# Comparative Evaluation of the Effect of Brushing Simulation on the Surface Roughness of Acrylic- and Silicone-Based Soft Liners Using Two Different Commercially Available Denture Cleansers: An In Vitro Study

## TL;DR

This study compares how brushing with denture cleansers affects the surface roughness of two types of soft denture liners in a lab setting.

## Contribution

The study introduces a novel in vitro comparison of surface roughness changes in acrylic- and silicone-based soft liners using two commercial denture cleansers.

## Key findings

- Brushing simulation significantly increased surface roughness in both liner types.
- Silicone-based liners showed better resistance to surface deterioration than acrylic-based liners.

## Abstract

Objective

This present in vitro study evaluates the impact of brushing simulation on the surface roughness of acrylic-based and silicone-based soft denture liners following immersion in two different denture cleansing solutions.

Materials and methods

Specimens of silicone-based and acrylic-based soft liners were fabricated and subjected to a standardized brushing simulation protocol. Soft liners were suspended into the standard template of 40 mm x 15 mm x 10 mm dimensions. Two denture cleansers were employed during simulated brushing. The first group was brushed with Stim Clanden denture cleanser, and the second group with Clinsodent denture cleaning powder. Surface roughness (Ra and Rz values) was recorded before and after the simulation using a profilometer. Data were statistically evaluated using Mann-Whitney U and Kruskal-Wallis tests to determine significant differences.

Results

A statistically marked increase in surface roughness was noted in both liner types after brushing simulation. Silicone-based liners exhibited comparatively better resistance to surface deterioration than acrylic-based liners.

Conclusion

Brushing simulation with denture cleansers impacts the surface roughness of soft liners, with acrylic-based liners being more susceptible to surface damage. Silicon-based soft liners proved to be effective and more resistant to surface damage.