TY - JOUR JF - JIDA JO - J Iran Dent Assoc VL - 23 IS - 4 PY - 2011 Y1 - 2011/12/01 TI - Effect of ultrasonic scaler on the microleakage of Cl V tooth colored restorations TT - بررسی اثر جرم‌گیری با دستگاه اولتراسونیک بر ریزنشت ترمیمهای Cl V همرنگ دندان N2 -   Effect of ultrasonic scaler on the microleakage of Cl V tooth colored restorations     Dr. Maleki-Pour MR.,1 Dr. Shirani F.,2 Dr. Ketabi M., 3 Dr. Roshan-Talab-Haghani H., 4 Dr. Tahririan D. 4     1 Assistant Professor, Department of Operative Dentistry , School of Dentistry, Azad University. Khorasgan Branch. Isfahan , Iran. 2 Assistant Professor, Department of Operative Dentistry , School of Dentistry, Isfahan University of Medical Sciences. Isfahan , Iran. 3 Assistant Professor, Department of Periodontics, School of Dentistry, Azad University. Khorasgan Branch. Isfahan , Iran. 4 Dentist .     (Received 23 Jan, 2011 Accepted 31 July, 2011 )     Abstract     Background and Aim : Class V cavities are mostly filled with tooth colored restorations. Microleakage is an important problem with tooth colored restorations. Some studies show that ultrasonic scalers could cause microleakage. The aim of this study was to examine the effects of ultrasonic scaling on three different tooth colored restorations namely, composite resin, glass-ionomer and comboglass.   Materials and Methods : In this in-vitro study, sixty extracted premolars were randomly divided into three groups of 20 teeth. In all the teeth the same size class V cavity was prepared. First, second and third group teeth were filled with composite, gloss inomer and compoglass, respectively. After thermocycling, half of the teeth in each group were scaled with ultrasonic (test group) whereas, the other half were used as control. Then, all the specimens were kept in 2% fuchsin for dye penetration testing for approximately 24 hours. After sectioning, the specimens' microleakage was quantified with steriomicroscope. The data were analyzed statistically by Kruskal-Wallis analysis and Mann-Whitney U-tests with Bonferroni's correction.   Results: In the first (composite) and third (compoglass) groups ultrasonic scaling had no effect on microleakage (P>0.05) whereas, in the second group (glass-ionomer) ultrasonic scaling caused more microleakage than the control group. The difference was statistically significant (P SP - 239 EP - 246 AU - Maleki-Pour, Mohammad reza AU - Shirani, Farzaneh AU - Ketabi, Mohammad AU - Roshan-Talab-Haghani, Hasan AU - Tahririan, Dana AD - KW - Dental Scaling KW - Micro leakage KW - Composite resins KW - Ultrasonic UR - http://jida.ir/article-1-1151-en.html ER -