Tan Elaine Li Yen, Kuek Meaw Charm, Wong Hung Chew, Ong Serene Ai Kiang, Yow Mimi
1 Department of Orthodontics, National Dental Centre, Singapore.
2 Biostatistics Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
Cleft Palate Craniofac J. 2018 Apr;55(4):582-589. doi: 10.1177/1055665617750489. Epub 2018 Jan 4.
Children with cleft lip and palate are reported to be commonly associated with higher prevalence of dental anomalies such as hypodontia, supernumeraries, and abnormalities in tooth size, shape, and position. This study investigated the prevalence of dental anomalies in a longitudinal cohort of children with unilateral cleft lip and palate (UCLP).
The study was a retrospective analysis of radiographs, study models, and treatment notes.
Sixty patients with repaired UCLP aged 13 years old with complete dental records dating from 5 years of age were included.
Study casts, dental panoramic, anterior maxillary occlusal, and periapical radiographs of the patients were examined for cleft-sidedness, congenitally missing permanent teeth, supernumerary teeth, microdontic, and macrodontic teeth in the anterior maxillary region, presence of malformed permanent cleft-sided lateral incisor and its morphology (peg-shaped, conical shaped, canine-formed), positions of the permanent lateral incisors relative to the cleft side and presence of rotated cleft-sided central incisors.
Of the 60 patients studied, 63.3% had hypodontia, 21.7% had supernumerary teeth, 69.6% had microdontia, and 12.5% had macrodontia. All of the cleft-sided permanent lateral incisors had associated anomalies, with a large proportion (43.1%) missing; and when present in 31 subjects, the majority (90.3%) was positioned distal to the cleft. Most of the cleft-sided permanent central incisors were rotated if present, and prevalent at 86.7%.
A high prevalence of dental anomalies was observed in this sample of children with UCLP.
据报道，唇腭裂患儿通常伴有较高的牙齿异常发生率，如牙齿缺失、多生牙以及牙齿大小、形状和位置异常。本研究调查了单侧唇腭裂（UCLP）患儿纵向队列中的牙齿异常发生率。
本研究是对X光片、研究模型和治疗记录的回顾性分析。
纳入60例13岁的UCLP修复患者，其完整的牙科记录始于5岁。
检查患者的研究模型、牙科全景片、上颌前部咬合片和根尖片，以确定腭裂侧、先天性恒牙缺失、多生牙、上颌前部区域的过小牙和过大牙、永久性腭裂侧侧切牙的畸形及其形态（钉状、锥形、犬牙状）、永久性侧切牙相对于腭裂侧的位置以及腭裂侧中切牙的旋转情况。
在研究的60例患者中，63.3%有牙齿缺失，21.7%有多生牙，69.6%有过小牙，12.5%有过大牙。所有腭裂侧的永久性侧切牙均伴有异常，其中很大一部分（43.1%）缺失；在31名患者中出现时，大多数（90.3%）位于腭裂远端。大多数腭裂侧的永久性中切牙若存在则发生旋转，发生率为86.7%。
在该UCLP患儿样本中观察到较高的牙齿异常发生率。
