نتایج جستجو برای: human tooth
تعداد نتایج: 1718221 فیلتر نتایج به سال:
Life history variables (LHV) in primates are closely correlated with the ages of tooth eruption, which are a useful proxy to predict growth and development in extant and extinct species. However, it is not known how tooth eruption ages interact with LHV in polymorphic species such as modern humans. African pygmies are at the one extreme in the range of human size variation. LHV in the Baka pygm...
Undoubtedly, Tooth decay is still one of the most significant problems in human communities. Tooth decay is defined as a microbial disease that causes demineralization of hard tissues and degradation of organic components of teeth. Although there are various theories on etiology of dental caries, Miller’s acidogenic theory (1890) and Gottileb’s proteolitic theory (1933) have gained the most cre...
undoubtedly, tooth decay is still one of the most significant problems in human communities. tooth decay is defined as a microbial disease that causes demineralization of hard tissues and degradation of organic components of teeth. although there are various theories on etiology of dental caries, miller’s acidogenic theory (1890) and gottileb’s proteolitic theory (1933) have gained the most cre...
The important role of genetics has been increasingly recognized in recent years with respect to the understanding of dental anomalies, such as tooth agenesis. The lack of any real insight into the cause of this condition has led us to use a human molecular genetics approach to identify the genes perturbing normal dental development. We are reporting a strategy that can be applied to investigate...
Computer-aided tooth shade determination of the natural tooth is an emerging application area which is still in development. Selecting the correct porcelain type is the key to repair teeth successfully. But the color and shade determined by human observers could not achieve a satisfied result because of the effect of the surrounding light and the limit of human eyes. And the computer-aided toot...
3 Introduction noticed in whale's tooth by Ploquet in 1794. Salter first described this anatomical anomaly Dens invaginatus is a dental anomaly as “a tooth within tooth” in 1855, and was the which results from invagination of enamel first person who described dens invaginatus in organ into dental papilla, beginning at the 3 ,4 human tooth in 1856. Clinically, a crown and sometimes extending int...
Dental implant prosthetics are extensively used as replacement for missing teeth in patients. However, interproximal contact loss between the and tooth has been reported by several studies. Because implants osseointegrated remain immobile within bone, wear of adjacent may impair tooth. Contact gauges commonly examination interdental separation natural dentition; however, effectiveness such fuze...
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