Al-Salmany Laith Hamood Aswad, Hussein Lara Kusrat, Altaee Zena Hekmat
Department of Orthodontics, College of Dentistry, University of Anbar, Iraq.
Department of Periodontics, College of Dentistry, University of Anbar, Iraq.
J Orthod Sci. 2025 Jun 10;14:15. doi: 10.4103/jos.jos_109_24. eCollection 2025.
Canine impaction isn't uncommon malocclusion and their treatment is complex and annoying to both patient and orthodontist. This study was aimed to determine the prevalence of impacted canine in orthodontic patients of Fallujah city with determining the related etiological factors.
The study consisted of 590 patients (412 females and 178 males) coming to the clinic for orthodontic treatment. A panoramic radiograph was taken for each subject. Cone beam computed tomography was taken for each patient with an impacted canine for accurate localization of trapped teeth. Patients with impacted canines were examined for number, distribution, crown depth, angulation and apical position of impacted teeth, lateral incisor condition, and presence of associated local factors.
For the total sample, forty patients (40) had impacted canines with a mean age of 22.6 years. Female to male ratio was 1.5:1. The maxilla represented 80.6% of total impaction cases. Palatally impacted canines represented 72.6% and were mostly seen bilaterally. The mandible formed 19.4% of impacted canines. Mesially and vertically angulated impacted teeth represented the majority of the cases for upper and lower jaws respectively. The impaction depth was recognized as D2 at the maxilla and D1 at the mandible as the commonest impaction level. Apical mislocation was presented in 21% of cases.
The prevalence of impacted canines was 6.8%. Retained primary canines were associated with 76% of total impacted canines. About 32% of total maxillary impacted canines were associated with anomalous or missing lateral incisors.
犬牙阻生是一种常见的错牙合畸形，其治疗对患者和正畸医生来说都很复杂且令人烦恼。本研究旨在确定费卢杰市正畸患者中犬牙阻生的患病率，并确定相关的病因因素。
本研究包括590名前来诊所接受正畸治疗的患者（412名女性和178名男性）。为每位受试者拍摄全景X线片。对每例犬牙阻生患者进行锥形束计算机断层扫描，以准确确定阻生牙的位置。对犬牙阻生患者检查阻生牙的数量、分布、冠部深度、角度和根尖位置、侧切牙情况以及相关局部因素的存在情况。
在全部样本中，40例患者存在犬牙阻生，平均年龄为22.6岁。女性与男性比例为1.5:1。上颌阻生占总阻生病例的80.6%。腭侧阻生犬牙占72.6%，且大多为双侧。下颌阻生犬牙占19.4%。上颌和下颌阻生牙分别以近中倾斜和垂直倾斜为主。上颌阻生深度最常见为D2级，下颌为D1级。21%的病例存在根尖错位。
犬牙阻生的患病率为6.8%。滞留乳牙与76%的总阻生犬牙有关。约32%的上颌阻生犬牙与侧切牙异常或缺失有关。
