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A dental engine is a large chair-side appliance (often including the dental chair itself) for use in a dentist's office.
American dentist Josiah Flagg created the first adjustable dental chair in the late 18th century, adapting a wooden chair by adding an instrument tray on one side, as well as a movable headrest. This equipment was continually improved, and in the 20th century became an integrated treatment unit, incorporating air, water, gas, and electricity into one piece of equipment.
At this point, patients were treated sitting, with dentists standing. In 1958 John Naughton created a chair with an articulated seat and back, which marked the introduction of what is called "four-handed dentistry".
At minimum, a dental chair serves as a source of mechanical or pneumatic power for one or more handpieces.
Typically, it will also include a small faucet and a spit-sink, which the patient can use for rinsing, as well as one or more suction hoses, and a compressed air/irrigation water nozzle for blowing or washing debris clear of the work area in the patient's mouth.
The equipment possibly includes an
File:Dental Chair.jpg, Close view of dental chair with various visible parts
File:Hospital Dental Engine.jpg, Hospital dental treatment area
File:Machine de soin dentaire à la clinique du bon secours Maroua.jpg, Dental engine in North Cameroon
A dental engine is a large chair-side appliance (often including the dental chair itself) for use in a dentist's office.
American dentist Josiah Flagg created the first adjustable dental chair in the late 18th century, adapting a wooden chair by adding an instrument tray on one side, as well as a movable headrest. This equipment was continually improved, and in the 20th century became an integrated treatment unit, incorporating air, water, gas, and electricity into one piece of equipment.
At this point, patients were treated sitting, with dentists standing. In 1958 John Naughton created a chair with an articulated seat and back, which marked the introduction of what is called "four-handed dentistry".
At minimum, a dental chair serves as a source of mechanical or pneumatic power for one or more handpieces.
Typically, it will also include a small faucet and a spit-sink, which the patient can use for rinsing, as well as one or more suction hoses, and a compressed air/irrigation water nozzle for blowing or washing debris clear of the work area in the patient's mouth.
The equipment possibly includes an ultrasonic cleaning
Ultrasonic cleaning is a process that uses ultrasound (usually from 20 to 40 kHz) to agitate a fluid, with a cleaning effect. Ultrasonic cleaners come in a variety of sizes, from small desktop units with an internal volume of less than , to large ...
appliance, as well as a small table to hold the instrument tray, a operating light, and possibly a computer monitor or display.
LED operating lights have transformed the user experience in recent years providing a 'cool' light, with a bulb that doesn't need changing and which floods the oral cavity with a light distribution that reduces shadows, and in turn eye strain
Eye strain, also medically termed as asthenopia (), is a common eye condition characterized by nonspecific symptom, non-specific symptoms such as fatigue, pain in or around the eyes, blurred vision, headache, and occasional diplopia, double vis ...
. A light with a high color rendering index
A color rendering index (CRI) is a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with a natural or standard light source.
''Color rendering'', as defined by the Internat ...
accurately reflects colour for soft and hard tissue diagnosis
Diagnosis (: diagnoses) is the identification of the nature and cause of a certain phenomenon. Diagnosis is used in a lot of different academic discipline, disciplines, with variations in the use of logic, analytics, and experience, to determine " ...
; some lights also have a useful composite mode, which illuminates without curing photo-initiated resins.
Due to their design and use, dental chairs are a potential source of infection from several kinds of bacteria
Bacteria (; : bacterium) are ubiquitous, mostly free-living organisms often consisting of one Cell (biology), biological cell. They constitute a large domain (biology), domain of Prokaryote, prokaryotic microorganisms. Typically a few micr ...
, including Legionella pneumophila
''Legionella pneumophila'', the primary causative agent for Legionnaires' disease, Legionnaire's disease, is an Aerobic organism, aerobic, pleomorphic, Flagellum, flagellated, non-spore-forming, Gram-negative bacteria, Gram-negative bacterium. ' ...
. Tuesday, 20 April 2021
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References
{{Reflist Dental equipment