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Dental unit waterline antimicrobial agents' effect on dentin bond strength
H W Roberts1, R I Karpay, S E Mills
1USAF Dental Investigation Service, USAF School of Aerospace Medicine, Brooks AFB, Texas 78235-5117, USA.
Journal of the American Dental Association (1939)
|February 19, 2000
Summary
Dental unit waterline antimicrobial agents can weaken dentin bond strength. Some agents, like diluted mouthwash and chlorhexidine, significantly reduce bond strength more than others, impacting dental procedures.
Area of Science:
- Dental materials science
- Antimicrobial efficacy
- Biomaterials
Background:
- Dental unit waterlines (DUWs) are prone to bacterial biofilm colonization.
- Numerous chemical treatments exist for DUW maintenance.
- Limited research addresses the impact of DUW antimicrobial agents on dentin bonding agents.
Purpose of the Study:
- To evaluate the effect of four proposed antimicrobial agents used in DUW treatments on dentin bond strength.
- To compare the efficacy of different antimicrobial agents in preserving dentin bond integrity.
Main Methods:
- A fifth-generation dentin-bonding agent was used to bond composite cylinders to molar dentin.
- Selected antimicrobial agents served as rinsing solutions post-conditioning.
- Shear testing was performed on bonded specimens to compare fracture strengths.
Main Results:
- All tested antimicrobial agents demonstrated a reduction in dentin bond strength.
- Diluted mouthrinse and chlorhexidine regimens significantly decreased dentin bond strength compared to sodium hypochlorite and citric acid.
- This indicates varying degrees of adverse effects among different antimicrobial agents.
Conclusions:
- Dental professionals must consider potential interactions between DUW antimicrobial agents and dentin-bonding agents.
- Further investigation is necessary to fully understand the clinical implications of these interactions.
- Antimicrobial agents used for DUW maintenance may negatively impact the success of dentin bonding procedures.