Fracture resistance of teeth obturated with two different types of Mineral Trioxide Aggregate Cements

Authors

  • Nidambur Vasudev Ballal Department of Conservative Dentistry & Endodontics - Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India.
  • Sheetal Rao Department of Conservative Dentistry & Endodontics - Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India.
  • Junsang Yoo Seoul National University School of Dentistry - Seoul - Korea.
  • Kishore Ginjupalli Department of Dental Materials - Manipal College of Dental Sciences, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India.
  • Manuel Toledano University of Granada - Faculty of Dentistry - Dental Materials Section - Colegio Máximo de Cartuja s/n - 18071 Granada - Spain.
  • Nadin Al-Haj Husain Department of Reconstructive Dentistry and Gerodontology - School of Dental Medicine - University of Bern - Switzerland.
  • Mutlu Özcan Division of Dental Biomaterials, Clinic for Reconstructive Dentistry - Center for Dental and Oral Medicine - University of Zurich - Zurich - Switzerland.

DOI:

https://doi.org/10.14295/bds.2020.v23i3.2000

Abstract

Objective: Endodontically obturated teeth have lower fracture resistance depending on the obturating material and technique. The purpose of this study was therefore to evaluate the influence of ProRoot MTA (Dentsply Sirona, Tulsa Division) and OrthoMTA III (BioMTA, Daejeon, Korea) as an obturating material on the fracture resistance of endodontically treated teeth. Material and Methods: Thirty extracted human maxillary central incisors were decoronated and instrumented using Protaper instruments (size F5). Irrigation was performed with 2.5% sodium hypochlorite between each instrument change followed by 7% maleic acid for one minute. Finally, canals were flushed with 5 ml of PBS solution for one minute. Samples were then divided into three groups. Group I- positive control (no root canal filling); Group II- obturation with ProRoot MTA; Group III- obturation with OrthoMTA III. Ten teeth were randomly selected as a negative control in which no treatment was performed. All the specimens were then subjected to fracture strength testing using universal testing machine. For evaluation of biomineralization, six maxillary central incisors were divided into two groups. Group I obturated with ProRoot MTA and group II obturated with OrthoMTA III. These samples were subjected to SEM analysis. Results: Positive control group demonstrated the least fracture resistance, while OrthoMTA III group showed the highest fracture resistance. There was no significant difference between negative control group and ProRoot MTA groups (p=0.821). OrthoMTA III group showed better tubular biomineralization when compared to ProRoot MTA. Conclusions: Root canals obturated with OrthoMTA III had better fracture resistance and increased tubular biomineralization compared to ProRoot MTA. Since root canals obturated with OrthoMTA III had better fracture resistance, it can be used as a promising obturating material.

Keywords

Biomineralization; Fracture Resistance; OrthoMTA III; ProRoot MTA; Root Canal; Tubular.

References

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Published

2020-06-30

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Clinical or Laboratorial Research Manuscript