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Open AccessFeature PaperArticle

Effect of Fabrication Method on Fracture Strength of Provisional Implant-Supported Fixed Dental Prostheses

1
Department of Restorative Dentistry and Biomaterial Sciences, 188 Longwood Avenue, Harvard School of Dental Medicine, Boston, MA 02120, USA
2
Department of Oral Medicine, Infection and Immunity, 188 Longwood Avenue, Harvard School of Dental Medicine, Boston, MA 02120, USA
*
Author to whom correspondence should be addressed.
Received: 30 September 2020 / Revised: 27 October 2020 / Accepted: 1 November 2020 / Published: 4 November 2020
There has been an increase in utilizing 3D printers in dental restorations. The purpose of the study is to compare mechanical properties of 3D-printed prostheses to those of self-cured and/or computer-aided design-computer-aided manufacturing (CAD-CAM) restorations. A metal master typodont was prepared for the mandibular left sextant with implant analogs embedded at the first premolar and first molar positions with a missing second premolar. Three-unit provisional fixed dental prosthesis (FDP) was designed utilizing the 3Shape tooth library and forty-five uniform specimens were fabricated with different materials: self-cured poly(methyl methacrylate) (PMMA) (N = 15), milled PMMA CAD-CAM blocks (N = 15) and 3D-printed resin (N = 15). All specimens were tested using an Instron machine at a crosshead speed of 0.5 mm/min by an axial load on the occlusal surface of the second premolar pontic site. Statistical analysis was completed with Shapiro-Wilk, ANOVA and Tukey post-hoc tests. Mean fracture force was 300.61 N, 294.64 N and 408.49 N for self-cured PMMA, milled PMMA and 3D-printed resin, respectively. Mean force at FDP fracture of 3D-printed resin was significantly greater than the mean fracture force of either self-cured (p = 0.016, 95% CI [17.86, 197.91]) or milled (p = 0.010, 95% CI [23.83, 203.88]) PMMA. View Full-Text
Keywords: fracture strength; 3D-printed resin; provisional restorations fracture strength; 3D-printed resin; provisional restorations
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MDPI and ACS Style

Suralik, K.M.; Sun, J.; Chen, C.-Y.; Lee, S.J. Effect of Fabrication Method on Fracture Strength of Provisional Implant-Supported Fixed Dental Prostheses. Prosthesis 2020, 2, 325-332. https://0-doi-org.brum.beds.ac.uk/10.3390/prosthesis2040030

AMA Style

Suralik KM, Sun J, Chen C-Y, Lee SJ. Effect of Fabrication Method on Fracture Strength of Provisional Implant-Supported Fixed Dental Prostheses. Prosthesis. 2020; 2(4):325-332. https://0-doi-org.brum.beds.ac.uk/10.3390/prosthesis2040030

Chicago/Turabian Style

Suralik, Kelly M.; Sun, Jie; Chen, Chia-Yu; Lee, Sang J. 2020. "Effect of Fabrication Method on Fracture Strength of Provisional Implant-Supported Fixed Dental Prostheses" Prosthesis 2, no. 4: 325-332. https://0-doi-org.brum.beds.ac.uk/10.3390/prosthesis2040030

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