Influence of root canal obturation using gutta-percha with three different sealers on root reinforcement of endodontically treated teeth. An in vitro comparative study of mandibular incisors

Abstract

Aim:The purpose of this in vitro study was to evaluate the vertical force required to fracture mandibular incisor teeth, obturated using gutta-percha with three different sealers.Materials and Methods:Seventy-five extracted mandibular incisors with intact and fully formed apices, exhibiting single root and canal were acquired. The teeth were decoronated obtaining a root segments of 15 mm and were divided into five groups (n = 15). Group 1: left uninstrumented and unfilled (negative control). For groups 2–5, samples were instrumented using Protaper NEXT (X1 and X2). Group 2: left unobturated (positive control). Groups 3–5 were obturated using lateral compaction by gutta-percha and three sealers (AH Plus®, Apexit®, and EndoSequence® BioCeramic™). All the samples were prepared for fracture testing and vertical load was applied till fracture. Statistical analysis was performed using ANOVA and Tukey's post hoc test, for the data recorded of the force required in Newton (N).Results:The load required to fracture exhibited a significant difference. The intergroup analysis revealed, samples obturated using bioceramic sealer exhibited higher fracture resistance (P < 0.01).Conclusion:The use of gutta-percha and a root canal sealer reinforces the root dentin, leading to increased fracture resistance against vertical forces. Bioceramic sealer group in them exhibited better results.

Fracture resistance of roots obturated with bio-ceramic and epoxy resin-based sealers: In vitro study

“…This was in agreement with earlier studies ( 10 , 11 ). In contrast to what was shown by three studies, which found that bioceramic-based sealers had statistically improved the fracture resistance of teeth ( 5 , 9 , 12 ).…”

Effect Of Two Calcium-Silicate and One Resin Sealers On The Fracture Resistance Of Root Dentin Using Different Treatments In Dog’s Teeth (An In Vivo Study)

“…This chemical bonding along with the deep penetration of the sealer into canal irregularities and dentinal tubules enhances the fracture resistance of teeth (33,34) . So, calcium silicate root canal sealers might have the potential to reinforce the instrumented teeth against vertical root fracture (35,36) .…”

Comparison of the Fracture Resistance of Root-Canal-Treated Premolars Obturated With Dissimilar Materials: An In Vitro Study

“…Our study findings agree with the findings of Dibaji et al, which demonstrated improved fracture resistance for AH+ and then bioceramic-based endodontic sealers such as TotalFill BC sealer [ 11 ]. Some other studies have shown superior fracture resistance for bioceramic-based endodontic sealers compared to AH+ sealers [ 4 , 12 ]. Additionally, Topcuolu et al showed a higher bioceramic FR, despite the fact that the difference between the groups failed to achieve statistical significance [ 13 ].…”

“…Endodontic obturation materials bond to the radicular dentin and may help improve the FR of the obturating materials [ 3 ]. When instrumented but not obturated canals are compared to sealers and lateral condensation, the roots are significantly strengthened [ 4 ]. Resilon and Gutta Percha root canal fillings, which have a lower modulus of elasticity than dentine, have little or no root-strengthening capacity [ 5 ].…”