THE FLEXURAL STRENGTH, SURFACE HARDNESS AND SURFACE ROUGHNESS OF 3D PRINTED DENTURE BASE MATERIAL


Şahinbaş A. , Burduroğlu H. D.

ICP & EPA JOINT MEETING, Amsterdam, Hollanda, 4 - 07 Eylül 2019

  • Basıldığı Şehir: Amsterdam
  • Basıldığı Ülke: Hollanda

Özet

Keywords: 3d printing, Denture base, Surface Roughness

Purpose/Aim: The aim of this study was to evaluate the flexural strength, surface hardness and surface roughness of denture base

materials, which has produced with different production methods.

Materials and Methods: Production methods to be used in this study are a conventional flasking method (Group C) N=8 and additive

manufacturing method (Group A) N=8. As an additive manufacturing method, Envisiontec Vida 3D printer and E-Denture 3D+ denture

base material (ENVISIONTEC GMBH Gladbeck, Germany) and as a conventional flasking method Meliodent® Heat Cure (Kulzer

GMBH Hanau, Germany) were used. Flexural strength was assessed with a three-point bending test using a universal testing machine

(Shimadzu AGS-X, Columbia, Maryland). Disk specimens were subjected to surface roughness test with a profilometer (MarSurf

M300C, Mahr GMBH Göttingen, Germany) and Vickers Hardness test (Shimadzu HMV, Columbia, Maryland) after finishing and

polishing procedures.

Results: Mean flexural strength of Group C is 69,8N ±8,2N and Group A is 57,2N ±1,17N. Mean Ra Values of Group C is 0,065

±0,027, and Group A is 0,051 ±0,02. Mean Vickers Hardness Values of Group C is 16,19 ± 0,078 and Group A is 9,9 ±0,82. For the

group comparisons, Mann Whitney U test was used (p<0,05). There are statistical differences between groups in Vickers Hardness

Values p=0,001, and in flexural strength values p=0,001. But there is no statistically differences in surface roughness levels between the

groups p=0,248.

Conclusions: Additive manufacturing methods can be used to produce denture bases, but further studies are needed to use this method

safely.