A Comparative Evaluation of the Vertical Root Fracture Resistance of Endodontically Treated Teeth using Different Root Canal Sealers: An in vitro Study

Abstract

Objective: The objective of this study is to evaluate the vertical root fracture resistance of endodontically treated teeth obturated with-Tubli-Seal EWT/Gutta-percha, AH Plus/Gutta-percha, Epiphany SE sealer/Epiphany point. Study design: Sixty-five single rooted premolars were decoronated and root length was 14 mm for each specimen. Fifty five teeth were enlarged up to ISO size 40 master apical file with stainless steel K-files using standardized preparation and remaining ten teeth were served as negative control. Then teeth were randomly assigned into different groups depending on sealer used for obturation as follows: Group 1: Negative control-no instrumentation was performed. Group 2: Positive control-gutta-percha with out the use of any sealer. Group 3: Experimental group-gutta-percha and Tubli-Seal EWT root canal sealer. Group 4: Experimental group-gutta-percha and AH Plus. Group 5: Experimental group-epiphany SE sealer and epiphany points. After 72 hours, the specimens were embedded in autopolymerizing resin leaving 7 mm of each root exposed and were subjected to fracture testing under universal testing machine at a crosshead speed of 1.0 mm per minute until the root fractured. Results were statistically analyzed using one-way ANOVA and independent t-test. Results: Showed that Epiphany SE sealer/Epiphany points showed highest mean fracture resistance and Tubli-Seal EWT group showed the least fracture resistance of all the materials tested. There was no statistically significant difference among experimental groups. Conclusion: Epiphany SE sealer/Epiphany points demonstrated highest fracture resistance values than the other materials tested and intact tooth had highest resistance against vertical root fracture. Clinical significance: Epiphany SE sealer/Epiphany points may be one of the materials of choice in the endodontic treatment of teeth.

Resistance of Teeth with Simulated Incomplete Rhizogenesis with Intraradicular Post or Root Canal Filling

“…The root canal filling with Epiphany/Resilon system in an IR simulated model did not promote the increase of root fracture strength. These results are not in accordance with previous studies, 25,26,39 in which a model with single-rooted human teeth with complete rhizogenesis was employed. However, the results of the present study are in accordance with Hemalatha et al 2009, 40 who studied the fracture strength of human teeth with simulated IR and observed that the root canal filling with Resilon/Epiphany system did not increase the root resistance.…”

“…25,26 Therefore, the use of the MTA plug and root canal filling with Epiphany/ Resilon system could lead to a higher root resistance in teeth with incomplete rhizogenesis. The aim of this study was to in vitro evaluate the fracture strength of bovine incisors, using a model of simulated incomplete rhizogenesis, after different intraradicular treatments.…”

Data on the push out bond strength of three different root canal treatment sealers

“…The epoxy resin based sealer (AH Plus) has good penetration in micro irregularities due to high creep capacity and high polymerization time. These properties facilitate the interlocking between sealer and dentin, which allied to the cohesion among molecules, promotes larger adhesion and higher resistance to the sealer dislodgement from dentin surface [ 9 ]. We used single-cone obturation technique in the present study which can also result in a greater sealer thickness which in turn can influence the sealing ability of the root canal filling except when using AH Plus sealer.…”