Evaluation of Marginal Misfit of Implant-Supported Fixed Prostheses Made Using Different Techniques

To evaluate the vertical marginal (VM) and horizontal marginal (HM) misfit of frameworks made using different techniques. A total of 30 frameworks were divided into three groups of 10 samples each based on manufacturing technique: nichrome cast (G1), milled in zirconia (G2), and milled in wax and fu...

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Published inThe International journal of prosthodontics Vol. 32; no. 4; p. 345
Main Authors de Luna Gomes, Jéssica Marcela, Dantas de Moraes, Sandra Lúcia, Santiago Júnior, Joel Ferreira, Araujo Lemos, Cleidiel Aparecido, Grossi, Márcio Lima, Pellizzer, Eduardo Piza
Format Journal Article
LanguageEnglish
Published United States 01.07.2019
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Summary:To evaluate the vertical marginal (VM) and horizontal marginal (HM) misfit of frameworks made using different techniques. A total of 30 frameworks were divided into three groups of 10 samples each based on manufacturing technique: nichrome cast (G1), milled in zirconia (G2), and milled in wax and fused to metal (G3). Marginal misfit was measured using a three-dimensional optical microscope. The highest VM misfit was in G3 (83.5 μm), followed by G1 (55 μm) and G2 (42 μm). The highest HM misfit was in G2 (118 μm), followed by G3 (102 μm) and G1 (-85 μm). Frameworks milled in zirconia resulted in the lowest VM misfit, while frameworks filled in wax and fused to metal resulted in higher VM. The HM misfit was favorable in the lost-wax technique.
ISSN:1942-4426
DOI:10.11607/ijp.6073