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Surface roughness analysis of prepolymerized CAD/CAM dental acrylic resins following combined surface treatments Cover

Surface roughness analysis of prepolymerized CAD/CAM dental acrylic resins following combined surface treatments

Materials Science-Poland
Volume 39 (2021): Issue 2 (June 2021)
By: ,  ,  ,  ,  ,  ,   and    
Open Access
|Oct 2021
Figures & tables

Figures & Tables

Fig. 1

(A) Prepared specimen; (B) power brush stabilized in the stand. CAD/CAM, computer-aided design/computer-aided manufacturing.

Table 1

Two-way repeated-measures ANOVA results for the interactions between resin type and disinfectants on the roughness values.

SourceType III SS*DFMSF-valuep-value
Corrected model145.99818.2418.450.000*
Intercept235.611235.61238.280.000*
Resin104.22252.1152.700.000*
Disinfectants15.6327.817.900.001*
Resins×Disinfectants26.1346.536.600.000*
Error80.09810.98
Total461.7090

* Type III SS infers a significant effect and interaction of the resin type and disinfectants on the surface roughness.

F-value = variation between sample means/variation within the samples; p-value = probability value.

* Statistically significant at p ≤ 0.05.

ANOVA, analysis of variance; DF, degrees of freedom (N-1); MS, mean square computed by dividing an SS value by the corresponding DFs; SS, sum of squares.

Table 2

Mean surface roughness (Ra, μm) of the acrylic resins at baseline.

Acrylic resinsNMean ± SDp-value
HC300.24 ± 0.06<0.001*
CAD/CAM300.03 ± 0.02
LC300.17 ± 0.03

* Indicates statistically significant difference between the resin groups.

CAD/CAM, computer-aided design/computer-aided manufacturing; HC, heat-cured resin; LC, light-cured resin; Ra, average arithmetic height; SD, standard deviation.

Fig. 2

Mean surface roughness of the acrylic resins at baseline and following surface treatments. Different lower case letters within the material groups indicate statistically significant differences (p<0.001) between the materials for the disinfectant used. CAD/CAM, computer-aided design/computer-aided manufacturing; CHG, chlorhexidine gluconate; HC, heat-cured resin; LC, light-cured resin; RT, roughness threshold (0.2 μm).

Table 3

Pairwise comparison of the final surface roughness for the acrylic resins and disinfectants tested.

Group (I)Comparison group (J)Mean difference (I–J)p-value
Acrylic resins
HCCAD/CAM2.610.000*
LC1.610.000*
CAD/CAMHC−2.610.000*
LC−0.990.001*
LCHC−1.610.000*
CAD/CAM0.990.001*
Disinfectants
CoregaNaOCl0.410.328
CHG−0.600.066
NaOClCorega−0.410.328
CHG−1.010.000*
CHGCorega0.600.066
NaOCl1.010.000*

* Statistically significant (p≤0.05).

CAD/CAM, computer-aided design/computer-aided manufacturing; CHG, chlorhexidine gluconate; HC, heat-cured resin; LC, light-cured resin.

Fig. 3

Surface roughness images of the specimens at baseline and following various surface treatments. CAD/CAM, computer-aided design/computer-aided manufacturing; CHG, chlorhexidine gluconate; HC, heat-cured resin; LC, light-cured resin.

DOI: https://doi.org/10.2478/msp-2021-0018 | Journal eISSN: 2083-134X (formerly 2083-124X) | Journal ISSN: 2083-1331
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Language: English
Page range: 209 - 218
Submitted on: May 3, 2021
Accepted on: Aug 17, 2021
Published on: Oct 14, 2021
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Keywords:
polymethylmethacrylate,
CAD/CAM technologies,
acrylic resins,
disinfectants,
roughness
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2021 Afnan Alfouzan, Alhanouf Alnouwaisar, Njood Alazzam, Hanan AL-Otaibi, Nawaf Labban, Mashaal Alswaidan, Sara AL-Taweel, Huda Alshehri, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 39 (2021): Issue 2 (June 2021)
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