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Effect of seating forces on cement-ceramic adhesion in microtensile bond tests


Marocho, Susana María Salazar; Özcan, Mutlu; Amaral, Regina; Valandro, Luiz Felipe; Bottino, Marco Antonio (2013). Effect of seating forces on cement-ceramic adhesion in microtensile bond tests. Clinical Oral Investigations, 17(1):325-331.

Abstract

OBJECTIVES: The aim of this study was to evaluate the effect of different seating forces during cementation in cement-ceramic microtensile bond strength (μTBS).
MATERIALS AND METHODS: Forty-five blocks (5 × 5 × 4 mm(3)) of a glass-infiltrated alumina-based ceramic (In-Ceram Alumina) were fabricated according to the manufacturer's instructions and duplicated in resin composite. Ceramic surfaces were polished, cleaned for 10 min in an ultrasonic bath, silica coated using a laboratory type of air abrasion device, and silanized. Each treated ceramic block was then randomly assigned to five groups (n = 9) and cemented to a composite block under five seating forces (10 g, 50 g, 100 g, 500 g, and 750 g) using a dual-cured resin cement (Panavia F). The ceramic-cement-composite assemblies were cut under coolant water to obtain bar specimens (1 mm × 0.8 mm(2)). The μTBS tests were performed in a universal testing machine (1 mm/min). The mean bond strengths values were statistically analyzed using one-way ANOVA (α ≤ 0.05).
RESULTS: Different seating forces resulted in no significant difference in the μTBS results ranging between 13.1 ± 4.7 and 18.8 ± 2.1 MPa (p = 0.13) and no significant differences among cement thickness.
CONCLUSIONS: Excessive seating forces during cementation seem not to affect the μTBS results.
CLINICAL RELEVANCE: Excessive forces during the seating of single all-ceramic restorations cementation seem to display the same tensile bond strength to the resin cement.

Abstract

OBJECTIVES: The aim of this study was to evaluate the effect of different seating forces during cementation in cement-ceramic microtensile bond strength (μTBS).
MATERIALS AND METHODS: Forty-five blocks (5 × 5 × 4 mm(3)) of a glass-infiltrated alumina-based ceramic (In-Ceram Alumina) were fabricated according to the manufacturer's instructions and duplicated in resin composite. Ceramic surfaces were polished, cleaned for 10 min in an ultrasonic bath, silica coated using a laboratory type of air abrasion device, and silanized. Each treated ceramic block was then randomly assigned to five groups (n = 9) and cemented to a composite block under five seating forces (10 g, 50 g, 100 g, 500 g, and 750 g) using a dual-cured resin cement (Panavia F). The ceramic-cement-composite assemblies were cut under coolant water to obtain bar specimens (1 mm × 0.8 mm(2)). The μTBS tests were performed in a universal testing machine (1 mm/min). The mean bond strengths values were statistically analyzed using one-way ANOVA (α ≤ 0.05).
RESULTS: Different seating forces resulted in no significant difference in the μTBS results ranging between 13.1 ± 4.7 and 18.8 ± 2.1 MPa (p = 0.13) and no significant differences among cement thickness.
CONCLUSIONS: Excessive seating forces during cementation seem not to affect the μTBS results.
CLINICAL RELEVANCE: Excessive forces during the seating of single all-ceramic restorations cementation seem to display the same tensile bond strength to the resin cement.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic for Fixed and Removable Prosthodontics
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2013
Deposited On:28 Mar 2013 09:46
Last Modified:18 Dec 2016 08:20
Publisher:Springer
ISSN:1432-6981
Additional Information:The original publication is available at www.springerlink.com
Publisher DOI:https://doi.org/10.1007/s00784-011-0668-y
PubMed ID:22237990

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