[A scanning electron microscope study on resin bonding amalgam restoration in cavity].
OBJECTIVE
To detect the bonding interface of resin bonding amalgam restoration(BAR) with scanning electron microscope(SEM).


METHODS
Sixty-five healthy teeth were divided into 4 groups, including one control group(5 teeth) with regular amalgam restoration and 3 experimental groups (20 teeth each) with 3 kinds of resin bond agent. The section was detected with SEM to evaluate the resin-bonding-amalgam interface.


RESULTS
The resin bonding agent could fulfill the micro-leakage between amalgam and enamel or dentin, and seal the dentin tubules completely. The resin bonding agent could bond enamel, dentin and amalgam well. The chemical curing agent had a better effect than the light curing agent.


CONCLUSIONS
BAR reduces the micro-leakage around amalgam restoration and provides a better way to prevent secondary caries. Supported by Research Fund for Young Researches from Bureau of Health of Shanghai Municipality (Grant No.2007Y03).
Shang
Shu
S
Department of Endodontics, Shanghai Stomatological Disease Center, Shanghai 200031, China. sue917@hotmail.com
Feng
Kun
K
D055117:Curing Lights, Dental; D003723:Dental Amalgam; D001840:Dental Bonding; D003731:Dental Caries; D003743:Dental Enamel; D003804:Dentin; D017220:Dentin-Bonding Agents; D006801:Humans; D008689:Methacrylates; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements
D017220:Dentin-Bonding Agents; D008689:Methacrylates; D019279:Resin Cements; D003723:Dental Amalgam