Optimizing Dental Bond Strength: Insights from Comprehensive Literature Review and Future Implications for Clinical Practice

Abstract

This review examines the modifying factors affecting bond strength in various bonding scenarios, particularly their relevance to the longevity of dental restorations. Understanding these factors is crucial for improving clinical outcomes in dentistry. Data were gathered from the PubMed database, ResearchGate, and Google Scholar resources, covering studies from 1992 to 2022. The findings suggest that for dentin-resin bonds, minimizing smear layers and utilizing MMP inhibitors to prevent hybrid layer degradation are essential. In the case of resin-resin bonds, reversing blood contamination is possible, but preventing saliva contamination is more challenging, underscoring its critical importance during clinical procedures. Additionally, while pretreatment on ceramics has minimal impact on bond strength, the influence of specific colorings should be carefully considered in treatment planning. This comprehensive review highlights that although established practices recognize significant bond strength factors, ongoing research provides valuable insights to enhance the clinical experience for patients. Once confirmed through rigorous experimentation, these emerging findings should be swiftly integrated into dental practice to improve patient outcomes.

Keywords: MMP inhibitors; bond strength; ceramics pretreatment; dental restorations; dentin-resin bonds; resin-resin bonds; saliva contamination; smear layers.

Figure 1

Strategy of bond strength testing used in the laboratory (µmPO, micro push-out test; µSBS, micro shear bond strength; µTBS, micro tensile bond strength; PO, push-out test; SBS, shear bond strength; TBS, tensile bond strength; POFT, push-out fatigue test; SFT, shear fatigue test; 3PBT, 3-point-bend fatigue test; 4PBT, 4-point-bend fatigue test; µTFT, micro tensile fatigue resistance test; µSFT, micro shear fatigue resistance test; µRFT, micro rotary fatigue test).