Related Experiment Video
Updated: Jul 10, 2026
04:54
Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices
Published on: January 17, 2017
Laboratory evaluation of the Gluma 3-step bonding system
C Strydom1, D H Retief, C M Russell
1Department of Restorative Dentistry, Faculty of Dentistry, University of Stellenbosch, Republic of South Africa.
American Journal of Dentistry
|April 1, 1995
Summary
The Gluma bonding system demonstrated effective shear bond strengths (SBS) to enamel and dentin, with microleakage (ML) comparable to established standards. Temperature cycling negatively impacted dentin bond strength, indicating a need for further research into long-term stability.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
- Biomaterials
Background:
- Dental restorations require durable adhesion to tooth structure.
- Microleakage at the tooth-restoration interface can lead to secondary caries and pulpal issues.
- Evaluating new adhesive systems is crucial for improving clinical outcomes.
Purpose of the Study:
- To assess the in vitro shear bond strengths (SBS) of the Gluma bonding system to enamel and dentin.
- To evaluate the qualitative and quantitative microleakage (ML) of Class V restorations using the Gluma system.
- To examine the effects of the Gluma system components on enamel and dentin via scanning electron microscopy (SEM).
Main Methods:
- Extracted human teeth were prepared and restored with the Gluma system and Pekafill composite.
- Shear bond strengths were determined at various time points and storage conditions.
- Microleakage was assessed qualitatively at the cemento-enamel junction (CEJ) and quantitatively in dentin.
- Scanning electron microscopy was used to analyze the interaction of the system with tooth structure.
Main Results:
- The Gluma system achieved mean SBS ranging from 7.0 to 24.2 MPa, with lower values immediately after bonding.
- Temperature cycling significantly reduced SBS to dentin (P = 0.0003).
- Quantitative microleakage was 1.00 +/- 0.39 microgram dye/restoration.
- SEM revealed etch patterns conducive to bonding on enamel and penetration into dentin tubules.
Conclusions:
- The Gluma system exhibits promising in vitro bond strengths and acceptable microleakage.
- Long-term stability, particularly to dentin under thermal stress, requires further investigation.
- The system's interaction with enamel and dentin appears favorable for adhesion.
