Biomimetic remineralization of dentin.
OBJECTIVE
Remineralization of demineralized dentin is important for improving dentin bonding stability and controlling primary and secondary caries. Nevertheless, conventional dentin remineralization strategy is not suitable for remineralizing completely demineralized dentin within hybrid layers created by etch-and-rinse and moderately aggressive self-etch adhesive systems, or the superficial part of a caries-affected dentin lesion left behind after minimally invasive caries removal. Biomimetic remineralization represents a different approach to this problem by attempting to backfill the demineralized dentin collagen with liquid-like amorphous calcium phosphate nanoprecursor particles that are stabilized by biomimetic analogs of noncollagenous proteins.


METHODS
This paper reviewed the changing concepts in calcium phosphate mineralization of fibrillar collagen, including the recently discovered, non-classical particle-based crystallization concept, formation of polymer-induced liquid-precursors (PILP), experimental collagen models for mineralization, and the need for using phosphate-containing biomimetic analogs for biomimetic mineralization of collagen. Published work on the remineralization of resin-dentin bonds and artificial caries-like lesions by various research groups was then reviewed. Finally, the problems and progress associated with the translation of a scientifically sound concept into a clinically applicable approach are discussed.


CONCLUSIONS
The particle-based biomimetic remineralization strategy based on the PILP process demonstrates great potential in remineralizing faulty hybrid layers or caries-like dentin. Based on this concept, research in the development of more clinically feasible dentin remineralization strategy, such as incorporating poly(anionic) acid-stabilized amorphous calcium phosphate nanoprecursor-containing mesoporous silica nanofillers in dentin adhesives, may provide a promising strategy for increasing of the durability of resin-dentin bonding and remineralizing caries-affected dentin.
Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, China.
Li-Na
LN
Niu
Department of Stomatology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China.
Wei
W
Zhang
Department of Oral Biology, Georgia Regents University, Augusta, GA, USA.
David H
DH
Pashley
Department of Medical Sciences, University of Trieste, Trieste and IGM-CNR, Bologna, Italy.
Lorenzo
L
Breschi
Department of Stomatology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China.
Jing
J
Mao
Department of Prosthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, China. Electronic address: jhchen@fmmu.edu.cn.
Ji-Hua
JH
Chen
Department of Oral Biology, Georgia Regents University, Augusta, GA, USA; Department of Endodontics, Georgia Regents University, Augusta, GA, USA. Electronic address: ftay@gru.edu.
Franklin R
FR
Tay
D032701:Biomimetics; D002130:Calcium Phosphates / Q000737:chemistry; D003094:Collagen / Q000737:chemistry; D003804:Dentin / Q000737:chemistry*; D006801:Humans; D046529:Microscopy, Electron, Transmission; D014089:Tooth Remineralization
D002130:Calcium Phosphates; D003094:Collagen; C020243:calcium phosphate
Biomimetic; Dentin; Mineralization