The aim of this study was to determine the pre- and post-treatment width changes in the canine, premolar and molar regions in subjects treated with extraction of four first premolars, non-extraction, and non-extraction with rapid maxillary expansion (RME). Pre- and post-treatment orthodontic study models of 60 females (13.83 +/- 2.77 years) and 24 males (14.33 +/- 2.67 years) who underwent comp...

Tooth transposition, which is a rare condition, is ascribed to the disturbance of tooth eruption and the subsequent abnormal occlusal relationships. Transpositions mostly involve the upper jaw and more frequently occur between the maxillary canine and first premolar. Herein, we present a case of a maxillary canine‒second molar transposition in a thalassemic patient.

Familiarity with the normal and abnormal anatomy of the root canal system is essential for successful root canal treatment. The possibility of concomitant three-rooted and three- canalled maxillary and mandibular premolars are extremely rare. The purpose of this paper was to report a case with a three-rooted maxillary first premolar and two three-rooted mandibular premolars.

OBJECTIVE To determine the internal root morphology of the maxillary first premolar in Kenyans of African descent. DESIGN In vitro descriptive cross-sectional study. SETTING School of Dental Sciences, University of Nairobi. SUBJECTS One hundred and fifty five extracted maxillary first premolars obtained from patients aged between 13-30 years attending dental clinics within Nairobi. RESU...

Purpose The aim of this study was to compare the root surface areas of the maxillary permanent teeth in Thai patients exhibiting anterior normal overbite and in those exhibiting anterior open bite, using cone-beam computed tomography (CBCT). Materials and Methods CBCT images of maxillary permanent teeth from 15 patients with anterior normal overbite and 18 patients with anterior open bite wer...

BACKGROUND Studies that show frequencies of different orthodontic treatment protocols can be used as valuable parameters in the interpretation of treatment tendency with time. The purpose of this retrospective study was to evaluate all orthodontic treatment planning conducted at the Orthodontic Department at Bauru Dental School, University of São Paulo, Brazil, since 1973, in order to investiga...

Background: This study aimed to evaluate the cone-beam computed tomography (CBCT) technique considering its reliability diagnose resorption due maxillary impacted canine. Methods: In this cross-sectional study, 68 CBCT images were observed by two oral and maxillofacial radiologists. The position of canine was assessed, severity root in adjacent teeth determined rounds viewing. Finally, statisti...

303 T JOB Spring (the acronym is formed from the names of the last three authors of this article) was developed to facilitate correction of partial canine-first premolar transposition in the maxillary arch.1-6 This new device helps move the premolar toward the center of the palate to allow mesial displacement of the canine. The spring is attached to the archwire and can be activated either outs...