Reinforcement effect of intra-orifice barrier materials in teeth treated with regenerative endodontic procedure: Research article

Abstract

Background. Regenerative endodontic treatment (RET) is a clinically advanced procedure for necrotic immature teeth. However, root canal walls of these teeth are brittle especially in the cervical region and need reinforcement. This in vitro study is conducted to evaluate the effect of intra-orifice barrier materials on the fracture resistance of immature teeth treated with regenerative procedure. Methods. Forty-eight maxillary central incisors were used. Twelve intact teeth were selected for the control group. Remained teeth were prepared using peeso drills to simulate immature teeth and assigned into three groups according to the intra-orifice barrier material placed over MTA (n=12); Composite resin (CR), ProRoot MTA and Resin-modified glass ionomer cement (RMGIC). Fracture strength test was applied using a universal testing machine. One-way ANOVA and Tukey post hoc tests were used at P=0.05. Results. A significant difference was obtained among groups (P<0.05). MTA showed the lowest fracture resistance (P<0.05). However, no significant difference was found among RMGIC, CR, and control groups (P>0.05). Conclusion. Intra-orifice restorative materials have reinforcement affect in immature teeth treated with regenerative endodontic procedure. RMGIC or CR can be regarded as a viable choice to reduce the occurrence of cervical root fracture of immature teeth treated with a regenerative therapy.

Evaluating the Effect of Different Intra-Orifice Barriers and Various Bleaching Agents on the Fracture Resistance of Teeth After the Walking Bleach Procedure: An In Vitro Study

“…The reinforcement to the endodontically treated teeth provided by MTA is also questionable. In the in vitro study conducted by Aktemur Türker et al on immature necrotic teeth with different intra-orifice sealers, MTA showed the lowest fracture strength than other materials: composite resin and RMGIC [ 38 ]. The study by Özyurek et al, which analyzed the push-out bond strength of intra-orifice sealers, concluded that ProRoot MTA and Biodentine calcium silicate cement have lower bond strength than SureFil SDR and EverX Posterior bulk-fill composite resins [ 39 ].…”

Purse-indigitation mechanical anastomosis vs. traditional mechanical anastomosis undergoing McKeown esophagectomy: a retrospective comparative cohort study

“…There are certain notable factors associated with anastomotic leak including the absence of serosa layer, longitudinal orientation of the muscle fibers, the segmental blood supply, and tension of anastomosis. It has been demonstrated that wrapping the pedicled omental flap for esophagogastric anastomosis and using fibrin glue may help to promote sealing and decrease the leak rate ( 4 , 5 ). Stapling techniques during esophagectomy have often been employed.…”