Effect of Plasma Treatment on Adhesion of Self-curing Repair Resin to Acrylic Denture Base

• Published in: Dental Materials Journal Vol. 23; no. 4; pp. 545 - 549
• Main Authors: NISHIGAWA, Goro, MARUO, Yukinori, OKA, Morihiko, OKAMOTO, Makoto, MINAGI, Shogo, IRIE, Masao, SUZUKI, Kazuomi
• Format: Journal Article
• Language: English
• Published: Japan The Japanese Society for Dental Materials and Devices 2004
• Subjects: Acrylic denture base resin; Acrylic Resins - radiation effects; Adhesion; Adhesiveness; Dental Bonding - methods; Dental Stress Analysis; Dentistry; Denture Bases; Denture Repair; Drug Storage; Hot Temperature; Ions; Materials Testing; Microscopy, Electron, Scanning; Plasma treatment; Resin Cements - chemistry; Shear Strength; Surface Properties - radiation effects; Water
• ISSN: 0287-4547; 1881-1361
• DOI: 10.4012/dmj.23.545

Plasma irradiation on surface of heat-cured acrylic resin prior to processing self-curing acrylic resin is likely to effectively increase the adhesive strength between these materials for short-term period. However, long-term reliability of adhesive strength between these materials has not been clarified yet. In the present study, these materials were stored in water for a long period (100 days), and the effect on their shear bond strength was investigated. Forty-four test specimens with flat bonding test surface were made with heat-cured acrylic resin. They were divided into four groups according to treatment procedures for bonding surface: plasma treatment, adhesive primer application, adhesive primer application after plasma treatment, and no treatment (for control). Self-curing acrylic resin was processed against all bonding surfaces. After storage in water for 100 days, shear bond strength values between heat-cured and self-cured acrylic resins were measured. Specimens in plasma treatment group exhibited higher shear bond strength value than those in control, although the difference was not significant.