Biomaterial Database

[The effect of fluorine and other biogeochemical factors on enamel and dentin microhardness]. 1990

Ch A Pashaev, and R M Akhmedov, and Ch M Khalifa-zade

Dental enamel and dentin microhardness were studied in subjects aged 35-44 living in various climatic and geographic zones of Azerbaijan. A total of 172 intact teeth were examined. Dental hard tissue microhardness was found to be related to caries intensity, fluorine content in potable water, and to other biogeochemical factors. Enamel and dentin microhardness were found much higher in the areas with high fluorine levels of potable water than in those with fluorine-deficient water.

UI	MeSH Term	Description	Entries
D002980	Climate	The longterm manifestations of WEATHER. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)	Climates
D003733	Dental Caries Susceptibility	The predisposition to tooth decay (DENTAL CARIES).	Dental Caries Resistance,Caries Resistance, Dental,Caries Susceptibility, Dental,Resistance, Dental Caries,Susceptibility, Dental Caries
D003743	Dental Enamel	A hard thin translucent layer of calcified substance which envelops and protects the dentin of the crown of the tooth. It is the hardest substance in the body and is almost entirely composed of calcium salts. Under the microscope, it is composed of thin rods (enamel prisms) held together by cementing substance, and surrounded by an enamel sheath. (From Jablonski, Dictionary of Dentistry, 1992, p286)	Enamel,Enamel Cuticle,Dental Enamels,Enamel, Dental,Enamels, Dental,Cuticle, Enamel,Cuticles, Enamel,Enamel Cuticles,Enamels
D003804	Dentin	The hard portion of the tooth surrounding the pulp, covered by enamel on the crown and cementum on the root, which is harder and denser than bone but softer than enamel, and is thus readily abraded when left unprotected. (From Jablonski, Dictionary of Dentistry, 1992)	Dentine,Dentines,Dentins
D005461	Fluorine	A nonmetallic, diatomic gas that is a trace element and member of the halogen family. It is used in dentistry as fluoride (FLUORIDES) to prevent dental caries.	Fluorine-19,Fluorine 19
D005843	Geography	The science dealing with the earth and its life, especially the description of land, sea, and air and the distribution of plant and animal life, including humanity and human industries with reference to the mutual relations of these elements. (From Webster, 3d ed)	Factor, Geographic,Factors, Geographic,Geographic Factor,Geographic Factors,Geography, Human,Human Geography
D006244	Hardness	The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.	Hardnesses
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D001382	Azerbaijan	A country located in Southwestern Asia, bordering the Caspian Sea, between Iran and Russia, with a small European portion north of the Caucasus range. The capital is Baku.	Azerbaijan S.S.R.,Azerbaijan SSR