In Vitro Effects of External Pressure Changes on the Sealing Ability under Simulated Diving Conditions
2012 | journal article. A publication with affiliation to the University of Göttingen.
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In Vitro Effects of External Pressure Changes on the Sealing Ability under Simulated Diving Conditions
Stoetzer, M.; Ruecker, M.; Koch, A.; Ziebolz, D.; Kokemüller, H.; Kaempf, C. & Gellrich, N.-C. et al. (2012)
ISRN Dentistry, 2012 pp. 1-5. DOI: https://doi.org/10.5402/2012/418609
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- Authors
- Stoetzer, Marcus; Ruecker, Martin; Koch, Andreas; Ziebolz, Dirk; Kokemüller, Horst; Kaempf, Christina; Gellrich, Nils-Claudius; von See, Constantin
- Abstract
- Aim. To measure and validate the permeability of pressure changes in correlation to different root filling techniques. Methods. Eighty extracted single-rooted teeth were randomly assigned to one of eight groups of ten teeth. Following standardized instrumentation and irrigation, root canal fillings were performed using either cold lateral condensation, a warm carrier-based gutta-percha obturation technique, a warm carrier-based Resilon, or warm gutta-percha compaction with the downpack/backfill technique. After insertion of a pressure sensor within the pulp chamber ten teeth of each group then underwent simulated dives with pressure measurement and the other ten a dye penetration test during simulated dives to 5.0 bar. Differences were analyzed statistically (P < 0.05) using one-way analysis of variance (ANOVA). Results.When the warm carrier-based gutta-percha obturation technique and vertical gutta-percha obturation techniques were used, there was significant lower intrapulpal pressure to experimental chamber pressure (P > 0.05). When cold lateral condensation or carrier-based Resilon as used, pressure was sometimes almost completely equalized. Conclusions. Warm gutta-percha obturation techniques provide a largely pressure-tight seal whereas the Resilon obturation technique and cold lateral condensation appear to be unsuitable to pressure changes.
- Issue Date
- 2012
- Journal
- ISRN Dentistry
- ISSN
- 2090-438X
- Language
- English