An object, usually a metal bar, placed into the mouth of a horse, held on by a bridle and used with reins to direct and guide the animal. Occasionally made of other materials, including rubber.May be solid or jointed and may have rollers or other attachments added, usually in the center.
There are 32 teeth in the human mouth, including the wisdom teeth at the back that most people have removed. But how many of them do we seriously need? This question has exercised dentists since the dawn of the NHS with its cash-limited budget for treatment.
Molars: Molars are the large teeth with four cusps located in the back of the mouth behind the premolars. Adults have twelve molars (four being wisdom teeth), with six in the upper and six in the lower arches; three on each side of the mouth. Molars have wide, flat surfaces for biting, chewing and grinding food.