Topic
Pulp (tooth)
About: Pulp (tooth) is a research topic. Over the lifetime, 5963 publications have been published within this topic receiving 156417 citations. The topic is also known as: pulp.
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TL;DR: Postnatal human DPSCs are isolated that have the ability to form a dentin/pulp-like complex and are compared with human bone marrow stromal cells, known precursors of osteoblasts.
Abstract: Dentinal repair in the postnatal organism occurs through the activity of specialized cells, odontoblasts, that are thought to be maintained by an as yet undefined precursor population associated with pulp tissue. In this study, we isolated a clonogenic, rapidly proliferative population of cells from adult human dental pulp. These DPSCs were then compared with human bone marrow stromal cells (BMSCs), known precursors of osteoblasts. Although they share a similar immunophenotype in vitro, functional studies showed that DPSCs produced only sporadic, but densely calcified nodules, and did not form adipocytes, whereas BMSCs routinely calcified throughout the adherent cell layer with clusters of lipid-laden adipocytes. When DPSCs were transplanted into immunocompromised mice, they generated a dentin-like structure lined with human odontoblast-like cells that surrounded a pulp-like interstitial tissue. In contrast, BMSCs formed lamellar bone containing osteocytes and surface-lining osteoblasts, surrounding a fibrous vascular tissue with active hematopoiesis and adipocytes. This study isolates postnatal human DPSCs that have the ability to form a dentin/pulp-like complex.
4,174 citations
TL;DR: The results indicate that the presence or absence of a microbial flora is the major determinant in the healing of exposed rodent pulps, even in the face of gross food impactions.
2,064 citations
TL;DR: It is demonstrated that DPSCs possess stem-cell-like qualities, including self-renewal capability and multi-lineage differentiation, including single-colony-derived DPSC strains that differ from each other with respect to their rate of odontogenesis.
Abstract: In this study, we characterized the self-renewal capability, multi-lineage differentiation capacity, and clonogenic efficiency of human dental pulp stem cells (DPSCs). DPSCs were capable of forming ectopic dentin and associated pulp tissue in vivo. Stromal-like cells were reestablished in culture from primary DPSC transplants and re-transplanted into immunocompromised mice to generate a dentin-pulp-like tissue, demonstrating their self-renewal capability. DPSCs were also found to be capable of differentiating into adipocytes and neural-like cells. The odontogenic potential of 12 individual single-colony-derived DPSC strains was determined. Two-thirds of the single-colony-derived DPSC strains generated abundant ectopic dentin in vivo, while only a limited amount of dentin was detected in the remaining one-third. These results indicate that single-colony-derived DPSC strains differ from each other with respect to their rate of odontogenesis. Taken together, these results demonstrate that DPSCs possess stem-cell-like qualities, including self-renewal capability and multi-lineage differentiation.
1,931 citations
1,133 citations
TL;DR: The apical papilla is distinctive to the pulp in terms of containing less cellular and vascular components than those in the pulp, and both SCAP and DPSCs were as potent in osteo/dentinogenic differentiation as MSCs from bone marrows, whereas they were weaker in adipogenic potential.
1,067 citations