Why sinistrality study is of so great importance and big distribution nowadays

Abstract

Asymmetry represents important adaptation factor for changeable or non-favorable environ­ mental conditions. Sinistrality belongs to such a phenomenon rate and importance of which got increased during latest years (sinisters amount together with ambidexters is approximately 20%). Interest to sinistrality as a phenomenon grows in many branches of theoretical and practical medicine. Only nowadays there is a real beginning for special devices usage for left-handers in dentistry in part in Turkey and in Belgorod.