The Shear Bond Strength between Milled Denture Base Materials and Artificial Teeth: A Systematic Review

Area of Science:

• Dental Materials Science
• Biomaterials Engineering
• Prosthodontics

Background:

• Limited data exists on the bond strength between digitally manufactured denture base resins and artificial teeth.
• Previous studies focused on shear bond strength of milled denture bases with various artificial teeth.

Purpose of the Study:

• To systematically review and evaluate existing evidence on the shear bond strength between milled denture base resins and artificial teeth.
• To compare the bond strength of digital (CAD/CAM) versus conventional denture materials.

Main Methods:

• A systematic literature search was performed in PubMed, Scopus, and Web of Science up to June 1, 2022.
• Studies meeting PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines were selected based on shear bond strength data.
• Three studies met the inclusion criteria, all exhibiting a moderate risk of bias.

Main Results:

• Two studies found no significant difference in bond strength between heat-polymerized and CAD/CAM (milled) denture base materials.
• One study reported higher bond strength for CAD/CAM (milled) denture base materials.
• Bonding agents were found to provide bond strength comparable to conventional methods.

Conclusions:

• Digitally produced denture base resins, when used with bonding agents, demonstrate bond strength similar to conventional denture base materials.
• Future research should employ larger sample sizes, standardized specimen dimensions, and blinded testing to reduce bias and improve study quality.