Evaluation of selected properties of a new root repair cement containing surface pre-reacted glass ionomer fillers

• Published in: Clinical oral investigations Vol. 20; no. 8; pp. 2139 - 2148
• Main Authors: Yassen, Ghaeth H., Huang, Ruijie, Al-Zain, Afnan, Yoshida, Takamitsu, Gregory, Richard L., Platt, Jeffrey A.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2016; Springer Nature B.V
• Subjects: Aluminum; Aluminum Compounds - chemistry; Aluminum Compounds - pharmacology; Bond strength; Boron; Calcium Compounds - chemistry; Calcium Compounds - pharmacology; Cement; Dental cement; Dental Cements - chemistry; Dental Cements - pharmacology; Dentin; Dentistry; Drug Combinations; Endodontics; Enterococcus faecalis - drug effects; Glass Ionomer Cements - chemistry; Glass Ionomer Cements - pharmacology; Ions - pharmacokinetics; Materials Testing; Medicine; Needles; Original Article; Oxides - chemistry; Oxides - pharmacology; Porphyromonas gingivalis - drug effects; Root Canal Filling Materials - chemistry; Root Canal Filling Materials - pharmacology; Roots; Silicates - chemistry; Silicates - pharmacology; Sodium; Spectrophotometry, Atomic; Strontium; Surface Properties; Push-out bond strength; Ion release; MTA; Setting time; IRM; S-PRG fillers
• ISSN: 1432-6981; 1436-3771
• DOI: 10.1007/s00784-016-1715-5

Objective This study evaluated selected properties of a prototype root repair cement containing surface pre-reacted glass ionomer fillers (S-PRG) in comparison to mineral trioxide aggregate (MTA) and intermediate restorative material (IRM). Materials and methods The antibacterial effect of S-PRG, MTA, and IRM cements was tested against Porphyromonas gingivalis and Enterococcus faecalis after 1 and 3 days of aging of the cements. The set cements were immersed in distilled water for 4 h to 28 days, and ion-releasing ability was evaluated. Initial and final setting times of all cements were evaluated using Gilmore needles. The push-out bond strength between radicular dentin and all cements was tested at different levels of the roots. Results S-PRG and IRM cements, but not MTA cement, demonstrated significant antibacterial effect against P. gingivalis . All types of cements exhibited significant antibacterial effect against E. faecalis without being able to eliminate the bacterium. S-PRG cement provided continuous release of fluoride, strontium, boron, sodium, aluminum, and zinc throughout all tested time points. Both initial and final setting times were significantly shorter for S-PRG and IRM cements in comparison to MTA. The push-out bond strength was significantly lower for S-PRG cement in comparison to MTA and IRM at coronal and middle levels of the roots. Conclusions S-PRG cement demonstrated significant antibacterial effects against endodontic pathogens, multiple ion-releasing ability, relatively short setting time, and low bonding strength. Clinical relevance S-PRG cement can be used as a one-visit root repair material with promising antibacterial properties and ion-releasing capacity.