不同冠根比短种植体在上颌后牙区种植修复的短期临床研究  

Influence of crown-to-implant ratio on maxillary posterior region around short dental implants:A radiological and clinical short-term study

作　　者：徐双波[1] 姚红[1] 许小会[2] XU Shuangbo;YAO Hong;XU Xiaohui(Jiangsu Key Laboratory of Oral Diseases,the Sixth Outpatient Department,Affiliated Hospital of Stomatology Nanjing Medical University,Nanjing 210029,China)

机构地区：[1]南京医科大学口腔疾病研究江苏省重点实验室,南京医科大学附属口腔医院第六门诊部,江苏南京210029 [2]南京医科大学口腔疾病研究江苏省重点实验室,南京医科大学附属口腔医院第一门诊部,江苏南京210029

出　　处：《口腔医学》2019年第12期1090-1094,共5页Stomatology

基　　金：江苏高校优势学科建设工程资助项目(2018-87)

摘　　要：目的观察不同冠根比短种植体在上颌骨高度不足后牙区种植修复的临床效果。方法选取剩余牙槽骨高度为4~5 mm的后牙缺失病例,共计12例患者植入17颗短种植体。随访1年半,检测指标包括种植体存留率、边缘骨水平变化、临床检查(改良菌斑指数、改良出血指数、探诊深度)。对数据进行统计学分析。结果短种植体存留率为100%,总体边缘骨吸收为(0.45±0.07)mm,临床检查平均改良菌斑指数为(1.12±0.32),出血指数为(1.11±0.32),探诊深度为(1.57±0.37)mm。平均冠根比C/IR=1.92±0.30,按1.02.0进行分组,不同冠根比组边缘骨吸收与探诊深度无明显差异,P=0.47;冠根比与改良菌斑指数和出血指数具有相关性,P<0.05。结论在骨高度不足的上颌后牙区,冠根比对种植体早期边缘骨吸收无明显的影响,但对软组织健康可能有影响,应定期复查和维护口腔卫生,以提高种植体的长期稳定性。Objective To investigate the influence of crown-to-implant ratio on marginal bone loss of maxillary bone and clinical effects around short dental implants. Methods Seventeen implants of 12 patients were included for investigation. All implants were from the same type and had an intraosseous length of 6 mm and a diameter of 5.0 or 4.5 mm with 4-5 mm of the residual bone height in maxillary posterior region. Measurements of implant survival rate, marginal bone level changes, clinical examination(improved plaque index, improved bleeding index and probing depth) were performed 18 months after prosthetic loading and the mean follow-up for clinical evaluation was 18 months. Statistical analysis was performed. Results Overall survival rate was 100%. Overall bone resorption was(0.45±0.07) mm. Average improved plaque index was(1.12±0.32), bleeding index was(1.11±0.32), and probing depth was(1.57±0.37)mm. The average crown-to-implant ratio(C/IR) was 1.92±0.30. Based on the ratio(1.02.0), the implants were divided into three groups. There was no significant difference in marginal bone resorption and probing depth(r=0.19,P=0.47), while crown-to-implant ratio was correlated with improved plaque index and bleeding index(P<0.05). Conclusion It is suggested that high crown-to-implant ratios have no significant influence on early marginal bone loss. But high C/IR may increase the risk of inflammation of soft tissue. Periodic review and oral hygiene maintenance should be conducted to improve the long-term stability of implants.

关 键 词：冠根比 短种植体 上颌后牙区 

分 类 号：R783.4[医药卫生—口腔医学]