![]() The insert tips were parallel to the tooth axis and the working strokes ran ![]() 6A, Hu-Friedy, Leimen, Germany) after instrumentingĮach tooth. The curette was re-sharpened with a sharpening stone With the hand curette the working strokes ran from apical to coronal direction, parallel In Group C teeth were scaled with an EMS piezoelectric ultrasonic device with prototype USA) In Group B Cavitron TM FSI - SLI TM ultrasonic device withįocused spray slimline inserts (Dentsply International Inc., York, PA, USA) were used. Universal hand curette (Hu Friedy Gracey After Five Vision curette Hu Friedy, Chicago, In Group A all teeth were carefully scaled with a new The teeth were to be instrumented with hand and ultrasonic instruments Each tooth was positioned horizontally on a dental stone block of 1 Subgingival calculus were divided into 3 experimental groups using a randomized rank Thirty periodontally compromised extracted human teeth with supragingival and The efficacy of manual, magnetostrictive and piezoelectric ultrasonic instruments. Thus, the present study was conducted to comparatively evaluate Little has been published about the piezoelectric Investigated only magnetostrictive ultrasonic scalers 6, 7, 18. Ultrasonic scaler removed the least root surface substance. This concern was subsequently put to rest by studies such as that of Initially, ultrasonic scalers were employed with apprehension because of suspected root Of the root planed surface can be performed only by means of scanning electron Stereomicroscope to evaluate the residual calculus after extraction of the root planed Immediately after treatment in order to observe directly the cleanliness and surfaceĬharacteristics of the root planed surfaces. Healing around the treated teeth can be evaluated, or the teeth may be extracted The efficacy of root planing procedures can be studied in two different ways. Instruments is impossible or rare even when a surgical approach is used 3, 19. Complete removal of subgingival calculus with hand or ultrasonic The treatment of chronic periodontitis 20. Studies do not indicate a difference between ultrasonic/sonic and manual debridement in Objective can be achieved with hand scalers and curettes or ultrasonic scaling ![]() One of the objectives of periodontal therapy is the reduction of bacterial deposits and
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