Achieving strategic synergy between diversified businesses is one of the important objectives world-class enterprises, and relevant operational decision-making technology a hot topic. At present, world’s leading including large energy are widely engaged in operations, continue to promote main business financial business, international emerging industries other auxiliary businesses. In this pape...

introduction: excessive temperature rise during drilling of the mandible for dental implant placement might damage adjacent osseous tissues. various factors affect temperature rise, including the geometrical parameters of surgical drills, one of which is the drill bit head angle. the aim of this research was to determine suitable drill bit head angle to induce minimum temperature rise during ma...