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

Israa Hussein Ali,Lamis Khidher Mohammed,Bassam Ali Al-Turaihi,Mohammad Khursheed Alam,Vincenzo Iorio Siciliano

doi:10.1155/2021/6635575

Israa Hussein Ali, Lamis Khidher Mohammed + Show 3 more

Open Access

https://doi.org/10.1155/2021/6635575

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Abstract

Objectives The aim of this retrospective study was to determine the position of the impacted maxillary canine (IMC) and then to inspect the frequency, location, and extent of the consequent root resorption (RR) of the adjacent teeth by using CBCT. Materials and Methods Forty-one patients aged 12-68 who have 56 IMC detected on CBCT images were retrospectively examined in 3D. The canine position was determined by assessing the side of impaction, buccopalatal location, the distance of the canine cusp tip to the midline and to the occlusal plane, and canine angulation to the midline. RR of adjacent teeth was analyzed by investigating the nearest location of ectopic canine to adjacent teeth in horizontal and vertical dimensions in addition to measuring the degree of RR. Results Twenty-seven (48.2%) impacted canines were on the right side, and 29 (51.8%) were on the left. Most of these teeth 31 (55.4%) were located palatally, while buccal impaction was seen in only 13 (23.2%) canines and 12 (21.4%) were located centrally. The mean distance of the ectopic canine cusp tip to the occlusal plane was significantly higher in males (14.4 mm) than in females (10.7 mm). RR was seen in 9 central incisors (31.03%) and 21 lateral incisors (41.17%) as well as one case in the first and second premolar. This RR was slight for all the adjacent central incisors and premolars. Conclusions IMC is more frequent in females, palatally and apically. When left untreated, it may cause RR of some of the adjacent teeth with various degrees, however, with no gender preference.

Highlights

Permanent tooth impaction usually results from failure of the tooth to emerge into its normal position in the dental arch within the usual period of growth [1,2,3]
A diverge variation is present in reporting RR of teeth adjacent to impacted maxillary canine (IMC) [9] ranging from 12.5% [10] in a study that used intraoral radiographs to 66.7% in a three-dimensional CBCT study [11]
The CBCT images were assessed in all 3D on a flat screen monitor by Impacted maxillary canines

Summary

Introduction

Permanent tooth impaction usually results from failure of the tooth to emerge into its normal position in the dental arch within the usual period of growth [1,2,3]. Maxillary canine (MC) is the second most common tooth to be impacted following third molars [2, 4, 5]. The most frequent complication correlated to IMC is RR of the nearby lateral incisor [3, 6, 8]. Even when the pulp is exposed, this complication remains asymptomatic, resulting in delaying its diagnosis until clinically evident which may require extraction of the affected tooth [6]. A diverge variation is present in reporting RR of teeth adjacent to IMC [9] ranging from 12.5% [10] in a study that used intraoral radiographs to 66.7% in a three-dimensional CBCT study [11]

Objectives

Methods

Conclusion