一种使用锥形束计算机断层扫描对腭裂患者牙槽骨移植进行容积评估的新方法。
A new method of volumetric assessment of alveolar bone grafting for cleft patients using cone beam computed tomography.
作者信息
Feng Bin, Jiang Meng, Xu Xue, Li Jingtao
机构信息
Department of Oral Radiology, Stomatology Hospital affiliated with Zhejiang University of Medicine, Zhejiang University, Hangzhou, China.
State Key Laboratory of Oral Diseases and Department of Oral Radiology, West China School of Stomatology, Sichuan University, Chengdu, China.
出版信息
Oral Surg Oral Med Oral Pathol Oral Radiol. 2017 Aug;124(2):e171-e182. doi: 10.1016/j.oooo.2017.04.003. Epub 2017 Apr 19.
OBJECTIVE
The aims of this study were to propose a new method for volumetric assessment of alveolar bone grafting and to quantitatively assess alveolar bone grafting based on this method.
STUDY DESIGN
Cone beam computed tomography images of 18 patients with unilateral cleft alveolus were selected. Volume of the alveolar cleft before grafting operation (VOLcleft), graft bone filled into cleft immediately after operation (VOLgraft), and bony bridge formed 1 year after operation (VOLbridge) were obtained. The grafting fill rate (VOLgraft/VOLcleft × 100%), bony bridge formation rate (VOLbridge/VOLcleft × 100%), and grafting resorption rate [(VOLgraft - VOLbridge)/VOLgraft × 100%] were calculated. Correlations between these parameters were investigated. Intraobserver and interobserver reliability of this method was assessed.
RESULTS
Intraobserver and interobserver reliability was good as no statistically significant difference was seen, and the Pearson correlation coefficient was significant (intraobserver R ≥ .953; interobserver, R ≥ .859). A positive linear correlation (R = .808; P < .001) between grafting fill rate and bony bridge formation rate and a negative linear correlation (R = .458, P = .002) between grafting fill rate and grafting resorption rate were found.
CONCLUSIONS
This method was practical and valuable for quantitative assessment of alveolar bone grafting.
目的
本研究旨在提出一种用于牙槽骨移植容积评估的新方法，并基于该方法对牙槽骨移植进行定量评估。
研究设计
选取18例单侧牙槽嵴裂患者的锥形束计算机断层扫描图像。获取移植手术前牙槽裂的容积（VOLcleft）、术后即刻填充到裂隙中的移植骨容积（VOLgraft）以及术后1年形成的骨桥容积（VOLbridge）。计算移植填充率（VOLgraft/VOLcleft×100%）、骨桥形成率（VOLbridge/VOLcleft×100%）和移植吸收率[（VOLgraft - VOLbridge）/VOLgraft×100%]。研究这些参数之间的相关性。评估该方法的观察者内和观察者间可靠性。
结果
观察者内和观察者间可靠性良好，未见统计学显著差异，Pearson相关系数显著（观察者内R≥.953；观察者间，R≥.859）。发现移植填充率与骨桥形成率之间呈正线性相关（R =.808；P <.001），移植填充率与移植吸收率之间呈负线性相关（R =.458，P =.002）。
结论
该方法对牙槽骨移植的定量评估具有实用性和价值。
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