Biomaterial Database

[Changes in the dental arch due to obligatory early extraction of first permanent molars]. 1989

A E Telli, and S Aytan

The first permanent molars are the mo frequently extracted teeth due to caries. Early loss of these teeth which are known as "the ke of the occlusion" may lead to rotations, migrations, and elongations of the other teeth in the dental arches, and finally may cause occlusal disorders. This research is conducted on the patient whose first permanent molars need to be extracted due to profound caries and unrestorab material loss. By means of the lateral and panoramic radiographs taken just before the extraction and one year later, the local changes in the extraction and non-extraction segments are compared.

UI	MeSH Term	Description	Entries
D008310	Malocclusion	Such malposition and contact of the maxillary and mandibular teeth as to interfere with the highest efficiency during the excursive movements of the jaw that are essential for mastication. (Jablonski, Illustrated Dictionary of Dentistry, 1982)	Angle's Classification,Crossbite,Tooth Crowding,Cross Bite,Angle Classification,Angles Classification,Bite, Cross,Bites, Cross,Classification, Angle's,Cross Bites,Crossbites,Crowding, Tooth,Crowdings, Tooth,Malocclusions
D008963	Molar	The most posterior teeth on either side of the jaw, totaling eight in the deciduous dentition (2 on each side, upper and lower), and usually 12 in the permanent dentition (three on each side, upper and lower). They are grinding teeth, having large crowns and broad chewing surfaces. (Jablonski, Dictionary of Dentistry, 1992, p821)	Molars
D003724	Dental Arch	The curve formed by the row of TEETH in their normal position in the JAW. The inferior dental arch is formed by the mandibular teeth, and the superior dental arch by the maxillary teeth.	Arch, Dental,Arches, Dental,Dental Arches
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014081	Tooth Extraction	The surgical removal of a tooth. (Dorland, 28th ed)	Extraction, Tooth,Extractions, Tooth,Tooth Extractions
D014085	Tooth Migration	The movement of teeth into altered positions in relationship to the basal bone of the ALVEOLAR PROCESS and to adjoining and opposing teeth as a result of loss of approximating or opposing teeth, occlusal interferences, habits, inflammatory and dystrophic disease of the attaching and supporting structures of the teeth. (From Boucher's Clinical Dental Terminology, 4th ed)	Tooth Drift,Tooth Drifting,Migration, Tooth
D016388	Tooth Loss	The failure to retain teeth as a result of disease or injury.	Loss, Tooth