Kleinpoort Flavie, Ferchichi Hugo, Belkhou Anissa, Tramini Paul, Bigorre Michèle, Captier Guillaume
Faculté d'odontologie, Département de chirurgie orale, Université Paul Sabatier, Toulouse, France.
Faculté d'odontologie, Département d'orthodontie, Université Montpellier 1, Montpellier, France.
J Craniomaxillofac Surg. 2017 Apr;45(4):515-519. doi: 10.1016/j.jcms.2017.01.021. Epub 2017 Jan 31.
The risk of maxillary permanent canine retention is elevated in children with cleft lip and palate (CLP). This study compared this risk in 10 ± 1 year-old patients with unilateral CLP (UCLP) who underwent or not early maxillary bone grafting at the age of 6 ± 1 years.
Retrospective, controlled monocentric and observational study with the following inclusion criteria: patients with UCLP, isolated cleft, pre-surgery orthodontic maxillary expansion, same surgical protocol, same surgical team. The risk of maxillary canine retention was evaluated using a dental panoramic radiograph, on the basis of the canine root development stage and of the angle (> or <45°) between the main axis of the maxillary canine and a virtual reference axis parallel to the medial sagittal axis.
The impaction risk at the age of 10 was of 14.29% (4/28) for the group who underwent early bone grafting and 21.88% (7/32) for the group without early grafting (p = 0.45). Permanent lateral incisor agenesis and the patient's sex did not change this risk.
Early alveolar bone grafting does not significantly change the risk of permanent maxillary canine retention at 10. Long-term followup of a larger population is needed to confirm this result.
唇腭裂（CLP）患儿上颌恒牙尖牙滞留的风险较高。本研究比较了10±1岁单侧唇腭裂（UCLP）患者在6±1岁时接受或未接受早期上颌骨移植的情况下，这种风险的差异。
采用回顾性、对照、单中心观察性研究，纳入标准如下：UCLP患者、孤立性腭裂、术前正畸上颌扩弓、相同手术方案、同一手术团队。根据牙全景片评估上颌尖牙滞留风险，评估依据为尖牙根发育阶段以及上颌尖牙主轴与平行于内侧矢状轴的虚拟参考轴之间的角度（>或<45°）。
早期接受骨移植组在10岁时的阻生风险为14.29%（4/28），未早期接受移植组为21.88%（7/32）（p = 0.45）。恒牙侧切牙缺失和患者性别并未改变这一风险。
早期牙槽骨移植并未显著改变10岁时上颌恒牙尖牙滞留的风险。需要对更多人群进行长期随访以证实这一结果。
