To the question on asymmetry and gender study actuality in dentistry

Abstract

Asymmetry decrease or abundancy defines dysadaptation and pathology, it has gender peculiarities being less in females. Left-handedness represents asymmetry population-species level. Asymmetry is a feature of maxillary facial area as a whole and oral cavity particularly. Parotid saliva from right gland had more expressed procoagulant features in children and adolescents but in elder ages it was so from left gland. There is a relationship between handedness and asymmetry of the occlusal morphology of fust permanent molars. Tooth decay injures mainly left canines in left-handers, right canines in right-handers. There is a tendency of left handers and ambidexters increase in the world while reaching 15-20% in some countries, 95-98% in the USA and Japan though the left-handers amount is 5% in Arabic countries because it is forbidden to eat with the left hand. There is a big problem for left-handers to work with the devices for right-handers. It is known about creating and introducing in practice the dental devices and tools for left-handed dentists in Turkey, Belgorod (Russia).