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In vitro comparison of one-step, two-step, and three-step polishing systems on the surface roughness and gloss of different resin composites.
Lippert, Vinícius Funghetto; Bresciani, Eduardo; Mota, Eduardo Gonçalves; Bittencourt, Hélio Radke; Kramer, Paulo Floriani; Spohr, Ana Maria.
Afiliação
  • Lippert VF; Department of Restorative Dentistry, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
  • Bresciani E; Department of Restorative Dentistry, School of Dentistry, São Paulo State University, São José dos Campos, Brazil.
  • Mota EG; Department of Restorative Dentistry, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
  • Bittencourt HR; Department of Statistics, Polytechnic School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
  • Kramer PF; Department of Restorative Dentistry, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
  • Spohr AM; Department of Restorative Dentistry, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil.
J Esthet Restor Dent ; 36(5): 785-795, 2024 May.
Article em En | MEDLINE | ID: mdl-38130085
ABSTRACT

OBJECTIVES:

This laboratory study evaluated the effect of three polishing systems on the surface roughness and gloss of resin composites. MATERIALS AND

METHODS:

Thirty specimens (6 mm Ø × 8 mm) were fabricated from each of three resin composites Z 350 XT (nanofill), Harmonize (nanohybrid), and Estelite Omega (supranonofill). All specimens were photopolymerized using a multi-peak LED curing unit (VALO-Standard mode), having a exitance irradiance of approximately 1000 mW/cm2 against a polyester strip (PS). 2 mm was then removed from the irradiated end (finished) using #320 abrasive paper (F). Specimens were then randomly polished (P) using a one-step (1S) (OneGloss), two-step (2S) (EVE Diacomp Twist Basic CA), or 3-step (3S) (Astropol P) system (n = 10). For PS, F, and P groups, surface roughness (Ra) was measured using a surface roughness tester, and surface gloss was measured with a glossmeter. For each specimen, the percent recovery to the PS value (%R) of surface roughness and surface gloss were calculated. Data were analyzed using two-way ANOVA, followed by Tukey's test. Surface roughness and gloss values were submitted to Pearson's correlation test (α = 0.05). All statistical testing was performed using a pre-set alpha of 0.05.

RESULTS:

The interaction term [resin composite × polishing system] was significant for both surface roughness (p = 0.001) and gloss (p = 0.0001). For all resin composites, the 2S and 3S systems provided a higher %R of surface roughness and gloss compared to those of the 1S system. There was a negative correlation between surface roughness and gloss, but only a few combinations showed strong correlations.

CONCLUSIONS:

The 2S and 3S polishing systems provided surfaces having greater smoothness and gloss compared to the 1S system. The ability to recover surface roughness and gloss was dependent on type of resin composite filler classification. CLINICAL

SIGNIFICANCE:

The 3S and 2S polishing systems were more effective in achieving PS values than was the 1S system for all tested resin composites. However, individual polishing systems performed differently depending on type of resin composite.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Resinas Compostas / Polimento Dentário Idioma: En Revista: J Esthet Restor Dent Assunto da revista: ODONTOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Resinas Compostas / Polimento Dentário Idioma: En Revista: J Esthet Restor Dent Assunto da revista: ODONTOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido