Comparison of Impression Accuracy at implant fixture level With Additional and Condensational Silicone impression materials with and without splinting

Abstract

The accuracy of implant molding depends on various factors. Among these, molding technique and molding materials are two important factors in the accuracy of implant molding. Due to the significant role of precision implantation in the success of implant treatments through the preparation of prostheses with high adaptation and no stress, and due to the high price of incremental silicone and the reasonable price of compression silicone in the country, the aim of this study was to compare the accuracy of implantation Implant with compression and incremental silion material with and without splint. Necessity of the project: Due to the unprecedented increase in the cost of incremental silicone material and also the unavailability of some molding materials whose quality was guaranteed, so we decided to compare the molding accuracy of incremental and compact silicone material with and without splint.

1) Determining and comparing the accuracy of implant fixture molding in incremental silicon molding with and without splint 2) Determining and comparing the accuracy of implant fixture molding in compression silicone molding with and without splint 3) Determining and comparing the molding accuracy of incremental and compression silicone materials with and without splints Materials and methods: In this experimental-laboratory study, a two-piece metal index was prepared which could be fastened by male and female and fixed to each other by 2 clamps. After complete set, each analog was numbered and the coupling impression corresponding to the analogs was fixed on them. Two analogues were prepared together without splinting and two analogues were prepared together with splinting. After preparing the molding, the distance between the outermost part of the analogues inside the gypsum cast was measured by drawing digital lines parallel to the transverse side of the index by digital caliper. Accuracy of performing molding in 4 subgroups (12 samples in each subgroup), 1. No splint with incremental silicone molding material 2. With splint with incremental silicone molding material 3. No splint with compression silicone molding material 4. With splint with molding material Compression silicone was compared. The results were analyzed by SPSS 24 statistical software and two-way ANOVA and one-sample T-test. Results: In this study, the accuracy of incremental silicon molding in splinted and non-splinted implants was 0.03 ± 0.03 and 0.05. 0.08, respectively. And with compression silicone molding material with and without splint were 0.02 ± 0.03, 0.06. 0.09, respectively. In both incremental and compression silicone molding materials, the accuracy of molding in splint method was higher than without splint (P = 0.001). Conclusion: The result of this study shows that the accuracy of molding incremental and compact silicones in the splint method is higher than the non-splint method. The effect of splint on molding accuracy was significant. In the method with splint, the molding accuracy is the same in compression silicon and incremental silicon, and in the method without splint, the molding accuracy is the same in incremental silicon and compression silicon.