Verification jig for implant-supported prostheses: A comparison of standard impressions with verification jigs made of different materials

Cruz, Jorge E. De La; Funkenbusch, Paul D.; Ercoli, Carlo; Moss, Mark E.; Graser, Gerald N.; Tallents, Ross H.

doi:10.1067/mpr.2002.128070

Cited by 77 publications

(57 citation statements)

References 31 publications

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“…The observations of Burawi et al 5 , De La Cruz et al 6 , Gomes et al 7 and Faria 8 were in agreement with regard to the molding techniques and materials, where they represent important variables for obtaining the degree of accuracy bet ween the various components. In the study carried out by Assunção et al 9 , it was found that "the under standing of the positioning of the implants is important for a passive seating of the superstructure on top of them, without interference between prosthesis and components", slightly different to Neves et al 10 where it is reported that "due to anatomical limitations, many authors have considered implant angles of up to (CA) and the group that demonstrated the poorest results was the one that used the closed tray and condensation silicone, since the moldings in this group had to be repeated several times as the master rod did not permita fitting to the models obtained.…”

Section: Discussionsupporting

confidence: 69%

Different materials and techniques for accurate molding for adaptation in angled implants

Leandro

Brito

Teixeira

et al. 2014

RGO, Rev. Gaúch. Odontol.

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Objective To evaluate the marginal misfit between intermediate and micro-unitmetal cylinder, by varying the angle of the implants, using two different types of material and different molding techniques. Methods A model was made with three implants (one perpendicular to the horizontal plane and two inclined) using micro-unit intermediates. A rod attached to the master model served as a control condition to evaluate the suitability of the twenty specimens, carried out with the help of an optical stereomicroscope (Pantec, Brazil; Materials Testing Laboratory, São Leopoldo Mandic, Campinas, São Paulo). Results Evaluator reliability was assessed using theIntraclass Correlation RESUMO ObjetivoAvaliar a desadaptação marginal entre intermediário micro-unit e cilindro metálicos, variando a angulação dos implantes, com dois tipos de materiais e diferentes técnicas de moldagem. MétodoModelo com três implantes (um perpendicular ao plano horizontal e dois inclinados) usando intermediários micro-units. Uma barra mestre acoplada ao modelo serviu de situação controle para avaliar a adaptação dos vinte corpos de prova, feitas com estereomicroscópio óptico. ResultadosA confiabilidade do avaliador foi avaliada com Índice de Correlação Intraclasse, obtendo 99,6% (ótimo). Houve diferença estatisticamente significante entre os grupos, e com o teste Mann-Whitney comparou-se os grupos aos pares para um resultado mais preciso. ConclusãoO grupo que apresentou melhor comportamento foi o de tray aberta e silicone por condensação. O de pior resultado, que foi preciso ser moldado diversas vezes, foi o de tray fechada e silicone por condensação.Termos de indexação: Adaptação. Implantação dentária. Modelos anatômicos. while the implants at the ends were set at an angle of 15º in relation to the center implant. Intermediate implants of the micro-unit type, with a height of 1 mm and torque of 20 N.cm, were installed on top of these implants. A rod with a circular cross-section was waxed in order to join the cylinders to the micro-unit, wrought in Cobalt-Chrome and joined to the cylinders using laser welding, with the aim of obtaining maximum passivity and the adaptation of this superstructure to the master model. Different materials and techniques for accurate molding for adaptation in angled implantsThe study consisted of 4 sample groups: 1) Group AF -Molding through the closed tray technique using addition silicone (Elite HD, Zhermack, Italy); 2) Group AA -Molding through the open tray technique using addition silicone (Elite HD -Zhermack); 3) Group CF -Molding through the closed tray technique using condensation silicone (Zetaflow -Zhermack); 4) Group CA -Molding through the open tray technique using condensation silicone (Zetaflow -Zhermack).In order to fabricate the individual trays, a small plaster model was made with the following dimensions: (H-2 cm; W-3.5 cm; D -2 cm). Using acrylic plates 2 cm thick we obtained 20 trays, 10 of which were open and 10 closed.Replicas of the micro-units were screwed to 60 transfer impressions on...

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Section: Discussionsupporting

confidence: 69%

Different materials and techniques for accurate molding for adaptation in angled implants

Leandro

Brito

Teixeira

et al. 2014

RGO, Rev. Gaúch. Odontol.

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“…26,[28][29][30] Furthermore, some authors found that the indirect impression technique produced a more accurate master cast than pick-up impression techniques. 26,30,31 Of the impression materials that have been investigated, polyether and addition-cured silicone (polyvinyl siloxane) resulted in the most accurate casts. 11,24,28,[32][33][34] The previously referenced studies have generally used experimental designs in which all of the implants were placed parallel to each other and at the same apico-coronal level.…”

mentioning

confidence: 99%

Accuracy of Definitive Casts Using 4 Implant-Level Impression Techniques in a Scenario of Multi-Implant System With Different Implant Angulations and Subgingival Alignment Levels

et al. 2013

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PURPOSE: To evaluate the effect of various implant-level impression techniques on the accuracy of definitive casts for a multiple internal connection implant system with different implant angulations and subgingival depths. MATERIAL AND METHODS: Six tapered Screw-Vent implants were placed in a reference model with different angles (0, 15, and 30 degrees) and subgingival positions (0, 1, and 3 mm). Twenty medium-consistency polyether impressions of this model were made with 4 techniques (n = 5 per group): (1) indirect technique, (2) unsplinted direct technique, (3) acrylic resin-splinted direct technique, and (4) metal-splinted direct technique. Impressions were poured with type IV dental stone. The interimplant distances were measured for casts using a coordinate measuring machine and the deviations compared with the reference model were calculated. Data were analyzed using intraclass correlation coefficient, ANOVA and Bonferroni test ( = 0.05). RESULTS: Four impression procedures showed significant differences (P = 0.0001). Only group 4 casts showed no significant differences in comparison with the reference model (P = 0.666) (ANOVA repeated measures). CONCLUSIONS: The impression procedure affected the accuracy of definitive casts. The metal-splinted direct technique produced the most accurate casts, followed by acrylic resin-splinted direct, indirect, and unsplinted direct techniques. ABSTRACT (199 words)Purpose To evaluate the effect of four implant-level impression techniques on the accuracy of

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“…24 oraz De La Cruz i wsp. 25 opisują metodę zamkniętą jako dokład-niejszą. Z drugiej strony Vigolo i wsp.…”

Section: T Niedźwiedzki I Inniunclassified

Current methods and techniques of implant impressions: A literature review

Niedźwiecki¹,

Gajdus²,

Piosik³

et al. 2015

Protet Stomatol

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Verification jig for implant-supported prostheses: A comparison of standard impressions with verification jigs made of different materials

Cited by 77 publications

References 31 publications

Different materials and techniques for accurate molding for adaptation in angled implants

Different materials and techniques for accurate molding for adaptation in angled implants

Accuracy of Definitive Casts Using 4 Implant-Level Impression Techniques in a Scenario of Multi-Implant System With Different Implant Angulations and Subgingival Alignment Levels

Current methods and techniques of implant impressions: A literature review

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