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:: Volume 7, Issue 3 (Res Dent Sci 2010) ::
J Res Dent Sci 2010, 7(3): 37-41 Back to browse issues page
The accuracy of linear tomography in mandibular width determination in superior border of mandibular canal
Tahereh Mohtavi pour * , Fatemeh Shahsavari , Hoorieh Bashi zadeh fakhar , Farid Abolhassani
Assistant Professor, Department of Oral & Maxillofacial Pathology, Islamic Azad university,Dental Branch,Tehran,Iran , se_mohtavipour@yahoo.com
Abstract:   (34301 Views)

  The accuracy of linear tomography in mandibular width determination in superior border of mandibular canal

 

 

  Mohtavi pour S.T 1 , Shahsavari F 2 , BashizadehFakhar H 3 , Abolhasani F 4

  

  1Assistant Professor, Department of oral & maxillofacial radiology, school of Dentistry, Guilan University of Medical Sciences

  2 Assistant Professor, Department of Oral & Maxillofacial Pathology, Islamic Azad university,Dental Branch,Tehran,Iran

  3 Assistant Professor, Department of oral & maxillofacial radiology, school of Dentistry, TehranUniversity of Medical Sciences

  4 Assistant Professor, Department of Anatomy, Tehran University of Medical Sciences

 

 

 

 

 

 

  

  

  Abstract

 

  Background and Aim:

  Finding an accurate and inexpensive method in measurement of bone width for determination of implant size is critical. Linear tomography is a cost effective method and there is no accurate finding about accuracy of linear tomography in evaluation of mandibular wide .The purpose of this study was to determine the accuracy of linear tomography in estimation of mandibular width.

  Materials and Methods:

  In this diagnostic study (estimation of one method), 23 sites of four dry mandibles were selected and marked at the crest with a metal ball markers. After linear tomography in these sites, the width of mandible in the superior border of inferior alveolar canal was measured. The mandibles were then sectioned . The Pearson ' s rank order correlation coefficient between linear tomography and real values was determined. Then with estimation of mean absolute differences by magnification factor, the percentages of errors in ±1mm error limits were determined. The regression equation was written for better determination of agreement rate between radiographic and real values. The percentages of errors in ±1 mm error limits were determined.

  Results:

  The Pearson's rank order correlation coefficient between the linear tomography and real values was 0.813(P<0.0001). The mean absolute differences between the mandibular width in tomographic sections and real values was 0.3 mm (SD=1.13) and 56.5% of width measurements were within the ±1mm error limits. By the resulting linear regression equation 51.8% of tomographic values were located within the ±1mm error limits .

  Conclusion: Linear tomography in evaluation of mandibular width should be used more cautiously.

  Keywords: Tomography, Mandible, Implant

  Manuscript submitted: July 2010, Revised and acceptance Dec 2010

  


  Corresponding Author : S.T Mohtavi pour Assistant professor, Department of oral & maxillofacial radiology, school of Dentistry, Guilan University of Medical Sciences Tel:9111360412-Email: se_mohtavipour@yahoo.com

 

Keywords: Tomography, Mandible, Implant
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Type of Study: original article | Subject: oral surgery
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Mohtavi pour T, Shahsavari F, Bashi zadeh fakhar H, Abolhassani F. The accuracy of linear tomography in mandibular width determination in superior border of mandibular canal. J Res Dent Sci 2010; 7 (3) :37-41
URL: http://jrds.ir/article-1-6-en.html


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Volume 7, Issue 3 (Res Dent Sci 2010) Back to browse issues page
مجله تحقیق در علوم دندانپزشکی Res Dent Sci
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