Penetration of dentinal tubules by endodontic sealer cements in extracted teeth and in vivo
- 18 September 2007
- journal article
- research article
- Published by Wiley in International Endodontic Journal
- Vol. 40 (11), 873-881
- https://doi.org/10.1111/j.1365-2591.2007.01307.x
Abstract
To compare the depth and consistency of penetration of three different root canal sealer cements into dentinal tubules in extracted teeth and to measure the penetration of an epoxy resin-based sealer cement in vivo.Root canals of 50 extracted human pre-molar teeth were prepared and obturated using three different sealer cements based on epoxy resin (AH26), zinc oxide eugenol (Pulp Canal Sealer EWT) and methacrylate resin (EndoREZ). Five teeth filled without sealer were used as controls. Teeth were sectioned and prepared for observation using scanning electron microscopy. A further 12 teeth with a history of successful root filling and subsequent extraction were collected and sectioned. The depth of sealer penetration into dentinal tubules was measured and the consistency and appearance of the sealer within the tubules observed.AH26 demonstrated the deepest penetration (1337 microm), followed by EndoREZ (863 microm) and Pulp Canal Sealer EWT (71 microm). The difference in penetration between all sealer groups was found to be statistically significant (P < 0.05). The resin-based sealers appeared to penetrate tubules more consistently. In the clinical cases, all teeth demonstrated sealer penetration to varying depths (98-1490 microm).The depth and consistency of dentinal tubule penetration of sealer cements appears to be influenced by the chemical and physical characteristics of the materials. Resin-based sealers displayed deeper and more consistent penetration. Penetration depths observed for the epoxy resin-based sealer in vivo were consistent with that found in the experimental model.This publication has 30 references indexed in Scilit:
- Influence of smear layer on depth of penetration of three endodontic sealers: an SEM studyDental Traumatology, 2007
- The Influence Of Filling Technique On Depth Of Tubule Penetration By Root Canal Sealer: A Study Using Light Microscopy And Digital Image ProcessingAustralian Endodontic Journal, 2004
- Influence of infection at the time of root filling on the outcome of endodontic treatment of teeth with apical periodontitisInternational Endodontic Journal, 1997
- Influence of infection at the time of root filling on the outcome of endodontic treatment of teeth with apical periodontitisInternational Endodontic Journal, 1997
- The smear layer: a phenomenon in root canal therapyInternational Endodontic Journal, 1995
- Dentine tubule infection and endodontic therapy implicationsInternational Endodontic Journal, 1994
- The penetration of root canal sealers into dentinai tubules. A scanning electron microscopic studyInternational Endodontic Journal, 1993
- The effect of smear layer upon the coronal leakage of gutta‐percha root fillings and a glass ionomer sealerInternational Endodontic Journal, 1992
- Disinfection by endodontic irrigants and dressings of experimentally infected dentinal tubulesDental Traumatology, 1990
- A Method for Demonstrating Resin Penetration into DentinJournal of Dental Research, 1977