He, Tao <br/><br/>
Extrinsic stain removal efficacy of a stannous fluoride dentifrice with sodium hexametaphosphate.  [electronic resource] 

 -  The Journal of clinical dentistry  2007 
 - 7-11 p.  digital 
<br/><br/> Publication Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0895-8831 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Aged<br/>Cariostatic Agents--therapeutic use<br/>Epidemiologic Methods<br/>Female<br/>Humans<br/>Male<br/>Middle Aged<br/>Phosphates--therapeutic use<br/>Tin Fluorides--therapeutic use<br/>Tooth Discoloration--therapy<br/>Toothpastes--chemistry