Effect of myoelectric signal processing on the relationship between muscle force and processed EMG
Published in American Journal of Orthodontics
Initial displacements and variations of eight human child skulls owing to high-pull headgear traction determined with la...
Published in American Journal of Orthodontics
In this study eight macerated, human child skulls (dental age approximately 9.5 years) were subjected to a standardized high-pull headgear traction system. Tensile forces from 0.5 to 3.5 N (1 N = 0.1 kgf) per side were produced to the maxillae. Displacements of skeletal components were determined at 22 indicator points per skull by means of laser h...
More on the quadrilateral analysis
Published in American Journal of Orthodontics
Bonding to porcelain and gold
Published in American Journal of Orthodontics
To test the effectiveness of bonding orthodontic attachments to porcelain, edgewise brackets were bonded to 160 lower incisor, porcelain denture teeth by means of two different resin systems and three different porcelain bonding agents. Bonding to porcelain was found to be not only effective, but the use of a porcelain primer before bonding resulte...
Shear strength of brackets bonded to anterior and posterior teeth
Published in American Journal of Orthodontics
A study was undertaken to determine the maximum shear strength of brackets bonded to anterior and posterior teeth. Brackets were bonded to two groups comprising 12 incisor and 12 molar teeth. After storage in water at 37° C for 10 days, each bracket was tested to failure in a shear mode in a Instron machine. The mean value for the incisors was 164....
Issues and reviews in teratology (Vol. 2)
Published in American Journal of Orthodontics
In memoriam Lindsey Taylor (1927–1985)
Published in American Journal of Orthodontics
Light-wire treatment of a class II, Division 1 subdivision malocclusion An American Board of Orthodontics case report
Published in American Journal of Orthodontics
A case report of a Class II, Division 1 subdivision malocclusion with a deep overbite and a marked overjet is presented. The patient was a 14-year-old boy with the potential for continued growth. The lip positions imposed by the teeth and the facial skeleton increased the labioversion of the maxillary incisors. A Begg light-wire appliance was used ...
Statistical evaluation of torque angles in reference to straight-wire appliance (SWA) theories
Published in American Journal of Orthodontics
Inconsistency in torque data on diverse straight-wire appliance (SWA) attachments calls for reassessment of the SWA theories. This study evaluates the SWA theories and suggests predictive torque models. A custom-made torque angle gauge was used on models from 54 ideal occlusion subjects (34 orthodontically treated and 20 untreated cases). This stud...
Growth of the mandible
Published in American Journal of Orthodontics
