An In-Vitro Study to Evaluate the Effect of Denture Cleansing Agents on Color Stability of Denture Bases Fabricated Using CAD/CAM Milling, 3D-Printing and Conventional Techniques

Saurabh Jain,Aparna Aggarwal,Mohammed Sayed,Shankargouda Patil,Walaa Magdy Ahmed,Naif Mohammed Ahmed Najmi,Shilpa Bhandi,Amjad Hussain Asiri Halawi

doi:10.3390/coatings11080962

Abstract

The current literature lacks substantial information about the effect of denture cleansers on the color stability of denture bases formed using Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) additive and CAD/CAM subtractive manufacturing techniques. This study aimed to assess the effect of two commercially available denture cleansers on the color stability of denture base resins fabricated using four different techniques. Forty-five disc-shaped specimens were fabricated using each technique. Initial color readings were recorded. Specimens were randomly divided into three subgroups (n = 15): a control group (distilled water) and two denture cleanser groups. They were immersed in these solutions, simulating 180 days of use. Final color readings were recorded. The color difference was calculated, and the data were statistically analyzed. For all the specimens, significant color changes were observed after immersion in denture cleanser solutions. The extent of color change varied according to the type of denture cleanser used. When placed in the denture cleanser solutions, the CAD/CAM subtractive group showed the maximum color change (−1.10 and −0.72), while the CAD/CAM additive (3D printing) groups showed the least color change (−0.48 and −0.54). Clinicians should choose appropriate denture cleansers for newly introduced denture base resins to minimize the changes in the color of the dentures.

Highlights

This study analyzed the effects of denture cleansers on the color stability of four denture base resins fabricated using different techniques
There was a significant change in color in all the denture base resins fabricated using different techniques after immersion in denture cleanser solutions
The ∆E00 values were far below the clinically acceptable range for all four denture base resins; Both the Polident and Fixodent denture cleansers gave rise to the highest ∆E00 values for the Computer-Aided Design/Computer-Aided Manufacturing (CAD/Computer-Aided Machining (CAM)) milled denture base resins; The Computer-Aided Design (CAD)/CAM additive (3D printed) denture base resins showed the lowest ∆E00 values when immersed in the Polident denture cleanser, and the second-lowest values when immersed in the Fixodent denture cleanser; 4

Summary

Introduction

The removable dental prosthesis is a significant treatment option for replacing missing teeth in patients above 65 years old [1]. With the digitalization and advancements in material science, many new techniques and clinical protocols for fabricating dentures have evolved [2,3]. Computer-Aided Design (CAD) and Computer-Aided Machining (CAM). Have revolutionized the approach to fabricating removable dental prostheses (RDP). The subtractive milling technique uses pre-polymerized polymethyl methacrylate (PMMA)

Objectives

Methods

Discussion

Conclusion