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Effect of composite resin placement techniques on the microleakage of two self-etching dentin-bonding agents.
Am J Dent. 2001 Jun; 14(3):132-6.AJ

Abstract

PURPOSE

To evaluate microleakage of Class V resin-based composites (RBC) bonded with two self-etching dentin adhesive systems. Class V cavities were restored with either one or three increments of RBC to determine whether the restorative method affected microleakage.

MATERIALS AND METHODS

60 extracted human premolars and molars were randomly assigned to 6 groups for bonding with Clearfil Liner Bond 2V or Etch & Prime 3.0 or Prime & Bond NT. The latter, using a total-etch technique, was used as a control. Cavities were cut in both the buccal and lingual surfaces. Half of each preparation was in enamel and half was in cementum/dentin. The teeth were thermocycled and the restorations examined microscopically for leakage using Procion Brilliant Red as a marker. SEM microphotographs were prepared from dye-labeled and non dye-labeled areas to illustrate the micromorphology of the systems.

RESULTS

None of the groups showed microleakage at the enamel margins. All groups showed microleakage at the gingival margins. At the gingival margin, there was no significant difference between the groups irrespective of the bonding material (Kruskal-Wallis: ANOVA P=0.2113). No significant difference was observed with each material when the bulk filling (one increment) technique was compared with the three-increment technique. SEM showed that the self-etching materials produced a shallower depth of etch, and a less abundant resin tag complex than the material using a separate phosphoric acid gel. In dye-labeled areas, debonding was predominantly cohesive in resin.

CLINICAL SIGNIFICANCE

Gingival margin microleakage is not prevented by either restoring cavities with self-etching materials of the control using a total-etch technique.

Authors+Show Affiliations

University of Edinburgh, Scotland, UK. ariosantini@hotmail.comNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

11572288

Citation

Santini, A, et al. "Effect of Composite Resin Placement Techniques On the Microleakage of Two Self-etching Dentin-bonding Agents." American Journal of Dentistry, vol. 14, no. 3, 2001, pp. 132-6.
Santini A, Plasschaert AJ, Mitchell S. Effect of composite resin placement techniques on the microleakage of two self-etching dentin-bonding agents. Am J Dent. 2001;14(3):132-6.
Santini, A., Plasschaert, A. J., & Mitchell, S. (2001). Effect of composite resin placement techniques on the microleakage of two self-etching dentin-bonding agents. American Journal of Dentistry, 14(3), 132-6.
Santini A, Plasschaert AJ, Mitchell S. Effect of Composite Resin Placement Techniques On the Microleakage of Two Self-etching Dentin-bonding Agents. Am J Dent. 2001;14(3):132-6. PubMed PMID: 11572288.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of composite resin placement techniques on the microleakage of two self-etching dentin-bonding agents. AU - Santini,A, AU - Plasschaert,A J, AU - Mitchell,S, PY - 2001/9/27/pubmed PY - 2002/1/5/medline PY - 2001/9/27/entrez SP - 132 EP - 6 JF - American journal of dentistry JO - Am J Dent VL - 14 IS - 3 N2 - PURPOSE: To evaluate microleakage of Class V resin-based composites (RBC) bonded with two self-etching dentin adhesive systems. Class V cavities were restored with either one or three increments of RBC to determine whether the restorative method affected microleakage. MATERIALS AND METHODS: 60 extracted human premolars and molars were randomly assigned to 6 groups for bonding with Clearfil Liner Bond 2V or Etch & Prime 3.0 or Prime & Bond NT. The latter, using a total-etch technique, was used as a control. Cavities were cut in both the buccal and lingual surfaces. Half of each preparation was in enamel and half was in cementum/dentin. The teeth were thermocycled and the restorations examined microscopically for leakage using Procion Brilliant Red as a marker. SEM microphotographs were prepared from dye-labeled and non dye-labeled areas to illustrate the micromorphology of the systems. RESULTS: None of the groups showed microleakage at the enamel margins. All groups showed microleakage at the gingival margins. At the gingival margin, there was no significant difference between the groups irrespective of the bonding material (Kruskal-Wallis: ANOVA P=0.2113). No significant difference was observed with each material when the bulk filling (one increment) technique was compared with the three-increment technique. SEM showed that the self-etching materials produced a shallower depth of etch, and a less abundant resin tag complex than the material using a separate phosphoric acid gel. In dye-labeled areas, debonding was predominantly cohesive in resin. CLINICAL SIGNIFICANCE: Gingival margin microleakage is not prevented by either restoring cavities with self-etching materials of the control using a total-etch technique. SN - 0894-8275 UR - https://www.unboundmedicine.com/medline/citation/11572288/Effect_of_composite_resin_placement_techniques_on_the_microleakage_of_two_self_etching_dentin_bonding_agents_ DB - PRIME DP - Unbound Medicine ER -