This type of X-ray is also called a panoramic or OPG X-ray. An extraoral dental x-ray will help your dentist find: Almost all of the hand-held instruments are made of stainless-steel or occasionally carbon steel. Chisels and scalers usually have tungsten carbide recommendations. The basic design of a hand instrument https://www.liveinternet.ru/users/hansawila/post504307462/