Effects of the addition of fluoride to a 4-META/MMA-TBB-based resin adhesive on fluoride release, acid resistance of enamel and shear bond strength in vitro

• Published in: Dental Materials Journal Vol. 32; no. 1; pp. 156 - 164
• Main Authors: IIJIMA, Masahiro, ITO, Shuichi, NAKAGAKI, Susumu, MUGURUMA, Takeshi, KOHDA, Naohisa, SAITO, Takashi, MIZOGUCHI, Itaru
• Format: Journal Article
• Language: English
• Published: Japan The Japanese Society for Dental Materials and Devices 01-01-2013; Japanese Society for Dental Materials and Devices
• Subjects: Acid resistance; Adhesive strength; Analysis of Variance; Bracket; Demineralization; Dental Enamel - chemistry; Dental Stress Analysis; Dentistry; Elastic Modulus; Enamels; Fluoride release; Fluorides; Fluorides - chemistry; Fluorides - pharmacology; Hardness; Humans; Nanoindentation test; Polymers; Resin; Resin Cements - chemistry; Resins; Shear; Shear Strength; Statistics, Nonparametric; Tooth Demineralization - chemically induced; Tooth Demineralization - prevention & control
• ISSN: 0287-4547; 1881-1361
• DOI: 10.4012/dmj.2012-166

This study investigated fluoride release, acid resistance and shear bond strength (SBS) of new 4-META/MMA-TBB-based fluoridecontaining resin adhesive (Super-Bond/F3). Super-Bond, Transbond Plus and Fuji Ortho LC were selected for comparison. Fluoride release into distilled water during 6-month period was measured using disk-shaped specimens. Brackets were bonded to human premolars with each material and then the specimens for the nanoindentation test were subjected to alternating immersion (demineralizing and remineralizing solutions); the hardness and elastic modulus of the enamel around bracket were determined. Rest of the specimens was subjected to examine the SBS. Super-Bond/F3 and Fuji Ortho LC showed significantly greater fluoride release compared with the other materials. The reductions in hardness and the elastic modulus for Super-Bond/F3 and Fuji Ortho LC were lower than those for the other materilas. Super-Bond and Super-Bond/F3 showed significantly greater SBS than Fuji Ortho FC. In conclusion, Super-Bond/F3 showed high fluoride-release, cariostatic potential and equivalent SBS.