Color of human teeth and enamel solution rate.
نویسندگان
چکیده
منابع مشابه
Enamel prism orientation within human teeth
Dental enamel is the most highly mineralised and hardest biological tissue in human body [16]. It is made of hydroxylapatite (HAP) Ca5(PO4)3(OH), which is hexagonal (6/m). The lattice parameters are a = b = 9.418 Å and c = 6.875 Å. About the inner structure of dental enamel it’s known, that it is composed of elongated “enamel prisms” of about 20μm diameter [1]. The crystallographic structure, r...
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The dentin-enamel junction (DEJ), which is the interfacial region between the dentin and outer enamel coating in teeth, is known for its unique biomechanical properties that provide a crack-arrest barrier for flaws formed in the brittle enamel1. In this work, we re-examine how cracks propagate in the proximity of the DEJ, and specifically quantify, using interfacial fracture mechanics, the frac...
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Equations have been derived and computations carried out for the demineralization rates of tooth enamel employing the “Fluorapatite” model. The model assumes that when hydroxyapatite is exposed to a low fluoride concentration, a layer of fluorapatite is formed around the apatite crystal and this fluorapatite is assumed to be the thermodynamic governing phase during dissolution. The demineralixa...
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بسیاری از پدیده ها در جهان ما اساساً غیرخطی هستند، و توسط معادلات غیرخطی بیان شده اند. از آنجا که ظهور کامپیوترهای رقمی با عملکرد بالا، حل مسایل خطی را آسان تر می کند. با این حال، به طور کلی به دست آوردن جوابهای دقیق از مسایل غیرخطی دشوار است. روش عددی، به طور کلی محاسبه پیچیده مسایل غیرخطی را اداره می کند. با این حال، دادن نقاط به یک منحنی و به دست آوردن منحنی کامل که اغلب پرهزینه و ...
15 صفحه اولIncremental enamel development in modern human deciduous anterior teeth.
This study reconstructs incremental enamel development for a sample of modern human deciduous mandibular (n = 42) and maxillary (n = 42) anterior (incisors and canines) teeth. Results are compared between anterior teeth, and with previous research for deciduous molars (Mahoney: Am J Phys Anthropol 144 (2011) 204-214) to identify developmental differences along the tooth row. Two hypotheses are ...
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ژورنال
عنوان ژورنال: Japanese Journal of Oral Biology
سال: 1984
ISSN: 0385-0137
DOI: 10.2330/joralbiosci1965.26.262