Bourzgui Farid, Sebbar Mourad, Ait Ikiss Jamila, Hamza Mouna, Abidine Zouhair, El Quars Farid
Dentofacial Orthopedics Department, Faculty of Dental Medicine, Université Hassan 2, Ain Chok, Casablanca, Morocco.
Int Orthod. 2012 Sep;10(3):311-7. doi: 10.1016/j.ortho.2012.06.009. Epub 2012 Aug 18.
The aim of this investigation was to study the prevalence of tooth transposition in a population of orthodontic patients.
A total of 547 patient records from our dentofacial orthopedics department were consulted. Each file included clinical observations, panoramic radiography, lateral cephalograms and dental casts. Patients with incomplete or poorly kept orthodontic records were excluded from the sample, as were those with unreadable panoramic radiographs. The classification of tooth transpositions used in the study was that first proposed by S. Peck and L. Peck in 1995. Computerized statistical analysis was performed using Epi-Info 6.0.
The prevalence of tooth transposition was 2%, with the female population more heavily affected (64%). Tooth transposition occurred only in the maxillary arch. Of all the teeth, the canines were the most involved in this anomaly (100%). Transposition was associated with tooth agenesis in 18% of cases, peg lateral incisors in 27%, and persistent deciduous teeth in 18%.
The prevalence of tooth transposition in this study population remained low, but was nonetheless higher than that found in most published investigations.
本研究的目的是调查正畸患者群体中牙齿易位的患病率。
查阅了我们牙颌面正畸科的547份患者记录。每份档案都包含临床观察、全景X线片、头颅侧位片和牙模。正畸记录不完整或保存不佳的患者以及全景X线片无法辨认的患者被排除在样本之外。本研究采用的牙齿易位分类是S. 佩克和L. 佩克于1995年首次提出的分类方法。使用Epi-Info 6.0进行计算机统计分析。
牙齿易位的患病率为2%，女性受影响的比例更高（64%）。牙齿易位仅发生在上颌牙弓。在所有牙齿中，犬齿受这种异常影响的比例最高（100%）。18%的病例中牙齿易位与牙齿缺失有关，27%与钉状侧切牙有关，18%与乳牙滞留有关。
本研究群体中牙齿易位的患病率仍然较低，但高于大多数已发表研究中的患病率。
