Ku Ja Hyeong, Han Byoul, Kim Jaehyun, Oh Jiyoung, Kook Yoon-Ah, Kim Yoonji
Department of Orthodontics, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
Graduate School of Clinical Dental Science, The Catholic University of Korea, Seoul, Korea.
Korean J Orthod. 2022 Jul 18;52(5):324-333. doi: 10.4041/kjod21.280.
The aim of this study was 1) to investigate the prevalence and pattern of dental anomalies (DAs), 2) to compare DAs according to the type of malocclusion, and 3) to investigate the correlation between tooth impaction and other DAs in the Korean orthodontic population.
A total of 3,240 orthodontic patients were classified as Class I, Class II, or Class III malocclusion groups. The presence and location of common DAs, including impaction, microdontia, agenesis, supernumerary tooth, transposition, and fusion, were identified by examining diagnostic records. Furthermore, samples were classified as Group 1 without impaction or Group 2 with impaction. The prevalence of other DAs concurrent with impaction was investigated and compared to Group 1.
Impaction was the most prevalent DA, followed by microdontia, agenesis, and supernumerary. Class I and Class III groups showed the same order of prevalence, but agenesis was more frequent than microdontia in the Class II group. The prevalence of the four DAs was lowest in the Class III group. Overall, 8.6% of patients were classified into Group 2. The incidence of DAs other than impaction and the prevalence of multiple concurrent DAs were significantly higher in Group 2. Impaction showed a significant relationship with supernumerary tooth, transposition, and fusion.
The prevalence and pattern of DAs varied depending on the type of malocclusion. As there was a higher risk of other DAs in patients with impacted teeth, early detection of the impacted tooth and a detailed diagnosis of other possible DAs may be essential.
本研究的目的是：1）调查牙齿异常（DAs）的患病率和模式；2）根据错牙合类型比较牙齿异常情况；3）研究韩国正畸人群中牙齿阻生与其他牙齿异常之间的相关性。
总共3240名正畸患者被分为安氏I类、安氏II类或安氏III类错牙合组。通过检查诊断记录来确定常见牙齿异常的存在和位置，包括阻生、过小牙、牙缺失、多生牙、易位和融合。此外，样本被分为无阻生的第1组或有阻生的第2组。研究与阻生同时存在的其他牙齿异常的患病率，并与第1组进行比较。
阻生是最常见的牙齿异常，其次是过小牙、牙缺失和多生牙。安氏I类和安氏III类组的患病率顺序相同，但安氏II类组中牙缺失比过小牙更常见。这四种牙齿异常在安氏III类组中的患病率最低。总体而言，8.6%的患者被归入第2组。第2组中除阻生外的牙齿异常发生率和多种并发牙齿异常的患病率显著更高。阻生与多生牙、易位和融合有显著关系。
牙齿异常的患病率和模式因错牙合类型而异。由于阻生牙患者出现其他牙齿异常的风险更高，早期发现阻生牙并对其他可能的牙齿异常进行详细诊断可能至关重要。
