Comparative study of the dentin/adhesive systems interface after treatment with Er:YAG laser and acid etching using scanning electron microscope

Background and Objectives To assess dentin/adhesive systems interface after dentin conditioning with Er:YAG laser. Study Design/Materials and Methods Twenty‐four dentin half‐disks were assigned to 3 groups: All Bond 2 (AB); Optibond Solo Plus (OP); and Clearfil Liner Bond 2V (CL), which were divided...

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Published in:Lasers in surgery and medicine 2004-06, Vol.34 (5), p.385-390
Main Authors: Sassi, Juliano F., Chimello, Daniela T., Borsatto, Maria C., Corona, Silmara A.M., Pecora, Jesus D., Palma-Dibb, Regina Guenka
Format: Article
Language:English
Subjects:
Acid Etching, Dental
Composite Resins
conditioning
Dentin - diagnostic imaging
Dentin-Bonding Agents
Humans
In Vitro Techniques
laser irradiation
Lasers
microscopy
Microscopy, Electron, Scanning
morphology
Tissue Conditioning (Dental)
Ultrasonography
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Summary:Background and Objectives To assess dentin/adhesive systems interface after dentin conditioning with Er:YAG laser. Study Design/Materials and Methods Twenty‐four dentin half‐disks were assigned to 3 groups: All Bond 2 (AB); Optibond Solo Plus (OP); and Clearfil Liner Bond 2V (CL), which were divided into three sub‐groups, according to dentin surface treatment: Er:YAG laser; Er:YAG laser plus acid; acid solely. After the adhesive protocol, specimens were embedded in resin, sectioned, and prepared for SEM analysis. Each area was examined under 1,500× magnification to assess the hybrid layer. Results Acid conditioning provided to AB and OP thick and homogeneous hybrid layer, as well as conical and uniform tags. The same pattern was observed for CL. In general, dentin treatment with laser, even when associated to acid, promoted irregular and thin hybrid layer, as well as scarce and thin tags. Conclusions Er:YAG laser influenced the adhesive systems interface, hampering hybrid layer formation. Lasers Surg. Med. 34:385–390, 2004. © 2004 Wiley‐Liss, Inc.
ISSN:0196-8092
1096-9101
DOI:10.1002/lsm.20064