The influence of disinfection on dimensional stability of temporary crowns

Authors

  • Paula Carolina Komori de Carvalho São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil. http://orcid.org/0000-0002-9411-5719
  • Sâmia Carolina Mota Sacourague São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.
  • Lais Medeiros Ribeiro de Almeida São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.
  • Estevão Tomomitsu Kimpara São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.
  • Tarcisio José de Arruda Paes-Junior São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.

DOI:

https://doi.org/10.14295/bds.2018.v21i3.1573

Abstract

Objective: Evaluate the influence of different disinfection methods on the dimensional stability of temporary acrylic resin crowns. Material and Methods: A metallic die with two different marks at the margin was used to prepare the specimens with two different resins (bis-acrylic resin-Structur, acrylic resin-Dencrilay). They were divided into eight groups (n=8), determined according to the disinfection methods (microwave, acetic acid, 1% hypochlorite) and control. The marginal adaptation was recorded using an optical microscope (50X) comparing two different marks on the margin of the crowns with 2 points along the entire circumferential margin before and after disinfection methods. Results: Results were compared statistically by ANOVA and Tukey's test (p?0.05). The two-way ANOVA showed statistical difference between types of materials. No significant differences were found between disinfection methods and interaction of factors. Conclusion: All procedures affected the marginal adaptation however temporary crowns made by bis-acrylic resin demonstrate higher dimensional stability.

Keywords

Dimensional stability; Disinfection; Temporary crowns.

Author Biographies

Paula Carolina Komori de Carvalho, São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.

Department of Dental Materials and Prosthodontics

Estevão Tomomitsu Kimpara, São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.

Department of Dental Materials and Prosthodontics

Tarcisio José de Arruda Paes-Junior, São Paulo State University (Unesp) – Institute of Science and Technology – São José dos Campos – Department of Dental Materials and Prosthodontics – SP – Brazil.

Department of Dental Materials and Prosthodontics

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Published

2018-08-01

Issue

Vol. 21 No. 3 (2018): Jul. - Sep. / 2018 - Published Aug 2018

Section

Clinical or Laboratorial Research