- 期刊
Factors Associated with Alveolar Bone Density in Maxilla and Mandible
上顎和下頜骨密度的相關因素
摘要
Aim: We sought to identify the factors associated with alveolar bone density through this retrospective analysis of implant surgery cases. Materials and methods: This study investigated adults who underwent dental implantation between January 2003 and December 2016. Baseline demographic and clinical data, including sex, age, systemic condition, and smoking status, were recorded for each individual. Implant site parameters, such as healing time (the period between extraction and implant placement), location, etiology of extraction, healing pattern, and orthodontic treatment prior to dental implant placement, were also analyzed. Bone density was classified, based on the sense while drilling, into dense, medium, and soft bone. Results: A total of 1116 implants from 402 patients were analyzed. Among three groups, only waiting time was a significant factor in both jaws. Bone was denser in mandible than maxilla. Between soft and non-soft groups (dense bone & medium bone), orthodontic treatment before implant surgery was a significant factor in the maxilla before adjustment. Additionally, male sex and diabetes mellitus under medication were protective factors associated with soft bone density in the mandible, even after adjustment. Conclusion: More percentage of soft bone in Taiwanese than in Western population. The factors related to bone density identified in this study can be used for risk assessment of patients prior to implant placement.
並列摘要
目的：通過對植牙手術病例的回顧性分析，我們尋求與齒槽骨密度相關的因素。材料和方法：本研究調查了2003年1月至2016年12月期間接受人工植牙的成年人。每位病患的基本資料，包括性別、年齡、系統狀況和吸煙狀態都列入分析。另外還分析植牙部位的參數，如：癒合時間（拔牙和植牙放置之間的時間）、植牙位置、拔牙的病因、癒合模式和植牙放置前是否接受矯正治療。骨密度根據鑽孔時的感覺，分類為緻密骨、中等質地骨與鬆軟骨。結果：共納入402例患者的1116之人工植牙進行分析。在三組人中，只有癒合時間是同時影響上下顎骨密度的重要因素。下顎骨密度大於上顎骨密度。在鬆軟骨和非鬆軟骨（緻密骨+中等質地骨）兩組之間的比較，植入手術前的矯正治療是調整前的一個重要因素。此外男性性別和糖尿病藥物，即使在調整後，在下頜還是保護骨密度的因素。結論：臺灣人鬆軟骨質的比例高於西方人。本研究中確定的與骨密度相關的因素可用於植牙前對患者的風險評估。