Journal article

Publication year: 2009

Pages: 152-157

Journal: Journal of Dental Research

Volume number: 88

Issue number: 2

ISSN: 0022-0345

DOI Link: https://doi.org/10.1177/0022034508329703

Publisher: SAGE Publications

Abstract: 
Repair of biopolymers is a critical issue, especially with aged restorations. Obtaining a chemical bond to the repair surface might solve this problem. We hypothesized that certain repair liquids are suitable to establish a strong bond to an artificially aged dimethacrylate-based biopolymer for temporary restorations. Specimens made of a self-curing temporary crown-and-bridge material were prepared and thermocycled for 7 days (5000x, 5-55 degrees C). Cylinders made of light-curing composites (n = 10) were bonded onto the specimen surface, either after grinding or after the application of 4 different experimental repair liquids (Bis-GMA:TEGDMA mixture = bonding, methylmethacrylate = MMA, bonding & acetone, bonding & MMA). A shear bond strength test was performed 24 hrs after repair. The highest bond strength was obtained with the bonding & acetone liquid (20.1 +/- 2.2 MPa). The use of MMA significantly affected the bond strength (6.8 +/- 1.9 MPa). MMA is inadequate as a repair liquid on aged composite-based biopolymers.

Harvard Citation style: Balkenhol, M., Michel, K., Stelzig, J. and Woestmann, B. (2009) Repairability of Cross-linked Biopolymers, Journal of Dental Research, 88(2), pp. 152-157. https://doi.org/10.1177/0022034508329703

APA Citation style: Balkenhol, M., Michel, K., Stelzig, J., & Woestmann, B. (2009). Repairability of Cross-linked Biopolymers. Journal of Dental Research. 88(2), 152-157. https://doi.org/10.1177/0022034508329703