Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan.
Department of Information Science, Faculty of Arts and Sciences at Fujiyoshida, Showa University, Tokyo, Japan.
Clin Exp Dent Res. 2021 Aug;7(4):484-489. doi: 10.1002/cre2.384. Epub 2020 Dec 20.
Few reports have examined dental arch morphology (DAM) after dental implant placement in cleft patients and its actual state is unclear.
To analyze the presence of changes in DAM and influencing factors in cleft lip and/or palate (CLP) patients who receive implant treatment in the alveolar cleft region.
Subjects comprised 20 CLP patients in whom maxillary dental arch width (DAW) was evaluated before and after implant treatment based on computed tomography data. First, widths between the canines (W3), between the first premolars (W4), between the second premolars (W5), and between the first molars (W6) were measured before and after surgery. Changes in distance were analyzed using the Wilcoxon signed-rank test, revealing a significant increase in W6. Analysis of Co-Variance was performed with the difference in W6 after implant treatment as the response variable, and the following six items as explanatory variables: sex; cleft type; age at alveolar bone graft; time to implantation after bone grafting; number of implants; and time after completion of the observation period.
The reduction in W6 was larger in the order of complete bilateral CLP, complete unilateral CLP, and unilateral cleft lip and alveolus, and the change decreased with an increasing number of implants.
Implant treatment of the alveolar cleft region may result in a slight reduction in width of the dental arch after treatment completion.
鲜有研究报告评估过牙槽嵴裂植骨术后患者牙弓形态（DAM）的变化情况，其实际状态并不明确。
分析牙槽嵴裂植骨区接受种植治疗的唇腭裂（CLP）患者 DAM 变化的存在情况及其影响因素。
本研究共纳入 20 例 CLP 患者，基于 CT 数据评估其上颌牙弓宽度（DAW）在种植治疗前后的变化。首先，测量术前和术后尖牙（W3）、第一前磨牙（W4）、第二前磨牙（W5）和第一磨牙（W6）之间的宽度。采用 Wilcoxon 符号秩检验分析距离变化，结果显示 W6 显著增加。以种植治疗后 W6 的差值为应变量，以性别、裂隙类型、牙槽骨植骨年龄、植骨后种植时间、种植体数量和观察期结束后时间 6 个项目为解释变量，进行协方差分析。
完全双侧 CLP、完全单侧 CLP 和单侧唇裂伴牙槽突裂的 W6 减小量依次更大，且减小量随种植体数量的增加而减少。
牙槽嵴裂植骨区的种植治疗可能会导致治疗完成后牙弓宽度略有减小。
