Long-Term Bonding Efficacy of CAD/CAM Hybrid Restorative Materials and Universal Adhesives.

Bashary, N; Brewster, J; Gill, P; Janal, M N; Özcan, M; Al-Haj Husain, N; Zhang, Y (2024). Long-Term Bonding Efficacy of CAD/CAM Hybrid Restorative Materials and Universal Adhesives. European journal of prosthodontics and restorative dentistry EJPRD, 32(3), pp. 270-276. Hancocks 10.1922/EJPRD_2455Bashary07

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OBJECTIVES

In-office and lab milled prostheses are the staple for indirect restorations. It is therefore critical to determine their long-term bonding durability.

METHODS

CAD/ CAM blocks of two classes of restorative materials: 1) a nano-ceramic reinforced polymer matrix (NCPM) and, 2) a polymer-infiltrated ceramic network (PICN) were bonded using four different universal adhesives (UA) and silane systems. A lithium disilicate glassceramic (LDS) was used as a reference. The blocks were bisected and bonded with different UA/resin-cement pairs. Bonded blocks were then cut into 1.0x1.0x12.0 mm bar specimens for microtensile bond testing. Half the bars were subjected to bond strength testing immediately and the other half after aging by 50,000 thermal cycles between 5°C and 55°C. ANOVA and post-hoc tests were used to compare mean bond strength among groups.

RESULTS

NCPM presented consistently high bond strength regardless of bonding techniques, while the bond strength of PICN and LDS were lower when bonded with UA relative to traditional silanes. The more hydrophilic UA produced higher bond strengths.

DISCUSSION

Glass-ceramics exhibited lower bond strength with UA than the conventional etch-rinse-silane techniques. However, UAs preserved bonding interface in the long-term.

SIGNIFICANCE

NCPM displayed superior bond strength relative to PICN and LDS regardless of the type of adhesives and bonding techniques.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > School of Dental Medicine > Department of Reconstructive Dentistry and Gerodontology
UniBE Contributor:	Al-Haj Husain, Nadin
ISSN:	0965-7452
Publisher:	Hancocks
Language:	English
Submitter:	Pubmed Import
Date Deposited:	10 Apr 2024 11:20
Last Modified:	21 Sep 2024 00:12
Publisher DOI:	10.1922/EJPRD_2455Bashary07
PubMed ID:	38591503
Uncontrolled Keywords:	Glass-Ceramic Microtensile Bond Strength Nano-Ceramic Reinforced Polymer Matrix Polymer Infiltrated Ceramic Network Resin Cement Universal Adhesives
URI:	https://boris.unibe.ch/id/eprint/195829