临床口腔医学杂志2026，Vol.42Issue(5)：270-273,4.DOI:10.3969/j.issn.1003-1634.2026.05.004
术前CBCT测量HU值与后牙区常规种植体初期稳定性及二期手术需求的相关性研究
Correlation between preoperative CBCT-measured HU values,primary stability and secondary surgery need of conventional implants in the posterior dental region
宋倩 1王鹏 1许丰伟1
作者信息
- 1. 山东医药大学口腔医院 山东 烟台 264000||烟台市口腔医院 山东 烟台 264000
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摘要
Abstract
Objective:To investigate the correlation between bone mineral density Hounsfield Unit(HU)values measured by preoperative cone beam computer tomography(CBCT)and primary stability as well as the need for secondary surgery of conventional implants in the posterior dental region,define the quantitative early warning interval of HU values for the need for secondary surgery.Methods:The clinical data of 62 patients who received single conventional implant placement in the posterior dental region in our hospital from March to September 2025 were retrospectively analyzed.The patients were divided into groups according to whether secondary surgery was required after implantation.Multiple statistical methods were used to analyze the correlation between HU values in different segments and the need for secondary surgery,and the receiver operating characteristic(ROC)curve was adopted to determine the critical value and early warning interval of HU values.Re-sults:HU values in all segments of the group requiring secondary surgery were significantly lower than those of the group without secondary surgery(P<0.001),and the HU values at the implant root showed the strongest correlation(r=-0.712).Mean HU values and the maxillary posterior dental region were independent predictors for the need for secondary surgery(P<0.05).The area under the curve(AUC)of mean HU values for predicting the need for secondary surgery was 0.897,with the optimal critical value of 1250 HU.Implant brand and specification had no significant effect on the need for secondary surgery(P>0.05).Conclusion:HU values measured on preoperative CBCT can predict the primary stability of dental implants and the need for secondary surgery in the posterior dentition,with apical HU values showing the best predictive performance.The established grading warning threshold for HU values,combined with the high-risk characteristics of the posterior maxilla,can guide intervention strategies.Adjusting implant brand or dimensions shows no significant benefit under low HU conditions.关键词
种植体初期稳定性/Hounsfield Unit值/CBCT/二期手术需求/后牙常规种植/预警区间Key words
Implant primary stability/Hounsfield Unit value/CBCT/Need for secondary surgery/Conventional pos-terior dental implantation/Early warning interval分类
医药卫生引用本文复制引用
宋倩,王鹏,许丰伟..术前CBCT测量HU值与后牙区常规种植体初期稳定性及二期手术需求的相关性研究[J].临床口腔医学杂志,2026,42(5):270-273,4.
