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目的研究固定修复中修复体边缘设计于龈缘下方时,在牙体预备中如何保护龈沟底上皮附着,取得清晰完整的印模。方法对在门诊烤瓷冠桥修复的124例268颗牙,采用备牙术中排龈线排龈,制取印模前排龈膏排龈。结果排龈后制取印模肩台清晰连续,与牙龈界限清楚,牙龈无出血或轻微渗血。结论合理应用排龈技术可以减少牙体预备时对牙龈组织的损伤,取得清晰印模,达到最佳的冠桥修复效果。
Objective To study how to protect the gingival sulcus epithelium from adhering to the margin of the gingival margin when the margin of the prosthesis is fixed under the gingival margin in order to obtain a clear and complete impression. Methods A total of 124 cases of 268 teeth repaired in the porcelain crown - crown bridge at outpatient department were treated with gingival retraction gingival retraction. The results of row after gingival impression system shoulder shoulder clear and continuous, clear border with the gums, no bleeding gums or slight bleeding. Conclusion The proper application of gingival retraction technique can reduce the damage to gingival tissue during tooth preparation and obtain a clear impression to achieve the best crown bridge repair effect.