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The purpose of this study was to evaluate the effects of bilateral upper premolar extraction on mandibular growth. Twenty-six subjects (eight males, 18 females) in maximum pubertal growth with an Angle Class II molar relationship, normal to mild overjet increase, mild or no lower arch length discrepancy but severe upper arch discrepancy and no severe skeletal discrepancy were divided into two groups equal in number and gender, as extraction and control groups. The median chronological age was 11.2 years in the extraction group and 12.6 years in the controls. The subjects were observed for a median period of 1.1 years in the extraction group after bilateral extraction of the upper premolars and 1.2 years in the controls until termination of pubertal growth (DP3u) without any orthodontic treatment. Twenty-nine linear and angular measurements were made on 52 lateral cephalograms and hand-wrist radiographs taken before and after the study period. The increase in SNB measured on the total superimposition was significantly greater in the controls than in the extraction group (P < 0.05). In addition, anterior mandibular (counter-clockwise) rotation was only significant (P < 0.05) in the control group. Thus, it might be suggested that bilateral upper premolar extractions might affect the mandibular rotation tendency.

Introduction: To have a child with a disability, whatever the disability is, brings many challenges. In this study, in the light of the related legislation for the determination of the rate of disability, it was aimed to create awareness for the causes of childhood disability and about the problems faced in reporting. Materials and Methods: Reports of subjects under the age of 18 prepared by The Disability Health Board of Ege University between January 1, 2011 and June 30, 2013 regarding age, gender, type and causes of application (personal-formal), disability, disability cause and rates, the reported date and the validity periods of the reports were evaluated retrospectively. The obtained data were analyzed with statistical software.

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