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Dentoid Limited 0800 678 3035 email |
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DENTOID SINGLE PATIENT USE STERILE ROTARY INSTRUMENTS - DIRECTIONS FOR USE Selection of the optimum instrument for a particular application is paramount to satisfactory performance and for best results, the end user should always adopt a 'no-compromise' approach. The table below will assist in primary choice of instrument.
Equally important as choice of material is the correct cutting speed. The speed applied determines the degree of swarf removal during cutting and has a major impact on the local heat generated at the cutting area. As a rule of thumb, the higher the speed, the faster the swarf removal but higher local heating occurs. With a larger bur diameter, the rotational speed of the bur must be lowered for better control of swarf. The table below summarises the ‘best practice’ approach to many dental applications for rotary instruments.
Safety Considerations Incorrect use of rotary cutting instruments can be dangerous to the operator and persons close by whether a person or an observer. Do not use the burs as levers and/or at incorrect angulations. Eye protection should always be worn, against flying swarf and debris, or possible instrument fracture. Before using, check that the shank locks in the hand-piece. Additionally, it is strongly suggested that masks or respirators are worn against dust and, in the case of high speed handpieces, the mist (aerosol) produced by high speed diamond and TC burs. Always ensure that handpieces are in good working order, lubricated according to manufacturers' recommendations and regularly serviced as required. If handpieces are designed to use water or other coolant, never run them dry. Ensure that the but is fully seated in the chuck, as far as possible to the stop. If a friction grip chuck has a bur change device do not use excessive force, and be sure that applied force is along the bur axis, not off set, which may bend burs, especially those with smaller head sizes. Visually inspect burs before use. If it appears out of true or shows any breakage of flutes, discard and replace immediately. If a handpiece is dropped, inspect the bur again to ensure no damage has occurred and run the bur for a short time away from the work piece to check safe, concentric running. Observe maximum speeds as shown earlier. Bring the burr to the necessary speed before approaching the part to be treated. Be aware that larger diameter or longer rotaries are not suitable for use in high speed turbine handpieces, particularly those with air bearings. For more information regarding suitability, refer to your handpiece manufacturers guidelines. The bur should be moved continuously to prevent localised overheating which may result in local denaturising. This may show as postoperative pain in the case of biological tissues or weakness or failure of other materials, including the bur itself. Where possible always use the bur with a coolant/lubricant. This will extend bur life, ensure better swarf clearance and reduce clogging. High volume aspiration will assist debris removal, clearer vision of working area and some air stream cooling. Precision Steel Rotaries All Dentoid steel burs are manufactured from heat treatable alloy steels, chosen for optimum sharpness characteristics when hardened to 62 Rockwell-C. The burs are supplied with a corrosion inhibiting coating and sterilised, packed individually in a dispenser box. SHANK OPTIONS
Dentoid Precision TC Rotaries 0ur tungsten carbide TC burs are manufactured from high quality tooling grade tungsten carbide tips brazed onto a stainless steel shank. The bur is formed to ensure that the brazed joint is in the neck of the product to maximise strength. The burs are supplied sterile, packed individually in a dispenser box.. SHANK OPTIONS
SHANK, GRIT AND PACKAGING OPTIONS All Dentoid diamond burs are manufactured from the highest quality stainless steel, diamonds and plating materials. Dentoid diamond burs are supplied sterile, packed individually in a dispenser box. The standard FG and FS shanks have a nominal I.S.O. diameter of 1.6rnm to fit standard friction grip chucks on dental handpieces. The nominal overall length for a typical small bur is 19mm for the FG shanks and 16mm for the FS shank. RA shanks are made for the standard dental latch type handpiece. They have a nominal I.S.O, diameter of 2.35mm and a nominal overall length of 22mm for a small bur head. HP shanks have a similar 2.35mm diameter bur without the latch grip at the base. A typical bur would have an overall length of 44.5mm. In the case of FEN burs, the shank is extended to an overall length of 64mm. They are designed to fit the standard straight dental handpiece chuck. The grit sizes referred to in the text correspond to the ISO specifications for diamond burs. Dentoid specifies only natural diamond grit for its product range to ensure optimum performance. The mesh sizes and colour coding for the groups are as follows:-
NO REPROCESSING INSTRUCTIONS ARE ISSUED FOR THESE DENTAL ROTARY INSTRUMENTS FOR STERILIZATION USING STEAM OR DRY HEAT AS THEY ARE SOLD AS SINGLE USE STERILE Check that the package has not been tampered with and that the expiry date is valid. If the packaging has been damaged, do not use it. Discard the product. Discard the bur after use. SINGLE USE ONLY - DO NOT RESTERILISE
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