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In dentistry, a crown or a dental cap is a type of dental restoration that completely caps or encircles a tooth or dental implant. A crown may be needed when a large dental cavity threatens the health of a tooth. Some dentists will also finish root canal treatment by covering the exposed tooth with a crown.
Extraction forceps are commonly used to remove teeth. Different shaped forceps are available depending on the type of tooth requiring removal, what side of the mouth (left or right) it is on and if it is an upper or lower tooth. The beaks of the forceps must grip onto the root of the tooth securely before pressure is applied along the long axis ...
However, most dental forceps are not designed for comfort, nor do they take the account of the dental practitioners hand positions throughout the procedure to mind. [9] Dental forceps have been designed to the point where dentists experience medical complications of their own on the carpal scale considering their hands are always placed in an ...
Air turbine used in a dental handpiece Correlation between rotational speed and torque Correlation between rotational speed and turbine output power. The turbine is powered by compressed air between 35 and 61 pounds per square inch (~2,4 to 4,2 bar), [1] [2] which passes up the centre of the instrument and rotates a Pelton wheel in the head of the handpiece.
He further writes that, if the root had been left behind, the physician should remove it utilizing a pair of forceps called a rhizaga. The rhizaga could also be used to remove a cavity, although according to Celsus this procedure should be performed after the cavity had been filled with a lead amalgam to ensure the dental crown remained intact ...
Dental composites are also used as indirect restoration to make crowns and inlays in the laboratory. These materials are similar to those used in direct fillings and are tooth-colored. Their strength and durability is not as high as porcelain or metal restorations and they are more prone to wear and discolouration.
Coupland's Elevators. Elevators (also known as luxators) are instruments used in dental extractions.They may be used to loosen teeth prior to forceps extraction, to remove roots or impacted teeth, when teeth are compromised and susceptible to fracture or when they are malpositioned and cannot be reached with forceps.
An Allis clamp (also called the Allis forceps) is a commonly used surgical instrument. It was invented by Oscar Allis. The Allis clamp is a surgical instrument with sharp teeth, used to hold or grasp heavy tissue. It is also used to grasp fascia and soft tissues such as breast or bowel tissue. [1]