Biocompatibility of Amalgam vs Composite - A Review

Area of Science:

• Dental materials science
• Biocompatibility research
• Public health dentistry

Background:

• The Minamata Convention restricts amalgam use, prompting re-evaluation of dental material biocompatibility.
• Concerns exist regarding mercury in amalgam and monomers in dental composites.
• Bisphenol A and nanoparticles from dental restorations also require biocompatibility assessment.

Purpose of the Study:

• To review the biocompatibility of dental amalgam and composites.
• To inform dentists for patient communication regarding material safety.
• To identify risk groups and necessary precautions for dental material use.

Main Methods:

• Literature review of biocompatibility studies on dental materials.
• Analysis of toxicological data for mercury, monomers, bisphenol A, and nanoparticles.
• Evaluation of exposure levels in clinical practice versus laboratory settings.

Main Results:

• Laboratory tests show toxic reactions to amalgam and composite components at high concentrations.
• Bisphenol A exhibits estrogen-like effects.
• Clinical concentrations are generally lower than those causing toxicity in lab tests.

Conclusions:

• Both amalgam and composite are considered safe for the general population.
• Specific risk groups (e.g., pregnant women, children, dental personnel) require restricted use and precautionary measures.
• Open and thorough risk communication with patients is crucial, as highlighted by the amalgam debate.