Finkelstein Tamar, Shapira Yehoshua, Pavlidi Aikaterini Maria, Davidovitch Moshe, Blumer Sigalit, Schonberger Shirley, Shpack Nir
J Clin Pediatr Dent. 2020 Aug 1;44(4):268-273. doi: 10.17796/1053-4625-44.4.9.
Tooth transposition is a relatively rare dental anomaly of interchange in position of two adjacent teeth.
To determine the prevalence and distribution of canine transposition in a sample of orthodontic patients and present treatment alternatives and outcome.
The records of 3000 consecutively treated orthodontic patients from a university clinic were surveyed to detect canine transposition in both dental arches. The data was recorded according to gender, age, number and location.
Canine transpositions were detected in 15 subjects, 3 (20%) males and 12 (80%) females presenting a prevalence of 0.5%. Of them, 6 were between the maxillary canine and first premolar, 7 between the maxillary canine and lateral incisor, 2 transpositions were between the mandibular canine and the lateral incisor. A female to male ratio of 4:1 with left side predominance was found. Treatment options include extracting the transposed teeth, maintaining them in their transposed position, or repositioning them in their normal place within the dental arch.
The prevalence of canine transposition in the present sample was found to be 0.5% with a greater frequency in the maxilla. Treatment options include extraction of one of the transposed teeth, alignment of the teeth in their transposed position or correction of the anomaly. The latter gives the best esthetic outcome.
牙齿易位是一种相对罕见的牙齿异常情况，即两颗相邻牙齿位置互换。
确定正畸患者样本中犬牙易位的患病率和分布情况，并介绍治疗方案及结果。
对一所大学诊所连续治疗的3000名正畸患者的记录进行调查，以检测双侧牙弓中的犬牙易位情况。数据按性别、年龄、数量和位置进行记录。
在15名受试者中检测到犬牙易位，其中男性3名（20%），女性12名（80%），患病率为0.5%。其中，6例发生在上颌尖牙与第一前磨牙之间，7例在上颌尖牙与侧切牙之间，2例在下颌尖牙与侧切牙之间。发现女性与男性的比例为4:1，且左侧更为常见。治疗方案包括拔除易位牙、将其维持在易位位置或在牙弓内将其重新定位到正常位置。
本样本中犬牙易位的患病率为0.5%，在上颌更为常见。治疗方案包括拔除一颗易位牙、将牙齿排列在易位位置或矫正异常情况。后者可获得最佳美学效果。
