Volume 6 Issue 1 (January - February), 2020

Original Articles

Comparative evaluation of accuracy of different implant impression techniques
Suyashvi Gupta, Aman Sharma, Nayan Bhadada, Priyanka Rajpurohit, Keshav Raj Sharma, Naveen Pal Singh

Background: Dental implant in the alveolar bone is not surrounded by the periodontal ligament, and assembly of prosthesis over the implant yields a structure composed of prosthetic superstructure, implant fixture and bone as one unit. Aim of the study: To compare accuracy of different implant impression techniques. Materials and methods: The present study was conducted in the Department of Prosthodontics of the dental institutions. An edentulous mandibular cast with four implant analogues (5.6 mm) in the anterior region was used as the reference model. Two impression techniques were studied. Group I - Polyvinyl siloxane impressions (putty and light body) and Group II - Polyether impressions (medium body). Results: It was observed that impression in Group 2 was more superior as compared to Group 1 with open custom tray. With stock metal tray and closed custom tray, Group 1 impressions were more accurate. On comparing, the results were statistically non-significant. Conclusion: Within the limitations of the present study, it can be concluded that polyvinyl siloxane impressions were more accurate than polyether impressions when stock metal and closed custom trays were used. Polyether impressions made with open custom trays were more accurate when compared to polyvinyl siloxane impressions made with open custom trays. Keywords: Implant impressions, polyether impression, polyvinysiloxane

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