This not a positive or negative. However, this was my third visit and each experience has been a bit different. The cleaning: the first and second visit, plaque was removed the old fashion way or using the manual tool. The third visit was using the water pic method and then going over with manual tool. Not sure why the difference in method, but i prefer consistency. Also, i had fluoride added and the first time each tooth was individually brushed and the area of sensitivity seemed to get more attention. This visit, it was in four long swoops along the gum line. Since it is an extra service I pay for, I would have liked the attention given like the first time, but not sure what the proper method is. Again, i just prefer consistency in . cleaning methods.