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Scanning Electron Microscopy Evaluation of Dental Root Resorption Associated With Granuloma

Published online by Cambridge University Press:  03 August 2015

Manila Chieruzzi ,
Stefano Pagano ,
Carlo De Carolis ,
Stefano Eramo  and
José M. Kenny
Manila Chieruzzi*
Affiliation:
Civil and Environmental Engineering Department, University of Perugia, UdR INSTM, Strada di Pentima 4, 05100 Terni, Italy
Stefano Pagano
Affiliation:
Faculty of Medicine and Surgery, University of Perugia, S. Andrea delle Fratte, 06156 Perugia, Italy
Carlo De Carolis
Affiliation:
Faculty of Medicine and Surgery, University of Perugia, S. Andrea delle Fratte, 06156 Perugia, Italy
Stefano Eramo
Affiliation:
Department of Restorative Dentistry, Faculty of Medicine and Surgery, University of Perugia, S. Andrea delle Fratte, 06156 Perugia, Italy
José M. Kenny
Affiliation:
Civil and Environmental Engineering Department, University of Perugia, UdR INSTM, Strada di Pentima 4, 05100 Terni, Italy
*
*Corresponding author. manila.chieruzzi@unipg.it
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Abstract

The inflammatory resorption of dental root apex (i.e., the process of removal of cementum and/or dentine through the activity of resorbing cells) may show different configurations and damage the apical root structure. As knowing the morphology of resorption areas of human teeth is essential for the success of endodontic treatments, we investigated the apical resorption by scanning electron microscopy, focusing on roots with granulomas. A total of 30 teeth (with penetrating carious lesions and chronic periapical lesions) were examined, the apical third of the roots were removed and analyzed to estimate periforaminal and foraminal resorption, shape and morphology of foramen resorption, centering of the periforaminal resorption area, and diameters of each apical foramen. Periforaminal resorption was present in all samples, whereas foraminal resorption was present in 92% of cases (mainly funnel shaped). Lacunae were observed in the foraminal resorption area with an average diameter of 35±14 μm. The major and minor diameters of the foramina in teeth with resorption were 443 and 313 μm, respectively (higher than in healthy teeth). This result indicates an expansion of the apical diameters caused by the pathology, which could encourage a different clinical instrumentation for these teeth.

Keywords

SEMexternal root resorptionpermanent teethforamen morphologygranuloma
Type
Biological Applications
Information
Microscopy and Microanalysis , Volume 21 , Issue 5 , October 2015 , pp. 1264 - 1270
Copyright
© Microscopy Society of America 2015 

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