Portenier, I <br/><br/>
Preparation of the apical part of the root canal by the Lightspeed and step-back techniques.  [electronic resource] 

 -  International endodontic journal  Mar 1998 
 - 103-11 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article 
<br/><br/><label>ISSN: </label>0143-2885 
<br/><br/><label>Standard No.: </label>10.1046/j.1365-2591.1998.00116.x  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dental Instruments<br/>Dental Pulp Cavity--anatomy & histology<br/>Humans<br/>Root Canal Preparation--instrumentation<br/>Tooth Apex