Ayad, F <br/><br/>
A six-week clinical efficacy study of a new dentifrice for the removal of extrinsic tooth stain.  [electronic resource] 

 -  The Journal of clinical dentistry  1999 
 - 103-6 p.  digital 
<br/><br/> Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial 
<br/><br/><label>ISSN: </label>0895-8831 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adolescent<br/>Adult<br/>Aged<br/>Complex Mixtures<br/>Dentifrices--therapeutic use<br/>Double-Blind Method<br/>Female<br/>Humans<br/>Longitudinal Studies<br/>Male<br/>Middle Aged<br/>Polyphosphates<br/>Silicic Acid<br/>Silicon Dioxide--therapeutic use<br/>Sodium Fluoride--therapeutic use<br/>Tooth Bleaching--methods<br/>Tooth Discoloration--therapy<br/>Toothpastes<br/>Treatment Outcome