title: Mechanical properties of new dental pulp-capping materials.
abstract: The mechanical properties of pulp-capping materials may affect their resistance to fracture during placement of a final restorative material or while supporting an overlying restoration over time. The purpose of this study was to compare the compressive strength, flexural strength, and flexural modulus of 2 new pulp-capping materials (TheraCal LC and Biodentine), mineral trioxide aggregate (MTA), and calcium hydroxide over time. Specimens were created in molds and tested to failure in a universal testing machine after 15 minutes, 3 hours, and 24 hours. The MTA specimens did not set at 15 minutes. At all time periods, TheraCal LC had the greatest compressive and flexural strengths. After 3 and 24 hours, Biodentine had the greatest flexural modulus. TheraCal LC had greater early strength to potentially resist fracture during immediate placement of a final restorative material. Biodentine had greater stiffness after 3 hours to potentially provide better support of an overlying restoration under function over time.
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Nielsen
authors.forename: Jeffery A
authors.initials: JA
authors.lastname: Casey
authors.forename: Richard A
authors.initials: RA
authors.lastname: VanderWeele
authors.forename: Kraig S
authors.initials: KS
authors.lastname: Vandewalle
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry / Q000627:therapeutic use; D017610:Calcium Compounds / Q000737:chemistry / Q000627:therapeutic use; D019245:Compressive Strength; D003799:Dental Stress Analysis; D004338:Drug Combinations; D006801:Humans; D010087:Oxides / Q000737:chemistry / Q000627:therapeutic use; D057872:Pulp Capping and Pulpectomy Agents / Q000737:chemistry* / Q000627:therapeutic use; D017640:Silicates / Q000737:chemistry / Q000627:therapeutic use; D013718:Tensile Strength
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D010087:Oxides; D057872:Pulp Capping and Pulpectomy Agents; D017640:Silicates; C086631:mineral trioxide aggregate; C506393:tricalcium silicate