Biomaterial Database

[Measurement of thermal expansion coefficient of human teeth]. 1990

H C Xu

School of Stomatology, Beijing Medical University.

The coefficient of thermal expansion of specimens from 60 freshly extracted sound human teeth was measured by a dilatometer over the range 10-80 degrees C. The coefficient increased rapidly above 50 degrees C, but there was no significant variation with the tooth age between 10 and 70 years. At 10-50 degrees C, the coefficient of thermal expansion was almost constant. The human teeth are usually at this temperature range in oral cavity. The authors suggest that the average values obtained can be used as quotable values.

UI	MeSH Term	Description	Entries
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
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013816	Thermodynamics	A rigorously mathematical analysis of energy relationships (heat, work, temperature, and equilibrium). It describes systems whose states are determined by thermal parameters, such as temperature, in addition to mechanical and electromagnetic parameters. (From Hawley's Condensed Chemical Dictionary, 12th ed)	Thermodynamic
D014070	Tooth	One of a set of bone-like structures in the mouth used for biting and chewing.	Teeth