[Ultrastructural study of sclerotic dentin surface following the application of the Er, Cr: YSGG laser].
Zhonghua Kou Qiang Yi Xue Za Zhi
; 44(3): 159-61, 2009 Mar.
Article
em Zh
| MEDLINE
| ID: mdl-19576021
ABSTRACT
OBJECTIVE:
To investigate the ultrastructure character of sclerotic dentin surface conditioned by the Er, Cr YSGG laser and acid etching.METHODS:
Sixteen human teeth with sclerotic dentin were randomly assigned to 4 groups, and conditioned with acid etching (Group A), laser irradiation (Group B), laser irradiation after acid etching (Group C), or acid etching after laser irradiation (Group D) respectively. The characters of surface ultrastructure were observed using scanning electron microscope (SEM).RESULTS:
In Group A, the majority of dentin tubules were blocked by sclerotic rods. In Group B, the honeycomb-like change was found on the sclerotic dentin surface. The surface structure of Group C was similar to that of Group B. In group D etching wiped off the honeycomb-like structure.CONCLUSIONS:
The sclerotic dentin surface treated with laser irradiation turns into uniform honeycomb-like structure. The rough surface may be beneficial to bonding strength on sclerotic dentin after laser irradiation.
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Base de dados:
MEDLINE
Assunto principal:
Dentina
/
Lasers de Estado Sólido
Limite:
Humans
Idioma:
Zh
Revista:
Zhonghua Kou Qiang Yi Xue Za Zhi
Assunto da revista:
ODONTOLOGIA
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
China