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Int Orthod
; 16(3): 470-485, 2018 09.
Article
in English
| MEDLINE
| ID: mdl-30006082
ABSTRACT
The aim of the present study was to comprehensively assess the posttreatment effect of premolar extraction versus non-extraction on the position and development of the lower third molars. The sample consisted of 227 patient's pre- and posttreatment panoramic radiographs (53 with four premolar extractions, 174 without extractions). The position and developmental stage of the lower third molars were evaluated by using Pell-Gregory's, Winter's, modified Miloro-DaBell's and Demirjian's classifications, respectively. Premolar extraction had a considerably positive influence on the position and development of the lower third molars and therefore could provide better prognosis for their eruption.
Subject(s)
Bicuspid/surgery , Molar, Third , Tooth Extraction , Adolescent , Child , Female , Humans , Male , Molar, Third/growth & development , Radiography, Panoramic
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