نتایج جستجو برای: characterization of human teeth
تعداد نتایج: 21323624 فیلتر نتایج به سال:
INTRODUCTION Human dental pulp stem/stromal cells (hDPSCs) in adults are primarily derived from the pulp tissues of permanent third molar teeth in existing literatures, whereas no reports exist, to our knowledge, on deriving hDPSCs from a tooth without the need for surgical procedure. The aim of this study was to raise a novel idea to source hDPSCs from complicated crown-fractured teeth requiri...
some new water-soluble schiff base complexes of na2[m(5-so3-1,2-salophen)].nh2o; (5-so3-1,2-salophen = n,n’-bis(5-sulphosalicyliden)-1,2-phenylendiamine); na2[m(5-so3-2,3-salpyr)(h2o)n].2h2o; (5-so3-2,3-salpyr = n,n’-bis(5-sulphosalicyliden)-2,3-diaminopyridine); and na2[m(5-so3-3,4-salbenz)(h2o)n].nh2o; (5-so3-3,4-salbenz = n,n’-bis(5-sulphosalicyliden)-3,4-diaminobenzophenon); where m = cu, n...
Background and purpose: Lead is a heavy metal, which has been replaced by calcium hydroxyapatite in tooth enamel. It is considered as an index of pollution assessment. Zanjan province is potential area for lead element accumulation. This study aimed at comparing the amount of lead in human deciduous and permanent teeth in order to evaluate and determine the risk of lead pollution in urban and r...
J. O. Turner was the first who described the developmental defect of permanent tooth caused by periapical inflammation of temporary predecessor. This disorder is most common in the upper front teeth and premolars. These disorders are collectively called developmental defects of enamel (DDE). They are visible deviations from the normal translucent enamel resulting from enamel organ dysfunction. ...
Adequate knowledge and accurate characterization of root canal anatomy is an essential prerequisite for successful treatment endodontic surgery. Over the years, ever-increasing body related to human dentition has accumulated. To correct deficiencies in existing systems, a new coding system classifying morphology, accessory canals anomalies been introduced. In recent micro-computed tomography (m...
Stem cells from human exfoliated deciduous teeth (SHED) are highly proliferative pluripotent cells that can be retrieved from primary teeth. Although SHED are isolated from the dental pulp, their differentiation potential is not limited to odontoblasts only. In fact, SHED can differentiate into several cell types including neurons, osteoblasts, adipocytes, and endothelial cells. The high plasti...
THE dental literature contains numerous articles concerning the chemical analysis of human teeth.1-9 Most of this work was done in the early 1930's. Naturally, in these analyses the common chemical methods and procedures known at the time were used. Recently, a request was received for an analysis of some Greek teeth to compare their chemical compositions with that of domestic teeth. In recent ...
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