Effective 10-MDP Bonding to Saliva-Contaminated Dentin

Area of Science:

• Dental Materials Science
• Adhesive Dentistry
• Biomaterials

Background:

• Saliva contamination poses a significant challenge to achieving reliable dental restorations.
• Effective decontamination protocols are crucial for ensuring optimal bond strength in adhesive dentistry.

Purpose of the Study:

• To evaluate the efficacy of 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) decontamination protocols.
• To measure the bonding effectiveness of different self-etch adhesives to saliva-contaminated dentin after surface decontamination.

Main Methods:

• Micro-tensile bond strength (µTBS) testing was performed on bur-cut dentin contaminated with saliva.
• Two self-etch adhesives, Clearfil SE Bond 2 (CSE2) and Clearfil Universal Bond Quick (CUBQ), were used.
• Decontamination was achieved using 10-MDP containing Katana Cleaner (KC) or CSE2 primer (CSE2p).

Main Results:

• The two-step self-etch adhesive CSE2 generally outperformed the one-step SE adhesive CUBQ.
• Both CSE2p and KC effectively decontaminated saliva-contaminated dentin for bonding.
• CSE2 showed satisfactory bonding performance even without a separate decontamination step.

Conclusions:

• Surface decontamination with CSE2p or KC restored unaltered bonding to saliva-contaminated dentin.
• For CUBQ, additional decontamination with CSE2p or KC is recommended.
• For CSE2, no additional decontamination agent is necessary for effective bonding.