Almarhoumi Asim Abdulrahman, Okashah Yazan A, Alrehaili Mohammed A, Alrehaili Khalid N
Department of Orthodontics, College of Dentistry and University Dental Hospital, Taibah University, Saudi Arabia.
Dental Intern, University Dental Hospital, Taibah University, Saudi Arabia.
J Orthod Sci. 2022 May 4;11:15. doi: 10.4103/jos.jos_188_21. eCollection 2022.
Impacted canine (IC) is a dental anomaly that varies in its frequency according to the population of interest. The aim of this study is to investigate the frequency and distribution pattern of maxillary ICs (MxIC) and mandibular ICs (MnIC) in the population of Al-Madinah, Saudi Arabia.
A cross-sectional retrospective study of all patients attended Taibah University Dental Hospital, Madinah, Saudi Arabia. Inclusion criteria were individuals aged 15 years and older and no history of orthodontic treatment or craniofacial syndromes. Patients with incomplete dental records or missing/distorted Orthopantomograph (OPG) were excluded. All OPGs were taken using standardized equipment. Data were explored for frequency and pattern of canine impaction both in the maxilla and the mandible and statistically tested to detect significant differences.
A total of 7466 individuals fulfilled the inclusion criteria with mean age of 37.43 ± 14.5 years. Of the total sample, 173 individuals had at least one IC. MxIC alone occurred in 86.71% of the cases, while MnIC occurred in 8.67%. The remaining 4.62% had at least one IC in each jaw. Unilateral IC occurred in 89.2% of the cases with left-side predominance in the maxilla.
In this sample, the frequency of MxIC was 2.1% and MnIC was 0.3%. Almost equal distribution of IC occurred between females and males (IC Odds ratio F:M 1:1.08). Further studies are required to investigate the potential association of IC incidence with other predictor variables.
阻生犬齿(IC)是一种牙齿异常情况,其发生频率因所研究的人群而异。本研究的目的是调查沙特阿拉伯麦地那人群中上颌阻生犬齿(MxIC)和下颌阻生犬齿(MnIC)的发生频率及分布模式。
对沙特阿拉伯麦地那泰巴大学牙医院就诊的所有患者进行横断面回顾性研究。纳入标准为年龄15岁及以上且无正畸治疗史或颅面综合征病史。排除牙科记录不完整或全景曲面断层片(OPG)缺失/变形的患者。所有OPG均使用标准化设备拍摄。探索上颌和下颌犬齿阻生的频率和模式数据,并进行统计学检验以检测显著差异。
共有7466人符合纳入标准,平均年龄为37.43±14.5岁。在全部样本中,173人至少有一颗阻生犬齿。仅上颌阻生犬齿发生在86.71%的病例中,而下颌阻生犬齿发生在8.67%的病例中。其余4.62%的患者每侧颌骨至少有一颗阻生犬齿。单侧阻生犬齿发生在89.2%的病例中,上颌以左侧居多。
在本样本中,上颌阻生犬齿的发生率为2.1%,下颌阻生犬齿的发生率为0.3%。阻生犬齿在女性和男性中的分布几乎相等(阻生犬齿优势比F:M为1:1.08)。需要进一步研究来调查阻生犬齿发生率与其他预测变量之间的潜在关联。