JunB as a potential mediator of PTHrP actions: new gene targets Ephrin B1 and VCAM-1. (65/170)

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Regeneration of bone and periodontal ligament induced by recombinant amelogenin after periodontitis. (66/170)

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Regulation of Nur77 gene expression by prostanoids in cementoblastic cells. (67/170)

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Histological changes in human dental pulp following application of intrusive and extrusive orthodontic forces. (68/170)

The aim of this study was to compare the effects of orthodontic extrusive and intrusive forces on histological changes of the human dental pulp. In this clinical trial, 52 sound upper first premolars from 26 patients scheduled for extraction for orthodontic reasons were selected. They were divided into 2 groups, based on the time intervals for histological evaluation (3 days and 3 weeks). In each group, 10 teeth received orthodontic extrusive forces, 10 teeth underwent intrusive forces, and 6 teeth served as controls. After each period, teeth were extracted and prepared for histological examination under light microscopy and some histological parameters were evaluated. The data were statistically analyzed by Kruskall-Wallis and Mann Whitney tests. Of the parameters evaluated, just vacuolization and disruption of the odontoblastic layer showed statistically significant differences between the control group and both of the experimental groups in each test period (P < 0.05). Additionally, there was no significant difference between 3-day and 3-week intervals in each experimental group, except for fibrosis in the extrusive group which significantly increased after 3 weeks of force application (P = 0.001). Histological pulp changes following extrusive and intrusive force applications for 3 days and 3 weeks show no difference from each other.  (+info)

Peripheral ossifying fibroma: a case report. (69/170)

A case of peripheral ossifying fibroma (POF) in the mandibular gingiva of a 30-year-old man is described. The lesion was asymptomatic, firm, pinkish red and pedunculated histologically showing cellular, fibrous connective tissue stroma with calcified osseous and cementum-like calcifications. Lesions histologically similar to peripheral ossifying fibroma (POF) have been given various names in the existing literature. Therefore, the controversial varied nomenclature and possible etiopathogenesis of peripheral ossifying fibroma are discussed.  (+info)

Structure, chemical composition and mechanical properties of coronal cementum in human deciduous molars. (70/170)

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Dynamics of orthodontic root resorption and repair in human premolars: a light microscopy study. (71/170)

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Beta-tricalcium phosphate and basic fibroblast growth factor combination enhances periodontal regeneration in intrabony defects in dogs. (72/170)

The combined effect of beta-tricalcium phosphate and basic fibroblast growth factor was observed in the regeneration of periodontal tissue in dogs. For this purpose, either beta-TCP and FGF-2 (beta-TCP/FGF-2 group) or FGF-2 alone (FGF-2 group) was applied in intrabony defects. The control group received beta-TCP alone. The tissues were histologically examined at 2, 4, or 8 weeks following treatment. The control group was characterized by incomplete, newly formed bone around beta-TCP particles. The beta-TCP/FGF-2 group showed a statistically significant increase in both new bone and cementum formation compared to the FGF-2-alone group (76.3% vs. 65.3%, p < 0.01; 81.0% vs. 68.3%, p < 0.01, respectively). These findings suggested that beta-TCP may be a suitable scaffold for FGF-2 and that the combination of beta-TCP and FGF-2 can enhance bone and cementum formation.  (+info)