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In Vitro Comparison Between Different Types of Fissure Sealants in Permanent Teeth-Micro-CT Study
Shara I Sajini1, Jehad Al-Mutiri2, Fares Al-Harbi2
1Department of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Polymers
|July 28, 2026
Summary
This study compared four dental sealants for sealing tooth fissures. Resin-based sealants showed slightly better adaptation, but no significant differences were found between sealant types in preventing cavities.
Area of Science:
- Dental Materials Science
- Cariology
- Preventive Dentistry
Background:
- Occlusal pits and fissures are highly susceptible to dental caries.
- Effective pit and fissure sealants are crucial for caries prevention.
- Understanding sealant adaptation is key to clinical success.
Purpose of the Study:
- To evaluate and compare the internal adaptation of two resin-based and two glass ionomer-based pit and fissure sealants.
- To assess sealant performance after simulated aging using thermal cycling.
- To determine the influence of sealant material and surface coating on adaptation.
Main Methods:
- Four pit and fissure sealants were applied to extracted premolar teeth (n=10 per group).
- Sealants included BeautiSealant, 3M Clinpro Sealant, GC Fuji IX (uncoated), and GC Fuji IX with G-Coat Plus.
- Internal adaptation was assessed using X-ray microtomography (micro-CT) with silver nitrate tracer after 15,000 thermal cycles.
Main Results:
- No statistically significant differences in overall mean gap volumes were observed between the four sealant groups (p=0.774).
- 3M Clinpro Sealant showed the lowest mean gap volume (3.45 ± 1.71), followed by BeautiSealant (3.89 ± 1.34).
- GC Fuji IX with G-Coat Plus (4.93 ± 4.09) and without coating (5.56 ± 5.35) exhibited higher mean gap volumes.
Conclusions:
- Resin-based sealants demonstrated a trend towards better fissure penetration and marginal adaptation compared to glass ionomer formulations.
- Despite observed differences, these did not reach statistical significance in this study.
- Further research may be needed to confirm the long-term clinical implications of these findings for caries prevention.