In orthopedic and trauma surgery, metallic plates are used for reduction and fixation of bone fractures. In clinical practice, the intra-operative planning for screw fixation is usually based on fluoroscopic images. Screw fixation is then performed on a free-hand basis. As such, multiple attempts may be required in order to achieve an optimal positioning of the fixing screws. To help the physic...

During the micro-drilling process of stainless steel, the wear, fracture, and breakage of the micro-drill easily occur. Micro-drill geometry parameters have significant influence on the drilling performance of the micro-drill. Nowadays, the helical point micro-drill is proposed and its improved drilling performance is validated by some researchers. In this study, to analyze the effect of geomet...

We thank Ahlbom et al., the authors of [1] for their interest in our paper [2]. Since this is an important issue, the letter deserves a comprehensive and thorough response. Some authors use brain tumor incidence data from Sweden to dismiss evidence of an increased risk for brain tumors associated with the use of mobile and cordless (wireless) phones as published in peer-reviewed scientific lite...

A 13-bit, 1.4-MS/s, sixth-order cascaded sigma–delta modulator oversampling at 16 X is implemented in a 0.72 m complementary metal–oxide–semiconductor process for use in the baseband path of a radio-frequency receiver. The modulator achieves 77 dB of dynamic range and dissipates 81 mW from a 3.3 V supply. It is characterized for the blocking and intermodulation requirements of a cordless teleph...

PURPOSE The authors evaluated, under conditions simulating implant placement, the cutting efficiency, durability, heat production, and wear of implant drills. MATERIALS AND METHODS Osteotomies were performed on bovine ribs using a surgical unit mounted in a testing apparatus. A software program controlled the apparatus and recorded temperatures, depths, and drilling times. Seven brands of dri...