ŞÜKRİYE ECE DOĞAN, GAYE SAĞLAM, DAĞLAR AKSAKAL, ENES KORKMAZ
Journal of Health Sciences and Medicine - 2025;8(4):656-662
Aims: This study aimed to the investigate the effect of different cleaning methods on the surface roughness of conventional polymethyl methacrylate (PMMA) and three-dimensional printed (3D) acrylic resin material. Methods: Eighty disc-shaped specimens of conventional PMMA and 3D-printed resin were prepared and divided into four subgroups based on cleaning methods. The specimens of the control group (group C) were immersed in distilled water, the second group (group T) was immersed in Corega tablet solution. The third group (group B) was subjected with liquid soap in a toothbrush simulator. The specimens in the fourth group (group BT) were brushed in the same way with liquid soap and immersed in Corega tablet solution. Surface roughness (Ra) was measured before and after cleaning, using a contact profilometer. Surface morphology was evaluated by scanning electron microscopy (SEM). Kolmogorov-Smirnov, repeated-measures ANOVA, and post-hoc tests were done to analyze the data (p<0.05). Results: Initial surface roughness values were not significantly differed between PMMA and 3D-printed resins. After cleaning, the highest roughness was observed in group BT (PMMA: 0.25 µm; 3D resin: 0.21 µm), and the lowest in group C (PMMA: 0.15 µm; 3D resin: 0.12 µm). Brushing alone or in combination significantly increased surface roughness for both materials (p<0.001). There was no statistically significant difference among the material groups for each type of cleaning procedure. Conclusion: The surface roughness of denture bases are affected by different cleaning procedures. Brushing alone had a greater abrasive effect than tablet immersion. Although surface roughness increased within groups, no significant differences were found among the materials. Clinical recommendations should consider that denture cleaning methods may influence the surface integrity of the prosthesis.
