Surface treatment studies aimed at streamlining fissure sealant application

Area of Science:

• Dental Materials Science
• Biomaterials Engineering

Background:

• Fissure sealing is crucial for preventing dental caries.
• Optimizing enamel surface treatment is key to improving sealant longevity and effectiveness.

Purpose of the Study:

• To evaluate the impact of reduced acid etch time on enamel surface treatment for fissure sealing.
• To determine if prophylaxis is necessary before acid etching.
• To compare the efficiency of compressed air versus chemical drying agents.

Main Methods:

• Three laboratory studies were conducted.
• Scanning Electron Microscopy (SEM) was used to analyze enamel surface morphology.
• Tensile bond strength measurements assessed adhesion.
• Comparative analysis of drying methods was performed.

Main Results:

• Reducing acid etch time to 10 seconds created a finer etch pattern, yielding high bond strength with slightly reduced long-term adhesion.
• Conventional acid etching effectively removed acquired pellicle without prior prophylaxis.
• Compressed air provided faster, more thorough drying and resulted in greater bond strengths than chemical drying agents.

Conclusions:

• Shorter acid etch times are viable for fissure sealing, though long-term adhesion may be slightly compromised.
• Prophylaxis is not required before conventional acid etching for fissure sealing.
• Compressed air is a more efficient drying method, enhancing bond strength in dental sealant procedures.