Ousehal L, Lazrak L, Essmaali F E, Ngom P I
Dpt of orthodontics, Faculty of Dentistry, Casablanca, Morocco.
Odontostomatol Trop. 2012 Sep;35(139):12-8.
The aim of our study was to evaluate the incidence of orthodontically induced root resorption during the tooth alignment and leveling phase, and to assess the impact of the variables age, sex and degree and direction of incisor displacement. We studied a consulting population at the dentofacial orthopaedics unit of the Dental Consultation and Treatment Centre (DCTC), Casablanca. Our sample was composed of 30 exposed cases and 30 non-exposed cases, followed up for a period of 8 months. A survey document was drawn up for data collection, and retro-alveolar radiographic imaging was used to evaluate resorption. Our results showed that the patients receiving orthodontic treatment all developed minor root resorptions during the alignment and levelling phase in the incisor group. We found that the central incisors underwent greater resorption than the lateral incisors.
我们研究的目的是评估牙齿排齐整平阶段正畸诱导牙根吸收的发生率，并评估年龄、性别、切牙位移程度和方向等变量的影响。我们对卡萨布兰卡牙科咨询与治疗中心（DCTC）牙颌面正畸科的就诊人群进行了研究。我们的样本由30例暴露病例和30例非暴露病例组成，随访8个月。我们制定了一份调查问卷用于数据收集，并采用牙槽后位X线影像评估牙根吸收情况。我们的结果显示，接受正畸治疗的患者在切牙组的排齐整平阶段均出现了轻微的牙根吸收。我们发现，中切牙比侧切牙的牙根吸收更严重。
