Ultrasonic Dental Unit Ultrasonic Prophylaxis Unit Dental

The ultrasonic unit with insert tips (see figure 4-10) is used to remove supragingival and subginginval calculus, stains, amalgam overhangs, and soft tissue pocket wall (curettage). Operating at 25,000 cycles per second, energy is transferred to the calculus, stain, amalgam overhang, or tissue, causing separation from the tooth surface. Operator fatigue is greatly reduced and productivity is increased with the use of an ultrasonic unit. A high-speed evacuator is necessary to keep the bacteria-containing aerosol mist from the air in the operatory. Hand scaling, however, is still the preferred method for root planing. There are two types of ultrasonic units. One type of unit has its own water supply and instrument box. A second type of unit resembles a handpiece and operates using the high-speed handpiece hose.

Figure 4-10. Ultrasonic dental unit. 4-3. INSTRUMENT SETUPS AND SURGICAL PROCEDURES

a. General. Most of the procedures performed in periodontal surgery have a setup similar to restorative dentistry. In addition, depending on the training of the dental specialist and the techniques and treatment procedures of the dental officer, the dental specialist may perform as a special surgical assistant, dental hygienist, or oral health manager. The treatment in periodontics varies somewhat from restorative dentistry in that there is more emphasis on oral medicine, surgical therapy, prevention, and long-term maintenance care. See figure 4-11 for the basic periodontal instrument setup.

NOTE: As an example of a periodontal surgical procedure, we will discuss the role of the dental specialist in a gingivectomy. A gingivectomy is a procedure that is fairly well-known among the general public. It is discussed in paragraph "c" below.

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PERIODONTAL PROSE

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SUTURE SCISSORS

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PERIODONTAL POCKET MARKER

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COTTON PLIERS

SURGICAL KNIFE HANDLE AND BLADES

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COTTON BALL DISPENSER

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MOUIH MIRROR

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SALIVA EJECTOR

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EXPLORER

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GAUZE

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PERIODONTAL KNIFE

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COTTON.TIP APPLICATORS

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PERIODONTAL SCALERS AND FILES

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COTTON ROLLS

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SURGICAL SCISSORS

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TOPICAL ANESTHETIC MATERIAL

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SUTURE NEEDLE HOLDER

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ASPIRATING SYRINGE

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SUTURE NEEDLE AND SUTURE MATERIAL

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CARTRIDGE OF ANESTHETIC SOLUTION

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HEMOSTAT

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DISPOSABLE NEEDLES

Figure 4-11. Basic periodontal surgical tray setup.

b. Preparation to Receive the Patient. Preparation to receive a patient begins with the cleanup and sterilization of instruments and materials used during the treatment of the previous patient. Following the dismissal of the previous patient, all evidence of treatment of that patient should be removed. Used instruments should not be allowed to accumulate. They should be cleaned, sharpened as needed, sterilized, and returned to storage as time permits during and between appointments. Linens, bracket table covers, and headrest covers should be replaced. The patient's records and radiographs should be set out for the dental officer's reference. Instruments and materials set up for local anesthesia and the planned periodontal procedures should be placed on the bracket table and covered with a sterile drape.

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