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Updated: Apr 28, 2026
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Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
953
Microanalysis of thermal-induced changes at the resin-dentin interface.
Manuel Toledano1, Fátima S Aguilera1, Estrella Osorio1
1Faculty of Dentistry,Dental Materials Section,University of Granada,Colegio Máximo de Cartuja s/n,18071 Granada,Spain.
Summary
Two dentin adhesive systems were tested for remineralization potential after simulated aging. The self-etch system demonstrated superior remineralization and reduced microleakage compared to etch-and-rinse, indicating better durability.
Area of Science:
- Dental Materials Science
- Biomaterials
- Nanotechnology in Dentistry
Background:
- Dentin adhesive systems are crucial for durable dental restorations.
- Understanding their long-term stability and remineralization capacity is vital.
- In vitro aging, such as thermo-cycling, simulates oral environment challenges.
Purpose of the Study:
- To evaluate the remineralization ability of two dentin adhesive systems.
- To assess the effects of in vitro thermo-cycling on bonded dentin interfaces.
- To compare an etch-and-rinse (PA+SB) with a self-etch (SEB) adhesive system.
Main Methods:
- Dentin surfaces were treated with phosphoric acid (PA) + single bond (SB) or Clearfil SE bond (SEB).
- Specimens underwent storage (24h, 3m) or thermo-cycling (100,000 cycles).
- Evaluations included AFM, nanoindentation, Raman spectroscopy, CLSM, and Masson's trichrome staining.
Main Results:
- Thermo-cycling increased nanohardness and Young's modulus in both adhesive groups.
- Raman spectroscopy indicated an increased mineral-matrix ratio after thermo-cycling.
- The self-etch system (SEB) showed complete absence of micropermeability and nanoleakage post-thermo-cycling, with total remineralization.
Conclusions:
- Both dentin adhesive systems exhibited some degree of remineralization after thermo-cycling.
- The self-etch adhesive system (SEB) demonstrated superior performance, with enhanced durability and complete remineralization.
- Thermo-cycling positively influenced the mechanical properties and mineral content of the bonded interface.
