Behavior of mineral trioxide aggregate apical plugs and root fillings under cyclic loading

Abstract

The methodology reliably monitored fluid flow during cyclic loading. There was no difference between a 4-mm MTA apical plug and full-length MTA root filling after cyclic loading using a dynamic fluid-flow monitoring technique.

Reinforcement of Simulated Immature Permanent Teeth after Mineral Trioxide Aggregate Apexification

“…Bishop et al (26) demonstrated that the functional loading had a great impact on the seal of the root-filling materials. Cyclic loading caused MTA disintegration when the entire root canal was filled with MTA (27). This may partly explain why there is no significant difference of strength between the MTA and the gutta-percha groups in our study.…”

An In-vitro fracture strength assessment of endodontically treated teeth with different root-end materials

“…Several studies demonstrated that cyclic functional loading and thermocycling have a negative impact on the mechanical properties of root filling materials and can cause a 20% to 30% reduction in fracture strength ( 17 , 18 ). Hence, fracture strength was assessed immediately and after the aging process in the study.…”

“…Despite beneficial outcomes of calcium silicate materials in clinical and laboratory investigations, information on the root reinforcing capacity of these materials is limited. Moreover, it was demonstrated that cyclic functional load and thermal changes have a negative impact on the mechanical properties of root filling materials, reducing up to 30% of teeth fracture strength ( 17 , 18 ). Therefore, this laboratory investigation aimed to examine the long-term fracture strength of surgical endodontically treated teeth retro-filled with different materials.…”

Clinical applications of calcium silicate‐based materials: a narrative review

“…To increase the fracture resistance of immature teeth, one study recommended the filling of the entire canal with CSCs, 73 while another study suggested using MTA as an apical plug rather than in the entire root canal 74 . A study using a dynamic fluid‐flow monitoring technique reported that there was no difference between a 4‐mm MTA apical plug and a full‐length MTA root filling after cyclic loading 75 . In various studies that evaluated fracture resistance of immature teeth, no significant differences were found between MTA, Biodentine, Bioaggragate and CEM cement, 76,77 while in a study using finite element analysis, MTA was found to induce less stress on apical root dentine of immature teeth than Biodentine 73 …”

“…A CSC barrier of at least 4 mm thickness 75 can be placed in the apical portion of the root canal using appropriate pluggers. Because of the open apex, the plug material can be inadvertently extruded into the periradicular tissues.…”