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Adaptation to the cavity floor of the light‐cured glass ionomer cement base under a composite restoration
Author(s) -
HOTTA M.,
AONO M.
Publication year - 1994
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1994.tb01183.x
Subject(s) - ultimate tensile strength , glass ionomer cement , materials science , cement , enamel paint , composite material , composite number , scanning electron microscope , bond strength , bonding strength , dentin , dentistry , adhesive , medicine , layer (electronics)
Summary The study attempted to assess methods of prevention of the formation of a contraction gap in a cylindrical enamel and dentine cavity. The influence has been investigated of the tensile bond strength of cement/dentine and cement/composite resin and the direct tensile strength during setting of light‐cured glass‐ionomer cements. The interface between composite resin/cement and cement/dentine were viewed and photographed by replica techniques under an SEM (Scanning Electron Microscope). The most noticeable finding was that an enamel and dentine cavity applicated with light‐ and auto‐cured glass‐ionomer cement generally presented with a small construction gap at the tooth restoration interface. However, the light‐cured glass‐ionomer base (Vitrabond) exhibited significantly better tensile bond strength to dentine and resin performance than the conventional glass‐ionomer tested. This study revealed that there was no clear relationship between the adhesion to dentine and the adaptation to the dentine cavity floor.