Biomaterial Database

Unusual forms of collagen in human dentin. 1996

J Waltimo

Department of pedodontics and Orthodontics, University of Helsinki, Finland.

Unusual fibrillar and segmental forms of collagen have been documented in several tissues, including rodent dentin - but not human dentin, which was analyzed here for the presence of such structures. Of six normal human permanent and deciduous teeth examined, cusps of two deciduous molars displayed atypical formations, designated here symmetrical collagen segments (SCSs). They were detected inside of dentinal tubules. It was evident that the 264-nm long, cross-banded SCSs were occasionally arranged vertically and laterally in a staggered manner into thick, irregularly shaped aggregates. Two deciduous incisors from patients with dentinogenesis imperfecta associated with osteogenesis imperfecta were also studied. SCSs were not observed, but fibrous long-spacing-like collagen was rarely found intratubularly in one tooth.

UI	MeSH Term	Description	Entries
D007180	Incisor	Any of the eight frontal teeth (four maxillary and four mandibular) having a sharp incisal edge for cutting food and a single root, which occurs in man both as a deciduous and a permanent tooth. (Jablonski, Dictionary of Dentistry, 1992, p820)	Incisors
D010013	Osteogenesis Imperfecta	COLLAGEN DISEASES characterized by brittle, osteoporotic, and easily fractured bones. It may also present with blue sclerae, loose joints, and imperfect dentin formation. Most types are autosomal dominant and are associated with mutations in COLLAGEN TYPE I.	Fragilitas Ossium,Lobstein Disease,Brittle Bone Disease,Lobstein's Disease,Osteogenesis Imperfecta Tarda,Osteogenesis Imperfecta with Blue Sclerae,Osteogenesis Imperfecta, Type 1,Osteogenesis Imperfecta, Type I,Disease, Lobstein,Disease, Lobstein's,Lobsteins Disease,Ossiums, Fragilitas,Osteogenesis Imperfecta Tardas
D012016	Reference Values	The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.	Normal Range,Normal Values,Reference Ranges,Normal Ranges,Normal Value,Range, Normal,Range, Reference,Ranges, Normal,Ranges, Reference,Reference Range,Reference Value,Value, Normal,Value, Reference,Values, Normal,Values, Reference
D003094	Collagen	A polypeptide substance comprising about one third of the total protein in mammalian organisms. It is the main constituent of SKIN; CONNECTIVE TISSUE; and the organic substance of bones (BONE AND BONES) and teeth (TOOTH).	Avicon,Avitene,Collagen Felt,Collagen Fleece,Collagenfleece,Collastat,Dermodress,Microfibril Collagen Hemostat,Pangen,Zyderm,alpha-Collagen,Collagen Hemostat, Microfibril,alpha Collagen
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
D003811	Dentinogenesis Imperfecta	An autosomal dominant disorder of tooth development characterized by opalescent dentin resulting in discoloration of the teeth. The dentin develops poorly with low mineral content while the pulp canal is obliterated.	Hereditary Opalescent Dentin,Capdepont Teeth,Dentinogenesis Imperfecta 1,Dentinogenesis Imperfecta without Osteogenesis Imperfecta,Dentinogenesis Imperfecta, Shields Type 2,Dentinogenesis Imperfecta, Shields Type II,Opalescent Dentin,Opalescent Teeth without Osteogenesis Imperfecta,Dentin, Opalescent,Opalescent Dentin, Hereditary,Teeth, Capdepont
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014094	Tooth, Deciduous	The teeth of the first dentition, which are shed and replaced by the permanent teeth.	Primary Tooth,Tooth, Primary,Baby Teeth,Baby Tooth,Dentition, Deciduous,Dentition, Primary,Milk Teeth,Milk Tooth,Primary Teeth,Teeth, Deciduous,Teeth, Primary,Deciduous Dentition,Deciduous Dentitions,Deciduous Teeth,Deciduous Tooth,Dentitions, Deciduous,Dentitions, Primary,Primary Dentition,Primary Dentitions,Teeth, Baby,Teeth, Milk,Tooth, Baby,Tooth, Milk