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．

目的 对比分析二氧化锆全瓷冠与钴铬合金烤瓷冠修复牙体牙列缺损的临床疗效。方法 选择2008年3月以来广东工业大学医院口腔科和江西省萍乡市安源区现代口腔门诊部牙体牙列缺损全冠修复患者150例364颗,随机分为2组,实验组采用二氧化锆全瓷冠75例185颗,对照组采用钴铬合金烤瓷冠75例179颗,修复后随访2年对比观察,结果采用χ²检验分析。结果 两组在修复体完整性、固位、边缘密合度、牙敏感症状、继发龋、邻面接触点、过敏反应方面差异无统计学意义(P＞0.05);但在牙龈状况、龈缘着色、颜色匹配方面差异有统计学意义(P＜0.01)。结论 二氧化锆全瓷冠修复体美学效果和生物相容性优于钴铬合金烤瓷冠。

Objective To compare and analyze the clinical effects of restoring tooth dentition defect by using zirconium dioxide full porcelain crowns and cobalt chromium alloy porcelain crowns. Methods 150 patients with 364 teeth suffering from tooth dentition defect in hospital of guangdong university of technology and modern stomatology clinic in pingxiang since March of 2008 are chosen and randomly divided into two groups. 75 patients with 185 teeth in the experimental group are restored with zirconium dioxide full porcelain crowns and 75 patients with 179 teeth in the control group are restored with cobalt chromium alloy porcelain crowns, which was followed up with 2-year observation. Results There is no statistical significance between the two groups in terms of repair integrity, retention, edge adaptation, tooth sensitivity symptoms, secondary caries, contact points, and allergic reaction(P＞0.05). But statistical significance exists in gingival status, gingival coloration, and color matching(P＜0.01). Conclusion Zirconium dioxide full porcelain crowns are superior to cobalt chromium alloy porcelain crowns in aesthetic effect and biocompatibility.