de Oliveira Guilherme José Pimentel Lopes, Pinotti Felipe Eduardo, da Luz Carvalho Heglécia, Scardueli Cássio Rocha, Marcantonio Rosemary Adriana Chiérici
Univ. Estadual Paulista - UNESP, Department of Diagnosis and Surgery, Araraquara School of Dentistry, Araraquara, SP, Brazil ; Department of Health Sciences, Implantology Post Graduation Course, School of Dentistry, University Center of Araraquara - UNIARA, Araraquara, São Paulo, Brazil.
Univ. Estadual Paulista - UNESP, Department of Diagnosis and Surgery, Araraquara School of Dentistry, Araraquara, SP, Brazil.
J Lasers Med Sci. 2016 Winter;7(1):51-5. doi: 10.15171/jlms.2016.11. Epub 2016 Jan 7.
The aim of this study was to evaluate the influence of different levels of external irrigation during irradiation with an erbium, chromium: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser on the roughness and wear of dental tissue during scaling procedures.
Twenty-Five uniradicular bovine teeth had the proximal surfaces planed and divided into 3 regions: upper, middle and lower. The upper region was treated with hand instruments, the middle region was not treated and served as a control, and the lower region was treated by the Er,Cr:YSGG laser. The teeth were randomly divided into five groups according to the different proportions of external irrigation used during the laser irradiation: G1: 10%; G2: 20%; G3: 30%; G4: 40% and G5: 50%. The samples were analyzed for roughness and wear on the root surface irradiated with the laser.
There were no differences in the surface roughness and wear parameters between the groups irradiated with the laser, but the laser irradiation produced a rougher surface of the dentin than treatment with hand scaling.
Changes in the external irrigation level did not influence the wear and roughness of root surfaces treated with an Er,Cr:YSGG laser.
本研究的目的是评估在使用铒铬钇钪镓石榴石（Er,Cr:YSGG）激光进行洁治操作时，不同水平的外部冲洗对牙体组织粗糙度和磨损的影响。
25颗单根牛牙的近中面被打磨平整并分为3个区域：上部、中部和下部。上部区域用手工器械处理，中部区域不做处理作为对照，下部区域用Er,Cr:YSGG激光处理。根据激光照射期间使用的不同外部冲洗比例，将牙齿随机分为五组：G1：10%；G2：20%；G3：30%；G4：40%和G5：50%。对激光照射的牙根表面样本进行粗糙度和磨损分析。
激光照射组之间的表面粗糙度和磨损参数没有差异，但激光照射使牙本质表面比手工洁治更粗糙。
外部冲洗水平的变化不会影响用Er,Cr:YSGG激光处理的牙根表面的磨损和粗糙度。
