Transverse microhardness of artificial teeth

Authors

  • Regina Tamaki Department of Prosthodontics, School of Dentistry, University of Sao Paulo
  • Carolina Mayumi Iegami Department of Prosthodontics, School of Dentistry, University of Sao Paulo
  • Priscila Nakasone Uehara Department of Prosthodontics, School of Dentistry, University of Sao Paulo
  • Ricardo Jun Furuyama Department of Prosthodontics, School of Dentistry, University of Sao Paulo
  • Rafael Yague Ballester Department of Biomaterials and Oral Biochemistry, School of Dentistry, University of Sao Paulo

DOI:

https://doi.org/10.11606/issn.2357-8041.clrd.2015.122750

Keywords:

Artificial Tooth, Hardness, Acrylic Resins

Abstract

Objective: Hardness is an indicator of several mechanical properties of artificial teeth, also related to wear resistance. The purpose of this article is to map the microhardness of artificial teeth as a function of depth and commercial brand. Methods: Knoop microhardness of sectioned artificial second molars was measured every 200 µm starting at a depth of 100 µm up until 4700 µm of the following brands: Premium (Pr), Orthosit (Or), SR Postaris DCL (Po), Biotone (Bi), Artiplus IPN (Ar), VITA MFT (Vi), Natusdent (Na), Trilux (Tr), and Biolux (Bx). Results were analyzed with ANOVA for repeated measures and Tukey test (5%). Results: SR Orthosit PE commercial brand presented higher hardness values (until the depth of 3.1 mm was 30 N/mm2), significantly higher than the other brands analyzed. Conclusion: Knoop hardness did not present differences between layers for eight of the nine brands studied. Different hardness values were found between superficial and cervical areas for the brand SR Orthosit PE.

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Published

2015-12-31

Issue

Vol. 21 No. 4 (2015)

Section

Original Research

License

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How to Cite

Tamaki, R., Iegami, C. M., Uehara, P. N., Furuyama, R. J., & Ballester, R. Y. (2015). Transverse microhardness of artificial teeth. Clinical and Laboratorial Research in Dentistry, 21(4), 204-210. https://doi.org/10.11606/issn.2357-8041.clrd.2015.122750