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- Title
Effects of a coating resin containing S-PRG filler to prevent demineralization of root surfaces.
- Authors
Sai MA; IMAZATO, Satoshi; CHEN, Ji-hua; MAYANAGI, Gen; TAKAHASHI, Nobuhiro; ISHIMOTO, Takuya; NAKANO, Takayoshi
- Abstract
The purpose of this study was to evaluate the ability of a coating material containing the surface pre-reacted glass-ionomer (S-PRG) filler to protect the root from demineralization in vitro. The proprietary coating resin containing the S-PRG filler (PRG Barrier Coat) was applied to human root dentin and immersed in acid buffer at pH 4.5 for 3 d. Demineralization was evaluated by micro-CT scanning and the dentin-material interface observed by scanning electron microscopy. The ability of the coating resin to modify acid production by Streptococcus mutans was investigated by monitoring pH using an ion-sensitive field-effect transistor pH electrode. Application of PRG Barrier Coat produced a coating layer with the thickness of approximately 200 ¡im and completely inhibited demineralization. The bacteria-induced pH fall at the material surface was significantly inhibited. We conclude that S-PRG filler-containing coating resin may be an effective material for protecting exposed root from both chemical and biological challenges.
- Subjects
GUMS &; resins; SURFACE coatings; IN vitro studies; TOOTH roots; TOOTH demineralization; DENTAL glass ionomer cements; PH effect
- Publication
Dental Materials Journal, 2012, Vol 31, Issue 6, p909
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2012-061