Author/Authors :
Naseri، Navid نويسنده Orthodontic Department, School of Dentistry, Islamic Azad
University, Shiraz, IR Iran , , Baghaeian، Pedram نويسنده Orthodontic Department, Tehran University of Medical
Sciences, Tehran, IR Iran , , Javaherimahd، Maryam نويسنده Orthodontic Department, Tehran University of Medical
Sciences, Tehran, IR Iran , , Gorjizadeh، Fatemeh نويسنده Orthodontic Department, Tehran University of Medical Sciences, Tehran, IR Iran ,
Abstract :
Background It has been proved that, thereʹs craniofacial
asymmetry but much of this skeletal asymmetries are clinically
ignorable. This asymmetry may exist in teeth size arranged in right and
left sides of human mouth too. Orthodontists should pay attention to
bilateral tooth asymmetry in treatment planning stage. Objectives This
study was conducted to demonstrate whether the difference between size
of left and right side teeth is actual. Materials and Methods A total of
200 plaster dental molds were used which were collected from a private
practice in Tehran. A caliper with accuracy of 0.01 mm was used for
measuring teeth and most teeth were measured twice and the average value
was considered as the teeth size. In all cases, the Vernier calipers
jaws were moved along the teeth longitudinal axis and the biggest width
was measured in the contact point area. Results In average 83.16% of
left and right teeth in upper jaw and 83.66% of left and right teeth in
the lower jaw were not symmetrical and teeth in the upper and lower jaws
were completely similar 16.84% and 16.34%, respectively. Conclusions The
result of the study showed that nearly 83% of teeth in maxilla and
mandible are asymmetric in mesiodistal width. Mandibular second molar
and canine showed the highest and lowest bilateral asymmetry
respectively.
