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Adhesion to eroded enamel and dentin: systematic review and meta-analysis
Annette Wiegand1, Clemens Lechte1, Philipp Kanzow1
1Department of Preventive Dentistry, Periodontology and Cariology, University Medical Center Göttingen, Germany.
Summary
Dental erosion significantly weakens dentin bond strength but not enamel bond strength. Surface pretreatment can improve dentin bonding, while adhesive type does not impact performance on eroded surfaces.
Area of Science:
- Dental Materials Science
- Restorative Dentistry
- Biomaterials
Background:
- Dental erosion can compromise the integrity of tooth structure.
- Adhesive dentistry relies on strong bonds between restorative materials and tooth tissues.
- Understanding bond strength to eroded surfaces is crucial for clinical success.
Purpose of the Study:
- To compare bond strength to eroded versus sound enamel and dentin.
- To evaluate the influence of adhesive type (etch&rinse vs. self-etch) on bonding to eroded tissues.
- To assess the efficacy of surface pretreatment in improving bond strength to eroded dentin.
Main Methods:
- Systematic review and meta-analysis of 47 in vitro and in situ studies.
- Comparison of bond strength data using random-effects meta-analyses.
- Subgroup analyses for adhesive mode and aging effects; assessment of publication bias and study quality.
Main Results:
- Erosion significantly reduces dentin bond strength (mean difference: -10.2 MPa) but not enamel bond strength.
- Surface pretreatment can enhance dentin bond strength (up to +12.4 MPa).
- No significant difference in bonding performance between etch&rinse and self-etch adhesives on eroded enamel or dentin.
Conclusions:
- Dental erosion negatively impacts dentin bond strength, necessitating interventions.
- Surface pretreatment is recommended to improve dentin bonding in eroded areas.
- Adhesive system choice does not appear to influence bonding outcomes on eroded tooth surfaces.
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