Document Detail

Effect of periodontal therapies on indirect restoration: a scanning electron microscopic analysis.
MedLine Citation:
PMID:  20640359     Owner:  NLM     Status:  MEDLINE    
The aim of this study was to evaluate the influence of different periodontal therapies on the integrity of indirect restorations by scanning electron microscopy (SEM). Sixty single-rooted bovine teeth were selected and randomly assigned to 12 groups. Inlay cavities were prepared in the cervical region on the center of the cementoenamel junction, and were restored with laboratory processed resin and luted with a resin cement. Twelve periodontal therapies were used (n= 5): C: control (no treatment); MS: manual scaling with Gracey curettes; US: ultrasonic scaling; PP: prophylaxis with prophylactic paste; PS: prophylaxis with pumice-stone; SBJ: sodium bicarbonate jet; MS/PP; MS/PS; MS/SBJ; US/PP; US/PS; US/SBJ. The specimens were prepared and analyzed by SEM. SEM micrographs at x100 to x1000 magnification were obtained from the surface of the laboratory resin and the interface of the indirect restorations. The images were evaluated by 3 skillful, calibrated, blinded observers as to the presence of grooves, microcavities and fracture of margins. The results showed that PS produced groves on restoration surface. MS and US produced groves and marginal fractures on the restorations. SBJ resulted in resin cement degradation. These results suggest that except for PS, all procedures had deleterious effects on the marginal integrity of indirect restorations.
Priscilla Barbosa Ferreira Soares; Denildo Magalhães; Alfredo Júlio Fernandes Neto; Carolina Guimarães Castro; Paulo César Freitas Santos Filho; Carlos José Soares
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Brazilian dental journal     Volume:  21     ISSN:  1806-4760     ISO Abbreviation:  Braz Dent J     Publication Date:  2010  
Date Detail:
Created Date:  2010-07-19     Completed Date:  2010-11-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9214652     Medline TA:  Braz Dent J     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  130-6     Citation Subset:  D    
Department of Periodontology and Implantology, Dental School, Federal University of Uberlândia, Uberlândia, MG, Brazil.
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MeSH Terms
Dental Marginal Adaptation*
Dental Restoration Failure
Dental Restoration, Permanent / methods
Dental Scaling*
Observer Variation
Random Allocation
Resin Cements / chemistry*
Single-Blind Method
Stress, Mechanical
Surface Properties
Tooth Cervix / drug effects,  ultrastructure*
Reg. No./Substance:
0/Resin Cements

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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