title: Accuracy of an open-tray implant impression technique with 3 splinting materials: an in vitro study.
abstract: This study compared the accuracy of impressions using 3 types of splinting materials: a pattern acrylic resin (Group 1), an acrylic resin (Group 2), and a dual-cured composite resin (Group 3). A total of 60 impressions (n = 20) were made. Implant positions were compared against the master model using a coordinate measuring machine with ANOVA comparison (P = 0.05). The minimum and maximum differences in the x axis were found in Groups 2 and 3, respectively. For the y axis, Groups 2 and 1 showed the minimum and maximum differences, respectively. The minimum and maximum differences in the z axis were found in Groups 3 and 1, respectively. All differences in the axes were statistically significant (P < 0.05). These findings indicated that the composite resin demonstrated better accuracy than the other tested splinting materials.
authors.forename: Farshid Akbari
authors.initials: FA
authors.lastname: Kamrani
authors.forename: Amir Hossein
authors.initials: AH
authors.lastname: Namazi
authors.forename: Reza
authors.initials: R
authors.lastname: Hamedy
authors.forename: Pakhshan
authors.initials: P
authors.lastname: Ghadiri
mesh_terms: D000180:Acrylic Resins / Q000627:therapeutic use; D003188:Composite Resins / Q000627:therapeutic use; D003760:Dental Impression Materials / Q000627:therapeutic use*; D003761:Dental Impression Technique / Q000295:instrumentation; D006801:Humans; D066298:In Vitro Techniques
chemical_list: D000180:Acrylic Resins; D003188:Composite Resins; D003760:Dental Impression Materials
keywords: coordinate measuring machine; dimensional stability; implant impression; reproducibility of results; splinting technique