by descriptive statistics and multiple logistic regressions were performed to predict root resorption. Results Root resorption of at least one adjacent tooth was detected in 67.5 per cent of the affected quadrants. It was found that 55.7 per cent of the lateral incisors, 8.4 per cent of the central incisors, and 19.5 per cent of first premolars were resorbed. Of the detected resorptions, 71.7 per cent were considered slight, 14.9 per cent moderate, and 13.4 per cent severe. Contact between the displaced canine(s) and the adjacent teeth roots was the only identified statistically significant risk factor, all teeth being considered (odds ratio [OR] = 18.7, 95% confidence interval: 2.26–756, P < 0.01). An enlarged canine dental follicle, a peg upper lateral, or an upper lateral agenesis were not significantly associated with root resorption of adjacent teeth, nor were age nor gender. Conclusions Root resorption of adjacent teeth was detected in more than two-thirds of a sample of sixty untreated children and adolescents.

Root Resorption of Teeth Adjacent to Untreated Impacted Maxillary Canines: A CBCT Study

“…The orthodontist and a pediatric dentist interrater agreement was consistent with the reliability reported previously [2,22,25]. Although the interrater reliability was high in our study, more studies are required to assess whether the diagnostic parameters can be refined to achieve a higher reliability score.…”

“…Such difference could be caused by variation in the groups studied. Regarding canine angulation to the midline, the mean value for this variable was found to be 35.9°which was similar to an earlier study, [22] but higher than the other two [17,25].…”

“…Another possible reason could be that females may pursue orthodontic treatment more frequently than males [ 2 , 17 ]. For the side of impaction, bilateral cases represent 36.6% of the collected sample which was identical to a previous study [ 22 ].…”

Orthodontic management of impacted maxillary canines

“…[42] In a CBCT study, where all patients 8-17 years of age (mean 12.2 years) whowere referred to a department of dental radiology because of impacted maxillary canines, during a 6-year period, root resorption on at least one adjacent tooth was detected in 67.5%. [43] e treatment plans without 3D radiograph information were changed in 35 (43.7%) of the 80 children after obtaining information in the 3D investigation. Even severe root resorptions were often difficult to detect on intraoral and panoramic radiographs.…”

Management of maxillary impacted canines: A prospective study of orthodontists' preferences

“…These aberrations are more frequent in maxillary canines causing pressure on the root of erupted maxillary lateral incisors. Rafflenbeul detected root resorption of adjacent teeth using cone beam computed tomography (CBCT) in more than two thirds of a sample of 60 untreated children and adolescents who were diagnosed with maxillary impacted canines ( Rafflenbeul et al, 2019 ). Another study has evaluated resorption of incisors after ectopic eruption of maxillary canines using CBCT.…”