Self-sealing ability of OCP-mediated cement as a deciduous root canal filling materia

Abstract

The densification process and canal sealing ability of octacalcium phosphate (OCP)-mediated cement were investigated for developing biocompatible and biodegradable root canal filling material for deciduous root. The results of the characterization revealed that the starting paste, which consisted of monocalcium phosphate monohydrate, calcium carbonate, and α-tricalcium phosphate, gradually transformed into carbonate apatite for 6 weeks of immersion in medium with 30% fetal bovine serum (MEM30). The canal sealing ability was estimated by dye penetration test. Three kinds of conditions were chosen for the test: one was the cement just after filling the single-rooted extracted human roots; the others were the cement aged in MEM30 for 1 and 6 weeks after filling, respectively. All roots were then immersed in India ink for 3 days. The penetration depth of OCP-mediated cement decreased significantly with time. This demonstrates that OCP-mediated cement has self-sealing ability.

Physicochemical properties and filling capacity of an experimental iodoform-based paste in primary teeth

“…The physicochemical properties were tested according to the American National Standards Institute/American Dental Association ANSI/ADA 57-2000 specification for endodontic sealing materials, 19 which recommends that the trials must be performed at room temperature of 23°C ± 2°C. 20…”

Calcium Phosphate-Based Biomaterials for Bone Repair

“…OCP has good osteoinductivity and is widely used in bone repair research, including the coating of metal grafts, the use of CaP bone cement, and the construction of composite bone repair scaffolds [ 135 , 136 , 137 ]. OCP/Col composite scaffolds constructed from OCP particles and collagen have a higher osteoconductivity than OCP alone, and the osteoconductivity is positively correlated with the dose of OCP [ 138 , 139 ].…”

Calcium Orthophosphates (CaPo ) and Dentistry

“…Namely, OCP might be used as a coating [194,195], a component of biocomposites [195,196] and self-setting formulations [197,198]. In addition, OCP was tried in pulpectomy [193], as a direct pulp capping material [197] and for alveolar ridge augmentation [196,199].…”