Short-term Effect of Four Root Filling Materials on the Flexural Strength of Human Root Dentin

Background: This study aimed to assess the effects of calcium hydroxide, Biodentine, calcium-enriched mixture (CEM) cement, and mineral trioxide aggregate (MTA) on root dentin flexural strength after a 30-day exposure period. Methods: This in vitro experimental study evaluated 25 freshly extracted sound human incisors with no caries or restorations. The apical 5 mm and the coronal two-thirds of the crowns were cut such that all samples had 10 mm length. Dentin samples (n=20 in each group) were then exposed to 2 mm thickness of calcium hydroxide, Biodentine, CEM cement, MTA, or saline (control) in petri dishes for 30 days. Finally, dentin samples were subjected to a three-point bending test after the intervention, and the flexural strength data were analyzed using one-way ANOVA, Tukey’s test, and t test. Results: Thirty-day exposure to all four biomaterials decreased the flexural strength of root dentin (P 0.05). Conclusions: In general, all four tested biomaterials decrease the dentin strength although this reduction is more prominent by calcium hydroxide.

[1]  S. Sahebi,et al.  The Long-Term Effect of Calcium Hydroxide, Calcium-Enriched Mixture Cement and Mineral Trioxide Aggregate on Dentin Strength , 2014, Iranian endodontic journal.

[2]  E. Kazazoğlu,et al.  A Review on Biodentine, a Contemporary Dentine Replacement and Repair Material , 2014, BioMed research international.

[3]  R. Verbeeck,et al.  Biodentine™ material characteristics and clinical applications: a review of the literature , 2014, European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry.

[4]  A. Milani,et al.  Cytotoxicity of calcium enriched mixture cement compared with mineral trioxide aggregate and intermediate restorative material. , 2012, Australian endodontic journal : the journal of the Australian Society of Endodontology Inc.

[5]  F. Tay,et al.  Effects of calcium silicate-based materials on the flexural properties of dentin. , 2012, Journal of endodontics.

[6]  M. Nabavizadeh,et al.  Short Term Effect of Calcium Hydroxide, Mineral Trioxide Aggregate and Calcium-Enriched Mixture Cement on the Strength of Bovine Root Dentin , 2012, Iranian endodontic journal.

[7]  Shahriar Shahriari,et al.  Cytotoxic effect of MTA and CEM cement in human gingival fibroblast cells. Scanning electronic microscope evaluation. , 2012, The New York state dental journal.

[8]  A. Jafarian,et al.  Histologic assessment of human pulp response to capping with mineral trioxide aggregate and a novel endodontic cement. , 2010, Journal of endodontics.

[9]  M. Eghbal,et al.  Periradicular regeneration after endodontic surgery with calcium-enriched mixture cement in dogs. , 2010, Journal of endodontics.

[10]  S. Asgary,et al.  Direct Pulp-Capping with Calcium Enriched Mixture in Primary Molar Teeth: A Randomized Clinical Trial , 2010, Iranian endodontic journal.

[11]  S. Kuttler,et al.  Mineral trioxide aggregate obturation: a review and case series. , 2009, Journal of endodontics.

[12]  A. Akbarzadeh Baghban,et al.  Ion release and pH of a new endodontic cement, MTA and Portland cement , 2009, Iranian endodontic journal.

[13]  M. Eghbal,et al.  MTA pulpotomy of human permanent molars with irreversible pulpitis. , 2009, Australian endodontic journal : the journal of the Australian Society of Endodontology Inc.

[14]  M. Eghbal,et al.  Sealing ability of a novel endodontic cement as a root-end filling material. , 2008, Journal of biomedical materials research. Part A.

[15]  S. Asgary,et al.  Antibacterial effects of five different root canal sealing materials. , 2008, Journal of oral science.

[16]  S. Shahabi,et al.  The properties of a new endodontic material. , 2008, Journal of endodontics.

[17]  J. Andreasen,et al.  Fracture resistance and histological findings of immature teeth treated with mineral trioxide aggregate. , 2008, Dental traumatology : official publication of International Association for Dental Traumatology.

[18]  Brett Rosenberg,et al.  The effect of calcium hydroxide root filling on dentin fracture strength. , 2007, Dental traumatology : official publication of International Association for Dental Traumatology.

[19]  O. Zmener,et al.  An in vitro study of the pH of three calcium hydroxide dressing materials. , 2007, Dental traumatology : official publication of International Association for Dental Traumatology.

[20]  M. N. G. Mancini,et al.  Vehicle influence on calcium hydroxide pastes diffusion in human and bovine teeth. , 2006, Dental traumatology : official publication of International Association for Dental Traumatology.

[21]  A. Yap,et al.  X-ray diffraction analysis of mineral trioxide aggregate and Portland cement. , 2006, International endodontic journal.

[22]  J. V. von Fraunhofer,et al.  Fracture resistance of human root dentin exposed to intracanal calcium hydroxide. , 2005, Journal of endodontics.

[23]  N. Sarkar,et al.  Physicochemical basis of the biologic properties of mineral trioxide aggregate. , 2005, Journal of endodontics.

[24]  P. Eleazer,et al.  The effect of three commonly used endodontic materials on the strength and hardness of root dentin. , 2002, Journal of endodontics.

[25]  J. Andreasen,et al.  Long-term calcium hydroxide as a root canal dressing may increase risk of root fracture. , 2002, Dental traumatology : official publication of International Association for Dental Traumatology.

[26]  P. Anderson,et al.  Effects of sodium hypochlorite solution on root dentine composition , 2002, Journal of materials science. Materials in medicine.

[27]  M. Iwaku,et al.  Histological observations of hard tissue barrier formation in amputated dental pulp capped with alpha-tricalcium phosphate containing calcium hydroxide. , 1994, Endodontics & dental traumatology.

[28]  T R Pitt Ford,et al.  Sealing ability of a mineral trioxide aggregate when used as a root end filling material. , 1993, Journal of endodontics.

[29]  R. Holland,et al.  Ability of a new calcium hydroxide root canal filling material to induce hard tissue formation. , 1985, Journal of endodontics.

[30]  M. Iwaku,et al.  Bovine Teeth as Possible Substitutes in the Adhesion Test , 1983, Journal of dental research.

[31]  M. R. Lund,et al.  Effect of designs of Class 2 preparations on resistance of teeth to fracture. , 1983, Operative dentistry.

[32]  M. Brännström,et al.  Bacteria and pulpal reactions under silicate cement restorations. , 1979, The Journal of prosthetic dentistry.

[33]  F. J. Fisher,et al.  Calcium hydroxide base materials. An investigation into the relationship between chemical structure and antibacterial properties , 1978, British Dental Journal.

[34]  J. Andreasen.  Treatment of fractured and avulsed teeth. , 1971, ASDC journal of dentistry for children.