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Neutralizing effect by resin-based materials containing silane-coated glass fillers
Toshiyuki Itota1, Toshiyuki Nakatsuka, Kumiko Tanaka
1Itota Dental Clinic, Himeji, Japan. itota@silk.ocn.ne.jp
Dental Materials Journal
|July 9, 2010
Summary
This study assessed resin-based dental materials with silane-coated glass fillers for fluoride release and secondary caries inhibition. High fluoride release and neutralizing ability did not prevent secondary caries around restorations.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Cariology
Background:
- Resin-based dental restorative materials are widely used.
- Secondary caries, or recurrent decay, remains a significant challenge in restorative dentistry.
- Developing materials with enhanced cariostatic properties, such as fluoride release, is crucial for improving restoration longevity.
Purpose of the Study:
- To evaluate the fluoride release, pH-neutralizing capacity, and secondary caries inhibition of resin-based materials incorporating silane-coated fluoro-boro-alumino-silicate glass fillers.
- To compare the performance of glass fillers coated with 3-methacryloxypropyltrimethoxysilane versus 3-aminopropyltrimethoxysilane against uncoated fillers.
Main Methods:
- Resin-based materials were fabricated with either uncoated glass filler, 3-methacryloxypropyltrimethoxysilane-coated filler, or 3-aminopropyltrimethoxysilane-coated filler.
- Fluoride ion release and pH changes were measured over a 10-week period.
- The inhibitory effect on secondary caries formation was assessed using standardized lesion models.
Main Results:
- The material with 3-aminopropyltrimethoxysilane-coated filler initially exhibited higher fluoride release and pH values compared to controls.
- The neutralizing ability of the 3-aminopropyltrimethoxysilane-containing material diminished over time as specimens aged.
- No significant difference in the mean depth of artificial enamel lesions was observed among the three material groups.
Conclusions:
- While silane-coated glass fillers can enhance initial fluoride release and neutralizing capacity in resin-based materials, this effect may not be sustained.
- The tested materials, even those with high fluoride release and neutralizing potential, did not demonstrate an ability to inhibit secondary caries formation around restorations.
- Further research is needed to develop resin-based materials with more effective and durable anticariogenic properties.
