Bone volume after secondary bone grafting in unilateral and bilateral clefts determined by computed tomography scans
Bone volume after secondary bone grafting in unilateral and bilateral clefts determined by computed tomography scans
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DOI：
10.1067/moe.2001.115274
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发表时间：
2001-08-01
影响因子：
--
通讯作者：
Tuinzing, DB
中科院分区：
文献类型：
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作者：
Van der Meij, AJW;Baart, JA;Tuinzing, DB
客观的。本研究的目的是评估腭裂患者骨移植的结果，从而评估促进恒尖牙萌出（尤其是颊腭方向）所需的骨量进入骨移植物。研究设计。对 42 名单侧和 8 名双侧唇腭裂患者在 9 岁时（早期二次骨移植）或 12 岁时（晚期二次骨移植）接受手术的术后立即和术后 1 年进行的计算机断层扫描进行了比较。从手术后立即拍摄的计算机断层扫描中从骨移植中心选择三片，然后与术后 1 年计算机断层扫描中的相应切片进行比较。使用Wilcoxon 2样本秩和检验进行统计分析。结果。在单侧裂组中，1年后70%的移植骨保留在裂隙区域，而在双侧裂组中，1年后仅保留45%的初始骨移植物。结论。早期二次植骨与晚期二次植骨之间无统计学差异。在大多数情况下，目标区域存在足够量的骨质以促进恒尖牙的萌出。
Objective. The purpose of this study was to evaluate the outcome of bone grafts in cleft palate patients, thus assessing the amount of bone necessary to facilitate eruption-especially in the buccopalatal direction-of the permanent canine into the bone graft.Study design. Computed tomography scans taken immediately postoperatively and 1 year postoperatively of 42 unilateral and of 8 bilateral cleft lip and palate patients who underwent surgery at the age of 9 years (early secondary bone graft) or 12 years (late secondary bone graft) were compared. Three slices from the computed tomography scans taken immediately after the surgery were selected from the center of the bone graft and were then compared with corresponding slices from the 1-year postoperative computed tomography scans. Statistical analysis was performed by using the Wilcoxon 2-sample rank sum test.Results. In the unilateral cleft group, 70% of the transplanted bone remained in the cleft area after 1 year, whereas in the bilateral cleft group, only 45% of the initial bone graft remained after 1 year.Conclusion. No statistically significant difference was found between early secondary bone grafting and late secondary bone grafting. In most cases, a sufficient amount of bone was present in the target area to facilitate eruption of the permanent canine.