Kim, Hyun-Tae; Jo, Ye-Hyeon; Jee, Eunbyeol; Yoon, Hyung-In; Yilmaz, Burak (2024). Effect of postpolymerization time and atmosphere on surface properties and biofilm formation in additively manufactured resins for definitive restorations. (In Press). Journal of dentistry, 147, p. 105143. Elsevier 10.1016/j.jdent.2024.105143
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OBJECTIVES
To investigate how postpolymerization time (PPT) and atmosphere (PPA) influence the surface properties, protein adsorption, and microbial adhesion of two types of additively manufactured (AM) resins used for definitive restorations.
METHODS
Two different types of commercially available AM resins for definitive restorations (UR and CR) were used to create disk-shaped specimens. These specimens were divided into eight groups based on resin type (UR and CR), PPT (standard or extended), and PPA (air or nitrogen). After postpolymerization, the surface roughness (Ra and Sa) and surface free energy (SFE) of all specimens were measured. The study also evaluated protein adsorption, microbial attachment, and cytotoxicity. A non-parametric factorial analysis of variance with post-hoc analyses was conducted, using a significance level (α) of 0.05.
RESULTS
The Ra and Sa values for CR were higher than those for UR, regardless of PPT or PPA (P<0.05). For UR, SFE was higher with extended PPT compared to standard PPT. CR had higher SFE than UR under standard PPT. The interaction between PPT and PPA had a significant effect on protein adsorption (P<0.05). When PPT was standard, nitrogen significantly increased protein adsorption compared to air. The interaction between resin type and PPA, and between resin type and PPT, significantly affected microbial adhesion (P<0.05). The changes in PPT or PPA did not affect the cytotoxicity of either AM resin.
CONCLUSION
Surface properties, protein adsorption, and microbial attachment were influenced by the interactions among PPT, PPA, and resin type. These factors can have implications for resin-based definitive restorations.
CLINICAL SIGNIFICANCES
Clinicians should understand the impact of PPT and PPA on the surface properties of AM resins for definitive restorations, particularly regarding protein adsorption and microbial adhesion. Additionally, the type of AM resin (based on chemical composition) could affect its biological properties.
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 04 Faculty of Medicine > School of Dental Medicine |
UniBE Contributor: |
Yoon, Hyungin, Yilmaz, Burak |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
1879-176X |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
25 Jun 2024 14:37 |
Last Modified: |
30 Jun 2024 00:20 |
Publisher DOI: |
10.1016/j.jdent.2024.105143 |
PubMed ID: |
38906456 |
Uncontrolled Keywords: |
Additive manufacturing Biofilm formation Definitive resin Postpolymerization time Surface atmosphere |
BORIS DOI: |
10.48350/198010 |
URI: |
https://boris.unibe.ch/id/eprint/198010 |
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