Microleakage of Class V compomer and light-cured glass ionomer restorations.

Abstract

STATEMENT OF PROBLEM:

Resin-modified (light-cured) glass ionomer and polyacid-modified composite resin (compomer) restorations are popular choices for the restoration of root caries and cervical abrasion/erosion lesions, but clinical studies are relatively few and have been published primarily as abstracts.

PURPOSE:

In the absence of adequate clinical data, the marginal integrity of restorations of the above two types of material was compared in vitro. The microleakage of restorations of two light-cured glass ionomer restorative materials and of one compomer material was evaluated.

METHODS AND MATERIAL:

Restorations of the three materials were placed in facial and lingual Class V cavity preparations in bovine incisors. All preparations were centered on the cementoenamel junction and were prepared with 45-degree enamel bevels. After thermal cycling, teeth were immersed in methylene blue dye, then sections of the restorations (n = 16) were visually evaluated.

RESULTS:

Dye penetration was observed at approximately 20% of restoration margins for all three materials, with the greatest incidence of severe leakage in the compomer restorations.

CONCLUSION:

No significant difference in microleakage among the three materials (ANOVA; p > 0.05) was found.

• Authors: W W Brackett, T D Gunnin, R O Gilpatrick, W D Browning
• Journal: The Journal of prosthetic dentistry (J Prosthet Dent) Vol. 79 Issue 3 Pg. 261-3 (Mar 1998) ISSN: 0022-3913 [Print] United States
• PMID: 9553876 (Publication Type: Comparative Study, Journal Article)

Chemical References

• Compomers
• Composite Resins
• Dyract
• Glass Ionomer Cements
• Methacrylates
• Silicates
• Vitremer
• Fuji glass-ionomer lining cement

Topics

• Animals
• Cattle
• Compomers
• Composite Resins
• Dental Leakage
• Dental Marginal Adaptation
• Dental Restoration, Permanent (methods)
• Glass Ionomer Cements
• Methacrylates
• Silicates