Abstract Usually, when solving the magnetic field distribution of a finite-length straight wire in conducting medium, numerical calculation is required. However, this method has some disadvantages, such as complex calculations and not being conducive to engineering implementation. To solve problem, paper studied attenuation for underwater low-frequency then obtained analytical formula spatial d...

OBJECTIVE The aim of the present study was to verify the torque precision of metallic brackets with MBT prescription using the canine brackets as the representative sample of six commercial brands. MATERIAL AND METHODS Twenty maxillary and 20 mandibular canine brackets of one of the following commercial brands were selected: 3M Unitek, Abzil, American Orthodontics, TP Orthodontics, Morelli an...

We investigate how a straight skeleton can be used to approximate a motorcycle graph. We explain how to construct a planar straight-line graph G such that the straight skeleton of G reveals the motorcycle graph of M , for every given finite set M of motorcycles. An application of our construction is a proof of the Pcompleteness of the construction problem of straight skeletons of planar straigh...

Minor orthodontic treatment using a thin wire with high elasticity can shorten the period and reduce load on anchorage by application of light force. Since it be applied immediately without dental laboratory procedure does not require patient's cooperation, clinically useful. The cases reported here have led to positive results in short periods treatment, only segmented straight 0.012 inch NiTi...