Influence of illuminants and different observers on the perception of surface gloss of resin composite

Authors

  • Fernanda Bastos Pereira Tessarin São Paulo State University (Unesp) – Institute of Science and Technology, São José dos Campos – Department of Restorative Dentistry – SP – Brazil. http://orcid.org/0000-0002-8344-3741
  • Laura Célia Fernandes Meirelles São Paulo State University (Unesp) – Institute of Science and Technology, São José dos Campos – Department of Restorative Dentistry – SP – Brazil. http://orcid.org/0000-0001-8820-4283
  • Rafael Santos Rocha São Paulo State University (Unesp) – Institute of Science and Technology, São José dos Campos – Department of Restorative Dentistry – SP – Brazil. http://orcid.org/0000-0002-8794-2716
  • Taciana Marco Ferraz Caneppele São Paulo State University (Unesp) – Institute of Science and Technology, São José dos Campos – Department of Restorative Dentistry – SP – Brazil. http://orcid.org/0000-0003-0521-7922
  • Eduardo Bresciani São Paulo State University (Unesp) – Institute of Science and Technology, São José dos Campos – Department of Restorative Dentistry – SP – Brazil. http://orcid.org/0000-0003-1665-5733

DOI:

https://doi.org/10.14295/bds.2018.v21i4.1648

Abstract

Objective: To evaluate the visual perception of surface gloss of resin composite under different illuminants by different observers. Material and methods: twelve cylindrical specimens (6mm x 1mm) were fabricated using a nanofilled resin composite (Z350, A2E shade) in order to compare different observers and to determine the limit of perceptibility of surface gloss. Bovine tooth specimen with similar dimensions was obtained for the comparison of different illuminants. Polishing of resin specimens was performed resulting in 6 groups, presenting surface gloss values at 10, 25, 40, 55, 70, and 85 GU (gloss units), measured by glossmeter (NOVOCURVE). Fifteen individuals were selected: 5 lay-person, 5 undergraduate students, and 5 dental professionals. Participants observed the specimens in a light booth (Gti lightbox) under three different illuminants, and rated the possible combinations between resin specimens or with the bovine enamel specimen (85GU). Data obtained were analyzed by PROBIT non-linear regression analysis (?=0.05). Results: Differences were observed among types of illuminants (p=0.042) and ?GU (p=0.004), with no interaction between factors (p=0.139). The fluorescent light presented lower surface gloss perceptibility values in relation to incandescent light. There was no influence by type of observers (p =0.598). The surface gloss perception limit was 17.6 GU under the presented tested conditions. Conclusion: the illuminant type influenced perception of gloss, with lower percentage of perceptibility for fluorescent light, while such perceptibility was not influence by different observers.

Keywords

 Illuminants; Observer variation; Composite resins; Surface gloss.

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Author Biography

Fernanda Bastos Pereira Tessarin, São Paulo State University (Unesp) – Institute of Science and Technology, São José dos Campos – Department of Restorative Dentistry – SP – Brazil.

 

Departamento De Odonto Restauradora

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Published

2018-10-24

How to Cite

1.
Tessarin FBP, Meirelles LCF, Rocha RS, Caneppele TMF, Bresciani E. Influence of illuminants and different observers on the perception of surface gloss of resin composite. BDS [Internet]. 2018 Oct. 24 [cited 2025 Aug. 21];21(4):451-60. Available from: https://bds.ict.unesp.br/index.php/cob/article/view/1648

Issue

Vol. 21 No. 4 (2018): Oct. - Dec. / 2018 - Published October 2018

Section

Clinical or Laboratorial Research

License

Brazilian Dental Science uses the Creative Commons (CC-BY 4.0) license, thus preserving the integrity of articles in an open access environment. The journal allows the author to retain publishing rights without restrictions.

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