Experimental tricalcium silicate cement induces reparative dentinogenesis. Issue 9 (September 2018)

• Record Type: Journal Article
• Authors: Li, Xin; Pedano, Mariano Simón; Camargo, Bernardo; Hauben, Esther; De Vleeschauwer, Stéphanie; Chen, Zhi; De Munck, Jan; Vandamme, Katleen; Van Landuyt, Kirsten; Van Meerbeek, Bart
• Is Part Of: Dental materials. Volume 34:Issue 9(2018)
• Page Start: 1410
• Page End: 1423
• Publication Date: 2018-09
• Subjects: Pulp capping -- Tricalcium silicate cement -- Minipig -- Reparative dentin; Dentistry -- Periodicals; Dental materials -- Periodicals; 617.695
• DOI: 10.1016/j.dental.2018.06.016
• Languages: English
• ISSNs: 0109-5641

Abstract

Highlights: TCS 50 induced no discoloration in mechanically exposed minipig pulps up to 70 days. 40% of the pulps revealed a mild/moderate inflammation 7 days after direct pulp capping. TCS 50 generated no inflammation but complete reparative dentin after 70 days. Abstract: Objectives: To overcome shortcomings of hydraulic calcium-silicate cements (hCSCs), an experimental tricalcium silicate (TCS) cement, named 'TCS 50', was developed. In vitro research showed that TCS 50 played no negative effect on the viability and proliferation of human dental pulp cells, and it induced cell odontogenic differentiation. The objective was to evaluate the pulpal repair potential of TCS 50 applied onto exposed minipig pulps. Methods: Twenty permanent teeth from three minipigs were mechanically exposed and capped using TCS 50; half of the teeth were scheduled for 7-day and the other half for 70-day examination (n = 10). Commercial hCSCs ProRoot MTA and TheraCal LC were tested as references (n = 8). Tooth discoloration was examined visually. After animal sacrifice, the teeth were scanned using micro-computed tomography; inflammatory response at day 7 and day 70, mineralized tissue formation at day 70 were assessed histologically. Results: Up to 70 days, TCS 50 induced no discoloration, ProRoot MTA generated gray/black discoloration in all teeth. For TCS 50, 40.0% pulps exhibited a mild/moderate inflammation at day 7. No inflammation was detected and complete reparative dentin with tubular structures was formed in all pulps after 70 days. ProRoot MTA induced a similar response, TheraCal LC generated a less favorable response in terms of initial inflammation and reparative dentin formation; however, these differences were not significant (Chi-square test of independence: p > 0.05). Significance: TCS 50 induced reparative dentinogenesis in minipig pulps. It can be considered as a promising pulp-capping agent, also for aesthetic areas.