Evaluation of fracture strength and translucency of 3D printing resin crown for carious primary anterior tooth
10.11149/jkaoh.2023.47.1.40
- Author:
Young-Jun HAM
1
;
Joon-Haeng LEE
;
Jong-Su KIM
;
Jong-Bin KIM
;
Mi-Ran HAN
;
Ji-Sun SHIN
Author Information
1. Department of Pediatric Dentistry, College of Dentistry, Dankook University, Cheonan, Korea
- Publication Type:Original Article
- From:Journal of Korean Academy of Oral Health
2023;47(1):40-46
- CountryRepublic of Korea
- Language:English
-
Abstract:
Objectives:The purpose of this study was to compare the fracture strength and traslucency of 3D printing resin crowns according to different thicknesses.
Methods:Resin crowns were designed with CAD software and a 3D scanner, using scanned data of the #61 tooth model. Resin Crowns with different thicknesses were printed using a 3D printer, and subsequently divided into four groups according to thickness (0.3, 0.5, 0.7, and 1.0 mm). Fracture strength was compared among groups with a resin strip crown of 1.0 mm thickness. Compressive force was applied using a universal testing machine at 30° along the lingual surface at 1 mm/min cross head speed. For translucency evaluation, thin square specimens were printed of thicknesses 0.3, 0.5, 0.7, and 1.0 mm, and translucency was measured using a spectrophotometer.
Results:As a result of fracture strength measurement, fracture strength increased as thickness increased, and a significant difference was observed solely between thicknesses of 0.3 and 0.5 mm, and the thicknesses of 0.3 and 0.5 mm (P<0.05). Translucency decreased as thickness increased, and similarly, a significant difference was observed only between thicknesses of 0.3 and 0.5 mm and the thicknesses of 0.7 and 1.0 mm (P<0.05).
Conclusions:A 3D printing resin crown can be used as a clinical option for restoring a primary anterior tooth affected by caries.
