title: Evaluation of Correlation Between apical Diameter and File Size Using Propex Pixi Apex Locator.
abstract: OBJECTIVE
  AIM of this study is to evaluate the influence of critical diameter of apical foramen and file size using propex pixi apex locator in working length determination.
  
  
  METHODS
  In this study, ten single rooted teeth were selected. They were decoronated at cemento enamel junction. After determining the actual working length, they were embedded in alginate mold. Foramina were widened from 0.6mm to 0.8mm. The measurements were taken with electronic apex locator propex pixi with files from sizes 10 K to respective sizes. Statistical accuracy of propex pixi was calculated by using Anova test for different diameters and for the influence of file size.
  
  
  RESULTS
  RESULTS showed that propex pixi apex locator was accurate when foramen diameter is 0.6 (60k file size), its accuracy diminished with increased foramen diameter
  
  
  CONCLUSIONS
  Propex pixi is accurate for foramen diameter of 0.6mm, independent of file size. Its accuracy decreases as apical foramen widens, so care should be taken when using clinically.
authors: Post Graduate, Master of Dental Surgery in Speciality of Conservative Dentistry & Endodontics, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors: Sreeha Kaluva
authors: SK
authors: Kolanu
authors: Head of the Department, Master of Dental Surgery in Speciality of Conservative Dentistry & Endodontics, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors: Nagesh
authors: N
authors: Bolla
authors: Professor, Master of Dental Surgery in Speciality of Conservative Dentistry & Endodontics, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors: Sujana
authors: S
authors: Varri
authors: Professor, Master of Dental Surgery in Speciality of Conservative Dentistry & Endodontics, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors: Jayaprakash
authors: J
authors: Thummu
authors: Professor, Master of Dental Surgery in Speciality of Conservative Dentistry & Endodontics, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors: Sayesh
authors: S
authors: Vemuri
authors: Sr. Lecturer, Master of Dental Surgery in Speciality of Conservative Dentistry & Endodontics, Sibar Institute of Dental Sciences , Guntur, Andhra Pradesh, India .
authors: Pragna
authors: P
authors: Mandava
keywords: Apex locators; Apical widening; File size; Root length determination
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