Skeletal and Dental Morphological Characteristics of the Maxillary in Patients with Impacted Canines Using Cone Beam Computed Tomography: A Retrospective Clinical Study.

María Elena Montes-Díaz,Nuria Esther Gallardo-López,Alicia Martínez-González,Riánsares Arriazu-Navarro,Alfonso Alvarado-Lorenzo,Ricardo Ortega-Aranegui

doi:10.3390/jpm12010096

María Elena Montes-Díaz, Nuria Esther Gallardo-López + Show 4 more

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https://doi.org/10.3390/jpm12010096

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Abstract

The aim of this study is to analyze the skeletal and dentoalveolar morphological characteristics of the maxillary in subjects with a unilateral palatally impacted canine using Cone Beam Computed Tomography (CBCT). A retrospective clinical study was conducted of 100 adult patients divided into two groups: one consisting of patients with a unilaterally palatally impacted maxillary canine (GI), with the subgroups in the right and left hemiarches (GI-R and GI-L), and the second, without impacted canine, as the control group (CG). The CBCT measured skeletal variables (maxillary basal width and alveolar crest height) and dentoalveolar variables (inclination of the upper incisor, tooth lengths of incisors and canines, arch length, tooth size and bone dental discrepancy). In skeletal variables, statistically significant differences were found in alveolar crest height (ACH) in all groups and subgroups (p < 0.01). In the dentoalveolar variables, there were differences in the angle of the upper incisor (II) and lateral incisor length (LLIL) between the GI and GC and the angle of the upper incisor (II′), arch length (AL′) and arch length-tooth size discrepancy (ATD′) among the GI subgroups (p < 0.01). There are skeletal and dentoalveolar differences in patients with unilateral palatally impacted maxillary canines, with lower angular and linear measurements compared with patients without impaction.

Highlights

Introduction published maps and institutional affilTooth eruption is the vertical movement from the intra-alveolar non-functional position to the functional line of occlusion [1]
The data that reached the Measurements were performed by a single operator
The data that reached the statististatistical operator were kept anonymous by means of a numerical code

Summary

Introduction

Introduction published maps and institutional affilTooth eruption is the vertical movement from the intra-alveolar non-functional position to the functional line of occlusion [1]. Coulter and Richardson observed a distance traveled from formation to eruption of 22 mm [7]. It is considered impacted when it is completely or partially covered by mucoperiosteum and bone, distant from the place and time that corresponds to it in the mouth [8,9]. The canine is the tooth that most frequently presents anomalies in its eruption [5,9,10], with a prevalence of 1–3% [2,4,5,6,11,12,13,14,15], and in the majority of the cases, it is an asymptomatic process [14]. The incidence of the location of the impacted canine depends on race [17], with palatal impaction being more frequent [6,9,18,19,20] in 85% [16,21,22], except iations

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