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Fluid flow after resin‐composite restoration in extracted carious teeth
Author(s) -
Banomyong Danuchit,
Palamara Joseph E. A.,
Messer Harold H.,
Burrow Michael F.
Publication year - 2009
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.2009.00616.x
Subject(s) - dentin , glass ionomer cement , dentistry , molar , dentinal tubule , scanning electron microscope , materials science , carious lesion , dental restoration , confocal laser scanning microscope , adhesive , composite material , enamel paint , biomedical engineering , medicine , layer (electronics)
The aim of this study was to investigate fluid flow in dentin after restoration of carious teeth with resin composite bonded with a total‐etching adhesive, with or without glass‐ionomer cement lining. The roots of extracted third molars were removed and the crowns were connected to a fluid flow‐measuring device. Each carious lesion was stained with caries detector dye and caries was removed using slow‐speed burs and spoon excavators. Caries‐excavated teeth were divided into two groups for restoration with resin composite bonded with a total‐etch adhesive: (i) without lining; and (ii) lined with glass‐ionomer cement before bonding. In non‐carious teeth, cavities of similar dimensions were prepared, divided into two groups, and restored in the same manner. Fluid flow was recorded, after restoration, for up to 1 month. Caries‐affected dentin was examined by scanning electron microscopy (SEM), and the bonded interfaces were observed using a confocal laser scanning microscope. No significant difference in fluid flow was observed between the two restorative procedures or between the carious and non‐carious groups. The SEM images showed that the dentinal tubules of acid‐etched, caries‐affected dentin were usually still occluded, while some were patent. Limited penetration of fluorescent dye into dentin and into the bonded interfaces of restored carious teeth was observed.