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  3. Repair bond strength of resin composite to restorative materials after short- and long-term storage.
 

Repair bond strength of resin composite to restorative materials after short- and long-term storage.

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BORIS DOI
10.7892/boris.131257
Date of Publication
September 2019
Publication Type
Article
Division/Institute

Zahnmedizinische Klin...

Author
Flury, Simonorcid-logo
Zahnmedizinische Kliniken, Klinik für Zahnerhaltung, Präventiv- und Kinderzahnmedizin
Dulla, Fabrice A
Peutzfeldt, Anne
Subject(s)

600 - Technology::610...

Series
Dental materials
ISSN or ISBN (if monograph)
0109-5641
Publisher
Elsevier
Language
English
Publisher DOI
10.1016/j.dental.2019.05.008
PubMed ID
31146960
Uncontrolled Keywords

Adhesion Amalgam Arti...

Description
OBJECTIVES

To investigate short- and long-term bond strength ("repair bond strength"; RBS) of a resin composite to six restorative materials using either a silane and a bonding agent or a universal "one-step self-etch" adhesive system.

METHODS

Specimens were produced from an amalgam, a direct resin composite, two indirect resin composites, a hybrid ceramic, and a feldspar ceramic and stored for 3 months in tap water (37 °C). All specimens were then sandblasted (AlO; 25 μm) and either treated with Monobond Plus and OptiBond FL Adhesive (MP-OFL) or with Scotchbond Universal (SBU). Filtek Z250 was used as "repair composite", and RBS was measured by means of a micro shear bond strength test after 24 h or after 1 year. RBS values (n = 15/group) were statistically analyzed (α = 0.05).

RESULTS

RBS (MPa; mean values (standard deviations)) after 24 h for MP-OFL: 18.6 (3.2)-23.9 (5.0) and for SBU: 12.5 (4.9)-18.1 (4.6); after 1 year for MP-OFL: 8.9 (4.6)-19.8 (4.3) and for SBU: 5.6 (2.3)-18.8 (3.5). After 24 h, MP-OFL showed significantly higher RBS to the hybrid ceramic and the feldspar ceramic than did SBU (p ≤ 0.0001) whereas there was no significant difference in RBS for the other four restorative materials. After 1 year, MP-OFL showed significantly higher RBS to the feldspar ceramic than did SBU (p = 0.043) whereas there was no significant difference in RBS for the other five restorative materials.

SIGNIFICANCE

The use of a silane and a bonding agent seems more versatile for repairing restorations than the use of a universal "one-step self-etch" adhesive system.
Handle
https://boris-portal.unibe.ch/handle/20.500.12422/180753
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Flury_et_al_2019textAdobe PDF2.91 MBpublisherpublished restricted
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