Mild acids facilitate functional dentin remineralization under thermo-mechanical stimuli.
Am J Dent
; 31(3): 155-165, 2018 Jun.
Article
em En
| MEDLINE
| ID: mdl-30028935
ABSTRACT
PURPOSE:
To evaluate if mechanical and thermal cycling promote remineralization at the resin-dentin interface after bonding with three different adhesive approaches.METHODS:
Dentin surfaces were subjected to three different treatments demineralization (1) by 37% phosphoric acid followed by application of an etch-and-rinse dentin adhesive Single Bond (Adper Single Bond) (SB); (2) by 0.5 M ethylenediaminetetraacetic acid (EDTA) followed by SB; (3) application of a self-etch dentin adhesive Clearfil-SEB (Clearfil SE Bond). Bonded interfaces were stored during 24 hours and then submitted for 3 months to (1) storage at 37ºC, (2) load cycling, (3) thermocycling, and (4) thermo+load cycling. One section was extracted from each tooth, monthly. Resin-dentin interfaces were analyzed by AFM nano-indentation, Raman spectroscopy/cluster analysis and Masson's trichrome staining at 24 hours, 1, 2 and 3 months, to determine remineralization at the interface.RESULTS:
Thermo+load cycling promoted the highest biomimetic remineralization at the hybrid layer formed with EDTA+SB and Clearfil-SEB, at the 1 month time point. A narrow mineral-depleted zone was observed after thermo+load cycling with EDTA+ SB, and at those specimens bonded with Clearfil-SEB. Thermo+load cycling remineralized the dentin interface treated with EDTA+SB and Clearfil-SEB, after 1 month of study period, providing bioactivity and maturity of formed minerals. CLINICALSIGNIFICANCE:
In vitro challenging (thermo+load cycling) favors dentin remineralization at the resin-dentin bonded interfaces promoted with mild conditioning acids.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Remineralização Dentária
/
Colagem Dentária
/
Cimentos Dentários
Idioma:
En
Revista:
Am J Dent
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Espanha