A new method of volumetric assessment of alveolar bone grafting for cleft patients using CBCT

Publication date: Available online 19 April 2017
Source:Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Author(s): Bin Feng, Meng Jiang, Xue Xu, Jingtao Li
ObjectivesThe aims of this study were to propose a new method for volumetric assessment of alveolar bone grafting, and to quantitatively assess the alveolar bone grafting based on this method.Study DesignCBCT images of 18 patients with unilateral cleft alveolus were selected. Volume of 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. Grafting filling rate (VOLgraft/VOLcleft×100%), bony bridge forming rate (VOLbridge/VOLcleft×100%), and grafting resorption rate [(VOLgraft-VOLbridge)/VOLgraft×100%] were calculated. Correlations between these parameters were investigated. Intra- and inter-observer reliability of this method was assessed.ResultsIntra- and inter-observer reliability was good as no statistically significant difference was seen, and Pearson correlation coefficient was profound (intra-observer: r≥0.953, inter-observer: r≥0.859). A positive linear correlation (R2=0.808, P＜0.001) between grafting filling rate and bony bridge forming rate, and a negative linear correlation (R2=0.458, p=0.002) between grafting filling rate and grafting resorption rate were found.ConclusionThis method was practical and valuable for quantitatively assessment of alveolar bone grafting.



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