Accuracy of impression techniques for an implant-supported prosthesis

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dc.contributor.authorDel’Acqua, Marcelo Antonialli
dc.contributor.authorChávez, Alejandro Muñoz [UNESP]
dc.contributor.authorCompagnoni, Marco Antonio [UNESP]
dc.contributor.authorMollo, Francisco de Assis [UNESP]
dc.contributor.institutionAraraquara University Center-UNIARA
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T21:25:14Z
dc.date.available2022-04-28T21:25:14Z
dc.date.issued2010-01-01
dc.description.abstractPurpose: This in vitro study compared the dimensional accuracy of a stone index and of two impression techniques (squared impression copings and modified squared impression copings) for implantsupported prostheses. Materials and Methods: A master cast with four parallel implant-abutment analogs and a passive framework were fabricated. Vinyl polysiloxane impression material was used for all impressions with a metal stock tray. Three groups of impressions were tested (n = 5): index (I), squared (S), and modified squared (MS). The measurement method employed was just one titanium screw tightened to the framework. The measurements (60 gap values) were analyzed using software that received the images from a video camera coupled to a stereomicroscope at × 100 magnification. The results were evaluated statistically (analysis of variance, Holm-Sidak method, α = .05). Results: The mean abutment/framework interface gaps were: master cast = 31.63 µm; group I = 45.25 µm; group S = 96.14 µm; group MS = 51.20 µm. No significant difference was detected among the index and modified squared techniques (P = .05). Conclusion: Under the limitations of this study, the techniques modified squared and index generated more accurate casts than the squared technique. © 2010 by Quintessence Publishing Co Inc.en
dc.description.affiliationAraraquara University Center-UNIARA, Araraquara, São Paulo
dc.description.affiliationDepartment of Dental Materials and Prosthodontics Araraquara Dental School São Paulo State University, Araraquara, São Paulo
dc.description.affiliationUnespDepartment of Dental Materials and Prosthodontics Araraquara Dental School São Paulo State University, Araraquara, São Paulo
dc.format.extent715-721
dc.identifier.citationInternational Journal of Oral and Maxillofacial Implants, v. 25, n. 4, p. 715-721, 2010.
dc.identifier.issn0882-2786
dc.identifier.scopus2-s2.0-78049417009
dc.identifier.urihttp://hdl.handle.net/11449/226092
dc.language.isoeng
dc.relation.ispartofInternational Journal of Oral and Maxillofacial Implants
dc.sourceScopus
dc.subjectDental implants
dc.subjectDental impression technique
dc.subjectDental models
dc.titleAccuracy of impression techniques for an implant-supported prosthesisen
dc.typeArtigo

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