![]() The sonic scalers operate at a lower frequency of about 6,000 to 8,000 cycles/second (6-8 KHz). At higher power setting, longer strokes are produced while at a lower power setting, smaller strokes are produced with the frequency being constant. In recent ultrasonic scalers, the amplitude can be increased or decreased by increasing or decreasing the power setting. It is the maximum distance to which the tip of the scaler moves during one cycle. Scaler frequency and associated tip movement Higher the frequency lesser is the active area of the scaler tip. The frequency determines the active area of the tip. It is measured in kilohertz (KHz) in scalers. It is the number of times per second the tip of the scaler moves back and forth during one cycle of orbital, elliptical or linear motion. ![]() ![]() Before we discuss these scalers, we should know the following terminologies, Frequency: The power-driven scalers are of two types: sonic and ultrasonic. The manual scalers have been discussed in detail in “Periodontal instruments”. There are two basic types of scalers: manual and power-driven. A host response is generated against these bacteria which causes the production of cytokines, prostaglandins, and chemokines by various inflammatory cells, leading to inflammation and bone loss 2.ĭental calculus is calcified plaque which provides a ……. As the plaque matures, more and more Gram-negative bacteria are established in the dental biofilm initiating periodontal destruction. Within another 48 hours, as the biofilm matures, periodontopathic anaerobes are established initiating gingivitis 1. It has been shown that after a thorough oral prophylaxis, the biofilm formation starts within a few hours on the tooth surface. Need to eliminate plaque and calculus around the teeth Supra- and subgingival scaling is a routine procedure carried out to achieve a tooth surface free of plaque and calculus and helping in self-performed plaque control by the patient. At the same time, every effort is made to protect the healthy periodontal tissue from any damage. The periodontal treatment is initiated with the removal of bacterial deposits and calculus from the tooth surfaces to obtain a biologically acceptable root surface. Periobasics Clinical Periodontology, Recent Posts Introduction to scaling and root planing
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