Dentine is a term used to describe the hard, bonelike tissue that makes up teeth. The spelling of this word can be a bit confusing, as it is sometimes spelled with a "t" and sometimes with a "d". The correct spelling is actually with a "d", and is pronounced /ˈdɛnˌtɪn/. The "e" in the first syllable is pronounced like the "e" in "pet", while the "i" in the second syllable is pronounced like the "i" in "bit". The "t" sound at the end of the word is actually pronounced as a "d" sound.
Dentine, also spelled dentin, is a hard, calcified tissue that forms the bulk of a tooth, surrounding the pulp cavity and root canals. It is typically found beneath the enamel layer on the crown and beneath the cementum layer on the root of a tooth. Dentine is responsible for giving the tooth its strength and support.
Composed mostly of mineralized connective tissue, dentine consists of a dense matrix of collagen fibers embedded with hydroxyapatite crystals, which provide its hardness and durability. It is light yellow in color and is usually softer than enamel but harder than cementum.
Dentine plays a crucial role in dental function and protection. Its purpose is to support and protect the pulp of the tooth, which contains nerves and blood vessels. It acts as a shock absorber, reducing the risk of damage to the delicate internal structures of the tooth from biting and chewing forces.
When dentine is exposed due to enamel erosion or gum recession, it can cause dental sensitivity or pain as it contains microscopic tubules that connect to the pulp. Dentinal hypersensitivity may occur when the tubules become exposed to external stimuli such as hot, cold, sweet, or acidic substances.
Dentine can also be affected by dental diseases such as dental caries (tooth decay) and dentinogenesis imperfecta (a genetic disorder that affects the formation of dentine), contributing to the overall health and condition of the tooth.
The substance proper of a tooth, substantia eburnea.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
* The statistics data for these misspellings percentages are collected from over 15,411,110 spell check sessions on www.spellchecker.net from Jan 2010 - Jun 2012.
The word dentine is derived from the Latin word dens, meaning tooth. It is combined with the suffix -ine, which is commonly used in scientific terminology to indicate a substance derived from or related to the root word. Therefore, dentine literally means substance of the tooth or relating to the tooth.