目的 分析全瓷冠与高嵌体对后牙牙体缺损的修复效果及对牙周炎性反应的影响。方法 用随机抽签法将我科2022年2月—2023年5月接治的50例后牙牙体缺损者分为对照组（签号为奇数,全瓷冠修复）与高嵌体组（签号为偶数,高嵌体修复）,各25例,对比两组修复效果（指标为修复体佩戴时间及总体康复时间）、牙周炎性反应、口腔健康指数及并发症发生率。结果 高嵌体组修复体佩戴时间（14.38±2.51）d、总体康复时间为（59.66±4.47）d,短于对照组的（21.96±2.87）d、（93.84±5.26）d（P<0.001）;高嵌体组牙周正常率（88.00%）高于对照组（64.00%）（P<0.05）;高嵌体组修复后的GI、PLI、SBI分别为（0.81±0.19）分、（0.85±0.16）分、（1.04±0.25）分,低于对照组的（0.97±0.23）分、（1.01±0.22）分、（1.31±0.28）分（P<0.05）;高嵌体组并发症发生率（8.00%）接近于对照组（12.00%）（P>0.05）。结论 修复后牙牙体缺损时选用高嵌体修复法可取得相对更好的修复效果,能够缩短患者佩戴修复体时间,加速其康复进程,对牙周炎性反应的减轻、口腔健康的改善均有积极影响,且并发症风险较小,整体效果更优。

Objective To analyze the effect of all-porcelain crown and onlay on posterior tooth defect repair and periodontitis reaction. Methods Fifty cases of posterior dental defects treated in our department from February 2022 to May 2023 were divided into control group（odd-numbered,all-porcelain crown restoration）and onlay group（even-numbered,onlay restoration）with 25 cases each．The repair effect,periodontitis response,oral health index and complication rate were compared between the two groups. Results The wearing time and overall recovery time of the onlay group were shorter than those of the control group（P<0.001）．The periodontal normal rate in the onlay group was higher than that in the control group （P<0.05）．gingival index,plaque index,sulcus bleeding index of the onlay group after repair were lower than those of the control group（P<0.05）．The complication rate of the high inlays group was close to that of the control group（P>0.05）. Conclusions In the repair of post-dental defects,the use of onlay repair can achieve relatively better repair effects,shorten the time for patients to wear the prosthesis,accelerate the rehabilitation process,have a positive impact on the reduction of periodontitis reaction and the improvement of oral health．The risk of its complications is small,and the overall effect is better．