18 40

Cited 0 times in

Flexural Strength of 3D-Printing Resin Materials for Provisional Fixed Dental Prostheses

Authors
 Sang-Mo Park  ;  Ji-Man Park  ;  Seong-Kyun Kim  ;  Seong-Joo Heo  ;  Jai-Young Koak 
Citation
 MATERIALS, Vol.13(18) : 3970, 2020-09 
Journal Title
 MATERIALS 
Issue Date
2020-09
Keywords
3D printing ; additive manufacturing ; flexural strength ; three-unit resin prosthesis
Abstract
The clinical application of 3D-printed provisional restorations is increasing due to expansion of intraoral scanners, easy dental computer-aided design (CAD) software, and improved 3D printing speed. This study compared flexural strength of 3D-printed three-unit fixed dental prostheses with that of conventionally fabricated and milled restorations. A metal jig of two abutments and pontic space and an indenter for flexural strength measurement were fabricated. A three-unit fixed dental prosthesis was designed and manufactured using three additive manufacturing technologies, with subtractive manufacturing and a conventional method as controls. Digital light processing (DLP) group specimens were prepared from a polymethyl methacrylate (PMMA)-based resin and printed with a DLP printer. Stereolithography (SLA) group specimens were prepared from PMMA-based resin and printed with an SLA printer, and fused deposition modeling (FDM) group specimens were from a polylactic acid-based resin and printed with an FDM printer. Flexural strength was investigated using a universal testing machine, and the results were statistically analyzed. DLP and SLA groups had significantly higher flexural strength than the conventional group (p < 0.001). No significant difference was observed in flexural strength between DLP and SLA groups. The FDM group showed only dents but no fracture. The results of this study suggest that provisional restorations fabricated by DLP and SLA technologies provide adequate flexural strength for dental use.
Files in This Item:
T202004613.pdf Download
DOI
10.3390/ma13183970
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실) > 1. Journal Papers
Yonsei Authors
Park, Ji-Man(박지만) ORCID logo https://orcid.org/0000-0003-0018-1166
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/180341
사서에게 알리기
  feedback

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse

Links