两种印模材料制取中性区全口义齿临床疗效的比较研究

A comparative study of the clinical efficacy of two impression materials for complete dentures in the neutral zone

目的:对比两种印模材料(金玛克藻酸盐、GC精彩注射A型硅橡胶)用于制作中性区全口义齿的临床疗效差异。方法:选取2021年1月~2022年10月就诊于川北医学院附属医院口腔科的无牙牙合患者20例作为研究对象,用两种印模材料按照中性区义齿制作的标准流程,为同一患者制作两幅中性区全口义齿,分别戴用4周,用视觉模拟评分法设计调查问卷,评价两种义齿的患者满意度和医生满意度差异,通过咀嚼效率检查比较两组义齿的修复效果。结果:两种中性区义齿的患者满意度较高,无统计学差异,但均高于旧义齿(P<0.05);两种中性区义齿的咀嚼效率吸光度值无统计学差异,也高于旧义齿(P<0.05);医师满意度调查中总体满意度、印模材料操作时间和中性区印模获取难度的满意度,硅橡胶组高于金玛克藻酸盐组(P<0.05),印模材料流动性、中性区印模制取效果的满意度结果差异不显著。结论:两种材料制作的中性区义齿临床效果佳,具有良好的应用前景。硅橡胶印模材料在中性区技术方面的应用更有优势,且操作简单,可进一步在临床上推广使用。

Objective:Comparison of the differences in clinical efficacy of two impression materials(Kingmac Alginate and Injectable A-type silicone rubber impressions)used to make complete dentures in the neutral zone.Methods:From January 2021 to October 2022,20 edentulous patients attending the Department of Dentistry of the Affiliated Hospital of Chuanbei Medical College were selected as the study subjects.Two neutral zone complete dentures were made for the same patient using two impression materials according to the standard procedure of neutral zone denture making and worn for 4 weeks, and a questionnaire was designed to evaluate the differences in patient satisfaction and physician satisfaction between the two denture materials using the visual simulation scoring method.Results:Patient satisfaction was higher for both neutral zone denture types, with no statistical difference, but both were higher than the old denture(P<0.05).The difference in masticatory efficiency absorbance values between the two neutral zone dentures was not significant, and was also higher than that of the old denture(P<0.05).In the satisfaction survey of physicians, the overall satisfaction, satisfaction with the handling time of the impression material and the difficulty of obtaining impressions in the neutral zone were higher in the silicone rubber group than in the gold-mark alginate group(P<0.05).There were no significant differences in the satisfaction results of the fluidity of impression materials and the effect of neutral zone impression making.Conclusion:The neutral zone denture made by the two materials has good clinical results and has good application prospects.Silicone rubber impression material has more advantages in neutral zone technology and is simple to operate, which can be further promoted in clinical use.