Changes

==Compressed Air Driven Unit==

==Compressed Air Driven Unit==

The basic compressed air driven unit consists of a '''high-speed hand piece with water cooling''', a slow-speed hand piece (with or without water cooling) and a combination air/water syringe, driven by a air compressor.<br><br>

The basic compressed air driven unit consists of a '''high-speed hand piece with water cooling''', a slow-speed hand piece (with or without water cooling) and a combination air/water syringe, driven by a air compressor.<br><br>

A high-speed hand piece facilitates extraction by allowing easy sectioning of multi-rooted teeth and [[Bones - Anatomy & Physiology|bone]] removal prior to extraction. It allows accurate application of coolant water to the end of the drill tip. The turbine spins at about 300000-400000 rpm. It is designed for high speed and low-torque and should be used with the foot pedal fully depressed to achieve this. The cartridge in the head of the handpiece is driven by compressed air. The cartridge is a turbine, mounted on bearings around a clutch mechanism that holds the bur in place. Investing in a high-speed hand piece with fibre-optic light is strongly recommended.<br><br>

The high-speed hand piece facilitates extraction by allowing easy sectioning of multi-rooted teeth and [[Bones - Anatomy & Physiology|bone]] prior to extraction. It allows accurate application of coolant water to the end of the drill tip. The turbine spins at about 300000-400000 rpm. It is designed for high speed and low-torque and should be used with the foot pedal fully depressed to achieve this. The cartridge in the head of the handpiece is driven by compressed air. The cartridge is a turbine, mounted on bearings around a clutch mechanism that holds the bur in place. Investing in a high-speed hand piece with fibre-optic light is strongly recommended.<br><br>

The slow-speed hand pieces are driven by an air motor, driven by the compressor. Each handpiece can be adjusted for direction (forward and reverse) and speed. The air motor speed has a maximum of 25000 -30000 rpm. The slow speed handpiece accommodates the contra-angle hand piece used for polishing the teeth as well as straight or nose-cone handpieces. The contra-angle handpieces are slightly offset, and have a latch grip mechanism to hold burs or polishing heads/brushes. Contra-angle handpieces most commonly used in veterinary practice are 1:1 meaning that the output speed is the same as the air motor speed. Speed increasing handpieces are available and are better for sectioning teeth, whilst speed reducing handpieces are also available and more commonly used for restorative dental procedures.<br><br>

The slow-speed hand pieces are driven by an air motor, driven by the compressor. Each handpiece can be adjusted for direction (forward and reverse) and speed. The air motor speed has a maximum of 25000 - 30000 rpm. The slow speed handpiece accommodates the contra-angle hand piece used for polishing the teeth as well as straight or nose-cone handpieces. Contra-angle handpieces are slightly offset, and have a latch grip mechanism to hold burs or polishing heads/brushes. Contra-angle handpieces most commonly used in veterinary practice are 1:1 meaning that the output speed is the same as the air motor speed. Speed increasing handpieces are available and are better for sectioning teeth, whilst speed reducing handpieces which are also available are more commonly used for restorative dental procedures.<br><br>

The three-way syringe can deliver either a stream of water or a spray of water and air, or air only. It is used to irrigate/ lavage the [[Oral Cavity Overview - Anatomy & Physiology|mouth]] (water or water/air spray) and to dry the teeth (air only). Suction is also available with some units.<br><br>

The three-way syringe can deliver either a stream of water or a spray of water and air, or air only. It is used to irrigate/lavage the [[Oral Cavity Overview - Anatomy & Physiology|mouth]] (water or water/air spray) and to dry the teeth (air only). Suction is also available with some units.<br><br>

Investing in a compressed air driven unit from the outset is recommended. The high-speed hand piece greatly facilitates tooth sectioning and the three-way syringe (for lavage and drying) will aid in the removal of debris and improve visibility during examination and any procedure.

Investing in a compressed air driven unit from the outset is recommended. The high-speed hand piece greatly facilitates tooth sectioning and the three-way syringe (for lavage and drying) will aid in the removal of debris and improve visibility during examination and any procedure.