Effect of plasma arc curing on the microleakage of Class V resin-based composite restorations.

Abstract

PURPOSE:

To evaluate the effect of plasma arc light-curing on the microleakage of Class V resin-based composite (RBC).

MATERIALS AND METHODS:

Facial and lingual Class V cavities were prepared at the cemento-enamel junction of extracted third molars. Restorations of the two materials (Z250; Amelogen) were placed, using the supplied dentin adhesives (Single Bond; PQ 1, respectively), and light-cured by either a halogen light curing unit (H) or a plasma arc curing unit (P). After thermal cycling, the teeth were immersed in methylene blue dye, then sections of the restored teeth were visually assessed for leakage.

RESULTS:

No leakage was observed at the interface between enamel and RBC in any restoration in this study. At gingival margins, the incidence of leakage (slight/severe) was: Z250 H = 2/4, P = 6/6; Amelogen H = 3/4, P = 1/12, where n = 16. The greatest incidence of leakage was observed in restorations cured by the plasma arc method. A two-way ANOVA of leakage data rankings showed curing method to be a significant factor (P = 0.002), restorative material not to be a significant factor (P = 0.24), and no significant interaction between material and curing method (P = 0.38).

• Authors: W W Brackett, L D Haisch, D A Covey
• Journal: American journal of dentistry (Am J Dent) Vol. 13 Issue 3 Pg. 121-2 (Jun 2000) ISSN: 0894-8275 [Print] United States
• PMID: 11763946 (Publication Type: Clinical Trial, Journal Article, Randomized Controlled Trial)

Chemical References

• Coloring Agents
• Composite Resins
• Dentin-Bonding Agents
• PermaQuik
• amelogen
• single bond
• Water
• Bisphenol A-Glycidyl Methacrylate
• Methylene Blue

Topics

• Analysis of Variance
• Bisphenol A-Glycidyl Methacrylate (chemistry, radiation effects)
• Coloring Agents
• Composite Resins (chemistry, radiation effects)
• Dental Cavity Preparation (classification)
• Dental Cementum (ultrastructure)
• Dental Enamel (ultrastructure)
• Dental Leakage (classification)
• Dental Restoration, Permanent (classification)
• Dentin-Bonding Agents (chemistry, radiation effects)
• Humans
• Immersion
• Light
• Methylene Blue
• Molar, Third
• Photochemistry (instrumentation)
• Temperature
• Thermodynamics
• Tooth Cervix (ultrastructure)
• Water