The study investigates the gender predictability of permanent maxillary first molar teeth. Mesio distal width of 30 permanent maxillary first molar teeth from casts of 15 male and 15 female patients between the age group of 1725 were measured. Results showed that permanent maxillary first molar tooth exhibited sexual dimorphism but accuracy of gender predictability was only moderate.

•Orthodontists are treating more adult patients who have extracted and decayed first molars.•Molar uprighting after old molar extractions vs orthodontic space closure.•Strategic of compromised molars instead sound premolars.•Management impacted ankylosed molars.•Early extraction permanent with enamel hypoplasia in young children. The has been reported to be the most caries prone tooth dentition...

Teaching the Slow-Learner in the Special School. Edited by M. F. Cleugh. Methuen. 30s. Dr. Cleugh is in charge of the special one-year course for teachers of E.S.N, children at the University of London, Institute of Education. All the contributors to the symposium are her former students. Many aspects of school work and life are covered and the chapters are full of direct help to teachers and s...

The goal was to determine whether rats time filled and empty intervals of equal duration differently. Each of five rats was trained for 50 sessions on an instrumental appetitive head entry procedure in which food was available (primed) every 120 s. On "empty" cycles, 30s prior to the next food prime, a 0.5-s pulse of white noise was presented. On "filled" cycles, 30s prior to the next food prim...

A successive asymmetric colour-matching task was used to study the changes in colour appearance of simulated Munsell samples. Colour shifts were induced with two Planckian illuminants, standard illuminant A (u'=0.256, v'=0.524) and illuminant S (u'=0.174, v'=0.392). Measurements were conducted with a 20 degrees field and a 120 degrees field. Adaptation period varied from 1 to 30s with the small...

The 30-s all-out Wingate test has been used in athletes of all sport specialties to measure the capacity for short duration, high power output while cycling. The aim of this study was to establish differences in measuring anaerobic capacity between the classic Wingate test on a cycling ergometer and the modified Wingate test on a rowing ergometer in rowers. A group of20 rowers was tested by bot...