Bahadır, Hasibe Sevilay; Bulut, Ali Can; Yilmaz, Burak (2024). Effect of preparation design on the fracture resistance and fracture patterns of 3D printed one-piece endodontic crowns. The journal of prosthetic dentistry, 132(3), 592.e1-592.e7. Elsevier 10.1016/j.prosdent.2024.06.004
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STATEMENT OF PROBLEM
The impact of various preparation designs on the fracture resistance and fracture type of mandibular premolars restored with 3 dimensionally (3D) printed, 1-piece endodontic crowns remains unclear.
PURPOSE
The purpose of this study was to investigate the effect of different preparation designs on the fracture resistance and fracture patterns of mandibular premolars restored with 3D printed 1-piece endodontic crowns after thermal aging.
MATERIAL AND METHODS
Forty-five freshly extracted mandibular premolars received 3 different preparation designs: with at least 2 intact cuspal walls (2CW), with only 1 intact cuspal wall (1CW), and no cuspal wall present (NoCW). One-piece endodontic crowns were designed by using a computer-aided design (CAD) software program, 3D printed, cemented to the prepared teeth with self-adhesive resin cement, and thermocycled between 5 °C and 55 °C in artificial saliva. Subsequently, all specimens were subjected to a fracture test. The results were statistically analyzed using 1-way ANOVA (α=.05), and fracture types of all specimens were examined using a light microscope.
RESULTS
The analysis of fracture resistance values across separate designs revealed no statistically significant differences (P>.05). Mean fracture resistance values were 724.5 N in 2CW, 713 N in 1CW, and 861 N in NoCW. In 2CW and 1CW, the 1-piece endodontic crowns mostly displayed Type III fractures, whereas those in NoCW exhibited a combination of Type II and Type III fractures.
CONCLUSIONS
The mandibular premolar 1-piece endodontic crowns tested in this study exhibited similar fracture resistance and type of fracture with different preparation designs.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > School of Dental Medicine > Department of Preventive, Restorative and Pediatric Dentistry 04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology |
UniBE Contributor: |
Yilmaz, Burak |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1097-6841 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
04 Jul 2024 13:55 |
Last Modified: |
13 Sep 2024 00:14 |
Publisher DOI: |
10.1016/j.prosdent.2024.06.004 |
PubMed ID: |
38960755 |
BORIS DOI: |
10.48350/198495 |
URI: |
https://boris.unibe.ch/id/eprint/198495 |
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