Comparison of the Accuracy of Plastic and Metal Stock Trays for Implant Impressions

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dc.contributor.authorDel'Acqua, Marcelo Antonialli
dc.contributor.authorde Avila, Erica Dorigatti [UNESP]
dc.contributor.authorChagas Amaral, Angela Libia
dc.contributor.authorPereira Pinelli, Ligia Antunes [UNESP]
dc.contributor.authorMollo Junior, Francisco de Assis [UNESP]
dc.contributor.institutionCtr Univ Araraquara
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:46:39Z
dc.date.available2014-05-20T13:46:39Z
dc.date.issued2012-05-01
dc.description.abstractPurpose: This in vitro study evaluated the dimensional accuracy of two impression techniques (tapered and splinted) with two stock trays (plastic and metal) for implant-supported prostheses. Materials and Methods: A master cast with four parallel abutment analogs and a passive framework were fabricated. Polyvinyl siloxane impression material was used for all impressions with two metal stock trays and two plastic stock trays (closed and open trays). Four groups (tapered plastic, splinted plastic, tapered metal, and splinted metal) and a control group (master cast) were tested (n = 5 for each group). After the framework was seated on each of the casts, one abutment screw was tightened, and the marginal gap between the abutment and framework on the other side was measured with a stereomicroscope. The measurements were analyzed with the Kruskal-Wallis one-way analysis of variance on ranks test followed by the Dunn method. Results: The mean values (+/- standard deviations) for the abutment/framework interface gaps were: master cast, 32 +/- 2 mu m; tapered metal, 44 +/- 10 mu m; splinted metal, 69 +/- 28 mu m; tapered plastic, 164 +/- 58 mu m; splinted plastic, 128 +/- 47 mu m. No significant difference was detected between the master cast, tapered metal, and splinted metal groups or between the tapered and splinted plastic groups. Conclusions: In this study, the rigidity of the metal stock tray ensured better results than the plastic stock tray for implant impressions with a high-viscosity impression material (putty). Statistically similar results were obtained using tapered impression copings and splinted squared impression copings. The tapered impression copings technique and splinted squared impression copings technique with a metal stock tray produced precise casts with no statistically significant difference in interface gaps compared to the master cast. INT J ORAL MAXILLOFAC IMPLANTS 2012;27:544-550.en
dc.description.affiliationCtr Univ Araraquara, São Paulo, Brazil
dc.description.affiliationSão Paulo State Univ, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, São Paulo, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, São Paulo, Brazil
dc.format.extent544-550
dc.identifierhttp://www.quintpub.com/journals/omi/abstract.php?article_id=12162#.Ui9kKsbks_Y
dc.identifier.citationInternational Journal of Oral & Maxillofacial Implants. Hanover Park: Quintessence Publishing Co Inc, v. 27, n. 3, p. 544-550, 2012.
dc.identifier.issn0882-2786
dc.identifier.lattes0455968557454133
dc.identifier.urihttp://hdl.handle.net/11449/16526
dc.identifier.wosWOS:000305203300007
dc.language.isoeng
dc.publisherQuintessence Publishing Co Inc
dc.relation.ispartofInternational Journal of Oral & Maxillofacial Implants
dc.relation.ispartofjcr1.699
dc.relation.ispartofsjr1,576
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectclosed trayen
dc.subjectimplant impression accuracyen
dc.subjectopen trayen
dc.subjectsplinted squared impression copingen
dc.subjectstock trayen
dc.subjecttapered impression copingen
dc.titleComparison of the Accuracy of Plastic and Metal Stock Trays for Implant Impressionsen
dc.typeArtigo
dcterms.licensehttp://www.quintpub.com/journals/jop/orderreprints.php
dcterms.rightsHolderQuintessence Publishing Co Inc
unesp.author.lattes0455968557454133
unesp.author.orcid0000-0001-8753-2074[4]
unesp.author.orcid0000-0003-0742-2145[5]
unesp.author.orcid0000-0001-6681-1269[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araraquarapt

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