Journal of Endodontics
Volume 32, Issue 2 , Pages 120-122, February 2006

Effects of an Intracanal Glass Ionomer Barrier on Coronal Microleakage in Teeth with Post Space

  • Joseph C. Mavec, DDS, MS

      Affiliations

    • Naval Postgraduate Dental School, Bethesda, Maryland
  • ,
  • Scott B. McClanahan, DDS, MS

      Affiliations

    • Naval Postgraduate Dental School, Bethesda, Maryland
    • Corresponding Author InformationAddress requests for reprint to Dr. Scott B. McClanahan, 5419 Flint Tavern Place, Burke, VA 22015-2109
  • ,
  • Glenn E. Minah, DDS, PhD

      Affiliations

    • Baltimore College of Dental Surgery, Dental School, University of Maryland, Baltimore, Maryland
  • ,
  • James D. Johnson, DDS, MS

      Affiliations

    • Naval Postgraduate Dental School, Bethesda, Maryland
  • ,
  • Robert E. Blundell Jr, DDS

      Affiliations

    • Naval Postgraduate Dental School, Bethesda, Maryland

Abstract 

Bacterial microleakage of the remaining gutta-percha in teeth prepared for post space with and without the use of an intracanal glass ionomer barrier was evaluated. Forty distal roots of mandibular molars were instrumented, obturated with gutta-percha and AH Plus sealer, and post spaces created. Teeth were divided as follows: Group I, 3 mm of gutta-percha; group II, 4 mm of gutta-percha; group III, 2 mm of gutta-percha plus 1 mm of Vitrebond; and group IV, 3 mm gutta-percha plus 1 mm Vitrebond. The roots were suspended in Rogosa SL broth and Lactobacilli casei was used as a microbial marker. At the end of 92 days, the mean number of days for the broth to turn turbid was group I, 23.8; group II, 43.0; group III, 57.4, and group IV, 70.5. A two-way ANOVA showed differences between the groups and a post hoc Tukey HSD analysis revealed the following significant differences (p < 0.05): Group I leaked faster than groups III and IV and group II leaked faster than group IV. In clinical situations of teeth with compromised crown-root ratio that require a post and core, 1 mm of Vitrebond over 2 or 3 mm remaining gutta-percha could reduce the risk of recontamination of the apical gutta-percha.

Key Words:  Coronal microleakage , glass ionomer , intraorifice barrier , intracanal barrier , post and core , post space

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PII: S0099-2399(05)00073-7

doi:10.1016/j.joen.2005.10.033

Journal of Endodontics
Volume 32, Issue 2 , Pages 120-122, February 2006