老年人烤瓷冠修复三种肩台设计的牙龈指数评价

Evaluation of the gingival index in metal-porcelain crowns with three configurations shoulder designs in the aged

目的:对比3种不同龈缘肩台设计的烤瓷熔附金属全冠对老年患者基牙牙龈指数的影响。方法:收集115例(156颗牙)牙体缺损的老年患者,随机分为3组,分别采用龈上肩台、龈边缘肩台、龈下肩台行烤瓷冠修复。测定修复前及修复后1年基牙牙龈指数变化。结果:3组基牙牙龈指数均有明显上升,与修复前相比差异有显著性。3组基牙牙龈指数上升程度相互之间无明显差异。结论:3种类型肩台烤瓷冠修复,对老年人基牙牙龈健康均有不良影响,其程度与设计类型无明显相关性。

Objective： To compare the gingival index （GI） of the abutment teeth of porcelain-fused-to-metal crowns （PFM） with three different designs of configuration shoulder in the aged. Methods： 115 cases （156 teeth） of the old patients with PFM were collected, which were divided into three groups. One of three kinds of designs （up-gingival shoulder, gingival margin shoulder, and under-gingival shoulder） was used for each group. The GI of the abutment teeth was examined before PFM restorations and 1 year after PFM restorations. Results： 1 year after restorations, the GI of the three groups were all higher than before, and the incidence increased significantly. However, the increase of GI were similar among the three groups. Conclusion： The three different designs of configuration shoulder for PFM have similar negative effects on gingival health of the abutment teeth in the aged.