前牙全冠修复的临床效果

Clinical effects of full crown prosthesis on anterior teeth

目的比较钴铬合金基底烤瓷冠与银钯合金基底烤瓷冠及全瓷冠3种修复体进行前牙修复的临床效果，为前牙临床修复提供参考。方法选择需要行上、下颌前牙修复的患者90例，分别进行钴铬合金烤瓷冠（60颗）、银钯合金烤瓷冠（46颗）、IPSe．maxPress全瓷冠（38颗）修复，分别在修复前、修复后6个月、12个月3个时间段观察牙龈指数的变化，并且对3种修复体颈缘着色、边缘密合度、修复体颜色、修复体折裂和修复体外形等临床指标进行评估。结果银钯合金烤瓷冠组和IPSe．maxPress全瓷冠组在修复后牙龈健康状况均优于钴铬合金烤瓷冠组（P〈O．05）；全瓷冠组未出现颈缘染色现象，且其修复体色泽、外形均优于钴铬合金烤瓷冠组（P〈0．05）；银钯合金烤瓷冠组颈缘染色和修复体边缘密合度与钴铬合金烤瓷冠组相比，差异有统计学意义（P〈0．05）。结论IPSe．maxPress全瓷冠组和银钯合金烤瓷冠组的临床修复效果优于钴铬合金烤瓷冠组，以IPSe．maxPress全瓷冠组的修复效果最好。

Objective To evaluate the clinical effects of anterior teeth repair of three different restorations made of Co-Cr alloy, Ag-Pd alloy and all-ceramic crowns. Methods 90 cases who needed the both maxillary and mandibular anterior teeth restarations were selected and treated respectively with Co-Cr alloy porcelain fused to metal crowns （PFM）（60 teeth）, Ag Pd alloy PFM （46 teeth）and IPS e.max Press Porcelain full crown （38 teeth）. Gingival index was observed before restoration and in 6 and 12 months after restoration. Meanwhile, clinical indicators of two restorations were evaluated as cervical margin＇s coloration, margin fitness degree, color of restorations, fracture of restorations and contour of restorations, etc. Results The healthy condition of gingiva in groups of Ag-Pd alloy PFM and IPS e.max Press Porcelain full crown were superior to the group of Co-Cr alloy PFM （P〈0.05）. There was no cervical margin＇s coloration in groug of all-ceramic PFM. The color and contour of this group was superior to the group of Co-Cr ahoy PFM （P 〈0.05）. The significant difference between group of Co-Cr alloy and group of Ag-Pd alloy was cervical margin＇s coloration and marginal density of the restoration （P〈0.05）. Conclusions The clinical effects of both groups of Ag-Pd alloy PFM and IPS e.max Press Porcelain full crown is superior to the group of Co-Cr alloy PFM. The IPS e. max Press Porcelain full crown group works best.