By and large, dental practitioners suggest that teeth be cleaned professionally in any event twice per year. Professional cleaning incorporates tooth scaling, tooth cleaning, and, if tartar has aggregated, debridement; this is typically trailed by a fluoride treatment. In any case, the Dental Hygienists' Association expressed in 1998 that there is no confirmation that scaling and cleaning just over the gums gives helpful esteem, and cleaning ought to be done under the gums also.