analysis of force between attractive magnets used in orthodontics

To compare the results of hard and soft attractive magnet combinations to the gold standard Neodymium Iron Boron Magnets used for extrusion of impacted maxillary canines. Experimental and comparative study. Eastman Dental Institute and Hospital, London, UK in collaboration with Department of Physics and Astronomy University College of London [UCL] during 1996-1998. In vitro experiments with combinations of hard and soft magnets of different morphologies. Load Cell Transducer was used to record the force levels in grams with magnets placed in different vertical, horizontal and angular offsets. Three-dimensional mesh plots were created to visualize force level decay with increasing distance. The results were compared with previous study on hard magnet combinations only and observed for "edge effect". The present study force levels were very low albeit the edge effect was negligible. Although the edge effect phenomenon present with powerful hard magnets was minimal or nearly absent with the hard and soft magnet combination - the overall force levels were too low to be of any use in clinical scenario for extrusion of deep impacted canines

Adjunctive orthodontics

A fair percentage of Orthodontic cases will need assistance and cooperation from other disciplines of dentistry. Adjunctive Orthodontics provides the patient ultimate care from the profession. A case report of hypodontia is documented with final Maryland bridges inserted to help restore function and aesthetics

Atypical extractions for efficient and effective orhtodontic treatment

This paper aims at presenting a complex case with an unusual extraction pattern, where the conventional approach would have led to prolonged treatment time. As long as principles of good functional occlusion and aesthetics are adhered to, lateral thinking in Orthodontic treatment planning should be encouraged

Possible causes and solutions to late lower labial segment crowding

The aim of this essay is to look specifically into possible factors leading to lower incisor crowding following successful orthodontic treatment-Physiologic Recovery. A comprehensive review looking at both historical and up to date studies on this much contentious issue. The second part of the essay is related to the options available to the orthodontists to deal with such recovery