What is it in dentistry?
Facebow is an outer metal tool used in dentistry to accurately record the relative positions of the maxilla or upper teeth against the joints of the jaw. The dental face is usually made of aluminum or thick stainless steel wire. This arc -shaped device measures the character of the patient bites. It is then separate to transfer the occupation of the teeth to the articulator, which causes crowns, bridges and prosthesis. The device allows you to transfer voltage from the dental head to the teeth using straps connected to the head of the headgear. This is useful when repairing cross -bite by pushing the back or stools far back to create additional space for teeth in front of the mouth.
There are four parts of the Facebow device: a U -shaped frame, a rod condylar, a fork biting and a locking mechanism. The frame is a metal arch that supports the entire device. The condyr rods are inserted at the ends of the frame and anchor them over the joints of the jaws. The bitch fork is a letter -shaped board attached to the edges. As a lockThe device is used by a rod that connects the fork bites to the frame.
Dental Facebow determines the relationship between the upper teeth and the joints of the jaws of the representation of two planes. The skull plane is represented by the U -shaped frame, while the fork bites represent the plane of the maxilla. The locking device is inserted to set the aircraft. Proper alignment of the device is essential for creating precise impressions of teeth with articulator.
Two types of faces are arbitrary and kinematic. Any faces include Facia type, headphone type and type of spring. Other subtypes include slidematic, twirlbow and whipmix. The kinematic type is Also called the type of hinge. It is used to create solid partial prostheses and for rehabilitation full of the mouth.
In general, the face must be worn for 12 hours a day. For safety reasons, it is important to make sure it is strapped to the headgear. The head of the head ensures that the tool Je firmly inserted into the buccal holes on the back of the mouth. If the device is bent or twisted, the frame or wire can capture and damage parts of the face such as eyes.