Learn More
Normal human dentin was demineralized in 0.6 N HCl and then extracted in 1.0 M NaCl, 0.5 M Tris/HCl, pH 7.6 in the presence of neutral protease inhibitors. All of the soluble phosphorus-containing proteins were extracted directly in the 0.6 N HCl demineralizing solution; none were collected in the 1.0 M NaCl neutral pH extraction. The principal(More)
Adult multipotent stem cells have been isolated from various non-neural tissues. Here, we report the isolation of multipotent stem cells from rat periodontal ligament (PDL) using neurosphere-forming culture system. Enzymatically dissociated PDL cells were cultured in serum-free basal medium containing EGF, bFGF, and LIF. Free-floating spheres expressing(More)
We have developed a technology for the electrical polarization and electrical characterization of hydroxyapatite (HA) microgranules. In order to improve handling of ceramic powders to fulfill complex geometrical demands, platelet-rich plasma (PRP) containing many growth factors was chosen as a carrier of HA microgranules. In this study, the effects of this(More)
The technology for electrical polarization and characterization of hydroxyapatite (HA) microgranules has been developed. This study aimed to examine and compare the efficacy of composites comprising electrically polarized HA (pHA) microgranules and platelet-rich plasma (PRP) or hyaluronan (HAN) in osteoconductivity. Composites of HA microgranules with or(More)
The odontoclast, which is morphologically similar to osteoclast, is thought to play a major role in root resorption of deciduous teeth. High collagenolytic activity has been detected in the root resorbing tissue. In order to identify collagenase-producing cells and the role of collagenase in root resorption of deciduous tooth, in situ hybridization of(More)
OBJECTIVE AND BACKGROUND It is not well known how periodontopathic bacteria colonize in the oral cavity during childhood. The purpose of this study was to investigate the distribution of periodontopathic bacteria in oral cavities of children and their parents and the relationship between the bacterial findings and clinical parameters. METHODS Fifty-six(More)
PURPOSE The purpose of this study was to characterize dental pulp and dental follicle stem/progenitor cells (DPSCs and DFSCs) from the same impacted supernumerary maxillary incisors (ISMIs). METHODS DPSCs and DFSCs were obtained from ISMIs of healthy children (six to 12 years old) by the outgrowth culture method and were compared for proliferation,(More)
OBJECTIVE The purpose of this study was to evaluate the pulpal response to an octacalcium phosphate (OCP)-based cement used as a pulp-capping material. STUDY DESIGN The pulps of 60 maxillary first molars of male Sprague-Dawley rats were exposed and then capped directly by using either OCP-based cement or a calcium hydroxide slurry (control). Histologic(More)
Previously, we have demonstrated that the extracellular matrix from dentin affects osteoclastic activity in co-culture between osteoclast and osteoblast-rich fraction from mouse marrow cells. In the present study, we aimed to investigate the mechanisms of dentin matrix extract-induced osteoclastogenesis in mouse bone marrow macrophages (BMMs). Dentin(More)