نتایج جستجو برای: characterization of human teeth
تعداد نتایج: 21323624 فیلتر نتایج به سال:
ABSTRACT By restoration of pulpally exposed teeth with root canal therapy edentulous areas and neighbouring teeth displacement can be avoided. Prefabricated posts may be used for crown restoration of these teeth. For the preparation of root canal for post placement, Gutta percha should be removed by means of mechanical, thermal and chemical agents. To study the amount of apical leakage in vit...
Background and Aim: Extracted teeth used in preclinic should be disinfected. The aim of this study was to evaluate the effects of some disinfectants on microorganisms cultured from pulp chamber of extracted teeth.Materials and Methods: In this experimental study 54 intact human teeth were collected. After access cavity preparation, 10 8 B. streothermophillus endospors were inoculated into pulp ...
Statement of Problem: Because dental amalgam does not adhere to tooth structure, using adhesive cements in amalgam-bonded restorations have been increased. Purpose: The goal of this in-vitro study was to compare the effects of three types of glass ionomer as adhesive liners as well as varnish liner in increasing fracture resistance of teeth restored with amalgam. Materials and Methods: Seventy ...
stem cells from human exfoliated deciduous teeth (shed) have been introduced recently and possess characteristics similar to mesenchymal stem cells (mscs). because of their convenient accessibility and safety of harvest, shed can be a preferable source for the ever- increasing mscs’ applications. while they are new, their immunoproperties have not been adequately studied. in this study, we ...
Background and Aim: Lead and cadmium are as main environment pollutants, and even in low concentrations have harmful effects on human health. Baby teeth are efficient indicators of environmental exposure of children to heavy metals. The aim of the present study is to determine the concentration of lead and cadmium in deciduous teeth of 5-12 year old girls and boys in Birjand in 2010. Materials ...
Introduction: 238U decays with alpha particles emission into 234Th and the series ends with 206Pb. The unstable nucleus loses the energy with emitting ionizing alpha particles for reaching a stable state. It is undergoing alpha decay with decay energy (4.679 MeV). Alpha particles enter the human and animal bodies through inhalation of air or ingestion of contaminated food and water. This study ...
Characterization is a process in which the character or collective qualities of person are introduced complete denture either by modification teeth bases ,to make it more natural for that , characterization necessary to give leaf like appearance appear this case report reviews various principles an effort produce appearing denture.
UNLABELLED The need for new dental tissue-replacement therapies is evident in recent reports which reveal startling statistics regarding the high incidence of tooth decay and tooth loss. Recent advances in the identification and characterization of dental stem cells, and in dental tissue-engineering strategies, suggest that bioengineering approaches may successfully be used to regenerate dental...
Introduction: Determining working length is regarded as an important step in root canal treatment, for which electronic apex locator can be applied. New apex locators are preferred, since they work via applying alternating current. Furthermore, the two factors of dentin specific resistance and capacitance seem to be effective principles in their operating. Therefore, this study aimed to determi...
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