Effects of polishing procedures on optical parameters and surface roughness of composite resins with different viscosities

Effects of polishing procedures on optical parameters and surface roughness of composite resins with different viscosities

The aims of this study were to evaluate the optical properties of flowable and injectable composites after polishing, such as translucency (translucency parameter [TP], TP00), opalescence (OP-BW), chroma (C*ab), refractive index (RI), and change in surface roughness (Ra, Rz). Ninety disc-shaped samp...

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Bibliographic Details
Published in:Dental Materials Journal Vol. 42; no. 2; pp. 199 - 210
Main Authors: DEGIRMENCI, Alperen, PEHLIVAN, Ikbal Esra, DEGIRMENCI, Beyza UNALAN
Format: Journal Article
Language:English
Published: Japan The Japanese Society for Dental Materials and Devices 25-03-2023
Japan Science and Technology Agency
Subjects:
Composite materials
Composite Resins
Dental Polishing - methods
Materials Testing
Opalescence
Optical measurement
Optical properties
Parameters
Polishing
Refractive index
Refractivity
Resins
Statistical analysis
Statistical models
Surface Properties
Surface roughness
Translucency
Two dimensional analysis
Variance analysis
Viscosity
Opalescence
Surface roughness
Composite resins
Refractive index
Translucency
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Summary:The aims of this study were to evaluate the optical properties of flowable and injectable composites after polishing, such as translucency (translucency parameter [TP], TP00), opalescence (OP-BW), chroma (C*ab), refractive index (RI), and change in surface roughness (Ra, Rz). Ninety disc-shaped samples were prepared from micro-hybrid, flowable, and injectable composites and divided into 3 groups according to the polishing systems (n=10). The RI was measured with an Abbe refractometer, and optical measurements were performed with a spectrophotometer. The surface roughness was measured with a two-dimensional profilometer. Data were analyzed with the generalized linear model method and two-way analysis of variance. The results showed that the polishing procedure did not significantly impact the RI (p=0.987). Injectable composite had the highest translucency (TP=28.67; TP00=13.49) and opalescence (OP-BW=13.11); showed the lowest C*ab value (17.95). Also, the effects of the composite type and polishing procedure on surface roughness were statistically significant (p=0.047 and p<0.001).
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content type line 23
ISSN:0287-4547
1881-1361
DOI:10.4012/dmj.2022-178