Conical Beam CT Measurement of Alveolar Bone Height,Cortical Bone Thickness and Density before Mandibular Alveolar Ridge Restoration and the Correlation Analysis of the Restoration Effect
Conical Beam CT Measurement of Alveolar Bone Height,Cortical Bone Thickness and Density before Mandibular Alveolar Ridge Restoration and the Correlation Analysis of the Restoration Effect
Objective To observe the correlation between the alveolar bone height,cortical bone thickness and density measured by conical beam CT(CBCT)before mandibular alveolar ridge restoration and the restoration effect.Methods A total of 146 patients with low flat mandibular alveolar ridge were selected from January 2022 to October 2023,all of whom underwent full denture restoration.They were followed up for 6 months,and were divided into good repair group(121 cases)and poor repair group(25 cases)according to the denture retention effect.The baseline data,alveolar bone height,cortical bone thickness and cortical bone mineral density measured by CBCT before restoration were compared between the two groups.The relationship between alveolar bone height,cortical bone thickness and cortical bone mineral density and alveolar ridge grade and the correlation with the restoration effect were analyzed,and the predictive value of the restoration effect was evaluated.Results The proportion of alveolar ridge grade Ⅳ in poor repair group was higher than that in good repair group(P＜0.05).The anterior alveolar bone height,cortical bone thickness and cortical bone density in poor repair group were lower than those in good repair group(P＜0.05).The alveolar bone height,cortical bone thickness and cortical bone density of patients with grade Ⅳ alveolar ridge before restoration were lower than those in good restoration group(P＜0.05).Alveolar bone height,cortical bone thickness and cortical bone density were negatively correlated with alveolar ridge grade before restoration(P＜0.05).ROC curve analysis showed that the AUC of anterior alveolar bone height,cortical bone thickness,cortical bone density and the combined prediction effect of mandibular alveolar ridge restoration were 0.815,0.769,0.820 and 0.913.The best truncation value obtained by ROC curve was divided into low value and high value.Risk analysis showed that the risk of poor repair in patients with low mandibular alveolar ridge with low value of anterior alveolar bone height,cortical bone thickness and cortical bone density was 6.884 times,6.160 times and 6.585 times higher than that in patients with high value(P＜0.05).Conclusion CBCT measurement of anterior alveolar bone height,cortical bone thickness and cortical bone density is significantly correlated with alveolar ridge grading and repair effect,which has a high predictive value for the repair effect,and can assist in early clinical prediction and provide an objective basis for making a reliable repair plan.
关键词
下颌低平牙槽嵴/锥形束CT/牙槽骨高度/皮质骨厚度/皮质骨密度/修复效果/相关性
Key words
Low Flat Mandibular Alveolar Ridge/Conical Beam CT/Alveolar Bone Height/Cortical Bone Thickness/Cortical Bone Density/Repair Effect/Correlation
维普
万方数据