Biomaterial Database

[Variations of cemento-enamel junction of human teeth. Literature review]. 1991

U Lehmann, and S Schmeisser

Zentrums für Zahn-, Mund- und Kieferheilkunde (Charité) der Humboldt-Universität zu Berlin.

The paper gives an account of the variations of the cemento-enamel borderline. Till now, the most studies were conducted on ground sections. Only a few descriptions of the relationship between enamel and cementum along the circumferential junction can be find. The authors described 5 variations which were discussed: cementum meets enamel, cementum fails to meet enamel, cementum overlaps enamel, enamel overlaps cementum, undertermined type. These observations show the unpredictable variability of enamel-cementum junction. It should be noted that the relationship is not constant along the circumferential crown root demarcation line.

UI	MeSH Term	Description	Entries
D003739	Dental Cementum	The bonelike rigid connective tissue covering the root of a tooth from the cementoenamel junction to the apex and lining the apex of the root canal, also assisting in tooth support by serving as attachment structures for the periodontal ligament. (Jablonski, Dictionary of Dentistry, 1992)	Cementoblasts,Cementum,Cementoblast,Cementum, Dental
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
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014070	Tooth	One of a set of bone-like structures in the mouth used for biting and chewing.	Teeth
D014092	Tooth Root	The part of a tooth from the neck to the apex, embedded in the alveolar process and covered with cementum. A root may be single or divided into several branches, usually identified by their relative position, e.g., lingual root or buccal root. Single-rooted teeth include mandibular first and second premolars and the maxillary second premolar teeth. The maxillary first premolar has two roots in most cases. Maxillary molars have three roots. (Jablonski, Dictionary of Dentistry, 1992, p690)	Root, Tooth,Roots, Tooth,Tooth Roots