Effect of different surface treatments on the ceramic veneer surface: morphological analysis

Authors

  • Karen Cristina Archangelo São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.
  • Tabata Prado Sato São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.
  • Marcela Moreira Penteado São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.
  • Edwin Fernando Ruiz Contreras Londrina State University – Londrina – Brazil.
  • Alexandre Luiz Souto Borges São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.
  • Giovani de Oliveira Corrêa Londrina State University – Londrina – Brazil.

DOI:

https://doi.org/10.14295/bds.2018.v21i1.1533

Abstract

Objective: The aim of this study was to evaluate the effect of different surface clinical treatments on the roughness (Ra) of a lithium disilicate ceramic veneer. Material and Methods: Forty-eight lithium disilicate discs with ceramic veneer and glaze layer were manufactured and distributed into six groups (n=8) according to the surface treatment performed: G1, glaze layer (control group); G2, diamond bur 4138F; G3, diamond bur 4138F + 4138FF; G4, diamond bur 4138F + new glaze layer; G5, diamond bur 4138F + ceramic polishing kit; G6, diamond bur 4138F + rubber cup with diamond paste + felt with diamond paste. Surface Ra measurement (µm) was performed using a profilometer before and after surface treatments, and one specimen from each group was subjected to Scanning Electron Microscopy (SEM) after treatment. Two-way ANOVA and Tukey's test (5%) were used for data analysis. Results: Group 2 (3,00 ± 0,61)b showed higher values of Ra, followed by Group 3 (1,93 ± 0,45)c, Group 6 (1,56 ± 0,22)ac, Group 5 (1,14 ± 0,68)a and Group 4 (0,90 ± 0,26)a. G4, G5 and G6 were not different between each other and control group (1,11 ± 0,21)a. SEM imaging revealed surface smoothness in G1, G4 and G5, and presence of irregularities in G2, G3 and G6. Conclusion: it is possible to conclude that different surface clinical treatments influences the roughness of a lithium disilicate ceramic veneer.

 

Keywords: Ceramics; Dental porcelain; Dental polishing.

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Published

2018-03-28

Issue

Vol. 21 No. 1 (2018): Jan. - Mar. / 2018 - Published March 2018

Section

Clinical or Laboratorial Research

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All manuscript's copyright ownership of the article "____________________________________________________________________" is transferred from the author(s) to the BRAZILIAN DENTAL SCIENCE, in the event the work is published. The manuscript has not been published elsewhere and that it has not been submitted simultaneously for publication elsewhere.

We hereby attest the study is original and does not present manipulated data, fraud or plagiarism. We made significant scientific contribution to the study and we are aware of the presented data and in agreement with the final version of the manuscript. We assume complete responsibility for the ethical aspects of the study.

 

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