Investigation of fast-setting acrylic adhesives for bonding attachments to human tooth surfaces

✍ Scribed by William H. Snyder; Charles E. Wilson; George V. Newman; John Semen

• Book ID: 102735246
• Publisher: John Wiley and Sons
• Year: 1967
• Tongue: English
• Weight: 979 KB
• Volume: 11
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1967.070110813

✦ Synopsis

Some of the problems encountered in adhesive bonding of plastic attachments to human tooth surfaces were investigated. Acrylic adhesives based on' poly( methyl meth-acry1ate)-methyl methacrylate monomer mixtures with benzoyl peroxide initiation and NJVdimethylaniline acceleration were utilized. Both homopolymers and copolymers were investigated. Recently extracted upper central incisors were employed in the bonding experiments. Bond strengths were improved by pretreating the tooth surfaces with mineral acids such as HsP04. Surface wetting by the liquid adhesive was shown to be improved by the acid treatment. The molecular weight of polymer or copolymer employed in the liquid adhesive had an important effect on bond strengths. The optimum molecular weight for obtaining maximum bond strengths was around 20,000 g./mole. Water immersion of the bonded specimens a t 37°C. for periods up to 6 weeks had a deleterious effect on bond strengths. Nevertheless, it was shown that some of the adhesives formed reasonably strong bonds for periods exceeding 6 months even with water immersion.