منابع مشابه
Anterior Dental Cutting in the Laetolil Hominids and the Evolution of the Bicuspid P3
The younger Laetolil hominids provide evidence of a unique anterior cutting complex with a chisel-like action occurring between the lingual-distal C face and a transverse ridge on the P, perpendicular to it, extending between the subequal cusps. An earlier adaptation to more efficient grinding may have resulted in reduced canine projection and the development of the lingual P3 cusp, raising the...
متن کاملDental abrasion as a cutting process.
A mammalian tooth is abraded when a sliding contact between a particle and the tooth surface leads to an immediate loss of tooth tissue. Over time, these contacts can lead to wear serious enough to impair the oral processing of food. Both anatomical and physiological mechanisms have evolved in mammals to try to prevent wear, indicating its evolutionary importance, but it is still an established...
متن کاملNew fossil hominids from Laetolil, Tanzania.
New fossil hominid specimens from the Laetolili fossil locality in Tanzania are described. The material includes mandibles and teeth derived from reliably-dated deposits of Pliocene age. Preliminary descriptions, measurements and illustrations are presented.
متن کاملInterdisciplinary management of anterior dental esthetics.
BACKGROUND Dental esthetics has become a popular topic among all disciplines in dentistry. When a makeover is planned for the esthetic appearance of a patient's teeth, the clinician must have a logical diagnostic approach that results in the appropriate treatment plan. With some patients, the restorative dentist cannot accomplish the correction alone but may require the assistance of other dent...
متن کاملThe treatment of anterior dental trauma.
BACKGROUND Avulsed frontal teeth often cannot be saved because of improper or lack of initial treatment. The result is a need for multiple interventions over the patient's lifetime, which also carry a high financial cost. METHODS We explored the subject of lost anterior teeth in young patients with a PubMed search based on the term "prevalence of traumatic dental injuries" over the time perio...
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ژورنال
عنوان ژورنال: American Journal of Physical Anthropology
سال: 1981
ISSN: 0002-9483,1096-8644
DOI: 10.1002/ajpa.1330550210