Er_Cr_YSGG激光制洞对光固化复合树脂边缘微渗漏的影响_贾兴亚.pdf

( Ch in J Conserv Dent) 2011, 21( 8) # 441# Er, Cr: Y GG激光制洞对光固化复合 树脂边缘微渗漏的影响 1 2 2 贾兴亚 , 王凤艳 , 刘 策 (辽宁 沈阳: 1. 中国医科大学口腔医学院干诊科, 110002; 2. 市铁西区牙病防治 口腔内科, 110021) [ ] : , E r, C r: Y GG : 20 ( n= 10), E r, Cr: Y GG FL-BOND, TPH , , 37 e 7 d, 500 ( 5 ? 2) e ) ( 55 ? 2) e 0. 5% 24 h, , , P 11. 0 : , (P 0. 05): , E r, Cr: Y GG [] Er, Cr: Y GG ; ; ; [] R781. 05 [] A [] 1005- 2593(2011) 08- 0441- 04 [, 2010, 21( 8): 441] The effect ofEr, Cr:YSGG laser irradiation on the microleakageof composite resin restorations * JIA X ing- ya , WANG Feng- yan, LIU Ce * ( VIP D epartmen,t School of Stomatology, ChinaM edical University, Shenyang 110002, China) [Abstract] AIM: To compare them icroleakage ofC lass V resin com pos ite restorations follow ing Er, Cr: Y - GG laser and high- speed rotary preparation us ing a self- etch adhes ive system. MET ODS: Tw enty orthodontically extracted hum an premolarsw ere random ly d ivided into two groups (n = 10) and C lass V cavitiesw ere prepared in the teeth w ith Er, Cr: Y GG laser or bur. The cavitiesw ere then coated w ith FL- BOND adhesive system and TPH resin com posite w as used for restoration. A fter finishing and polishing, the teeth were stored for seven days in d istilledw ater at 37 e before they w ere subjected to therm ocycling for 500 tmi es ( 5 ? 2e - 55 ? 2e ). Th