J Korean Acad Oral Health.  2024 Dec;48(4):169-176. 10.11149/jkaoh.2024.48.4.169.

Comparison of wear on the surfaces of denture base resins based on the type and application angle of ultrasonic scaler tips

• Kang ES

• KMID: 2563403
• DOI: http://doi.org/10.11149/jkaoh.2024.48.4.169

Abstract

Objectives
This study aimed to evaluate the effect of different types and angulations of ultrasonic scaler tips on the surfaces of denture base resins.
Methods
Heat-polymerized and computer-aided design/computer-aided manufacturing (CAD/CAM) denture base resin specimens were manufactured in rectangular shapes (60×10×3 mm) and divided into four groups. Stainless-steel and carbon scaler tips were applied at angles of 0° and 45° with 100 g of weight for 60 seconds, and the depth and volume of the surface defects were compared.
Results
Stainless-steel tips with a 45° angle showed a larger defect depth and volume than stainless-steel tips with a 0° angle and carbon tips with a 0° angle (P<0.001). No result was observed when using carbon tips with a 45° angle because the scaler tip broke during the experiment. No significant differences were observed between the heat-cured and CAD/CAM resins at 0° angles.
Conclusions
Within the limits of this study, as the angle of the scaler tip increased, the depth and volume of the defect increased. And, when the angle was 0°, no significant differences were observed between the effects of the stainless-steel and carbon tips.

Keyword

Abrasion; Denture base; Scaling; Ultrasonic