Internal root resorption studied by radiography, stereomicroscope, scanning electron microscope and computerized 3D reconstructive method.
OBJECTIVE
Two cases of internal tooth resorption were examined. A mandibular premolar and a mandibular canine were studied after they were extracted using radiographs, a stereomicroscope (SM) and a scanning electron microscope (SEM). Lastly, 3D images of the sectioned teeth were obtained(3D).


RESULTS
Radiographically, internal root resorption was shown as a uniform radiolucency. By SM examination, an extensive destruction of dentin was seen, while, by SEM examination, a disappearance of dentinal tubules was clear. The 3D reconstructive method revealed a circumscribed, oval-shaped defect that did not perforate the cemental layer.


CONCLUSIONS
Internal root resorption is a rare remodeling process that can be studied using different experimental methods.
Lyroudia
Kleoniki M
KM
Department of Endodontology, Dental School, Aristotle University of Thessaloniki, Greece. lyroudia@zeus.csd.auth.gr
Dourou
Vasiliki I
VI
Pantelidou
Ourania C H
OC
Labrianidis
Theodoros
T
Pitas
Ioannis K
IK
D001641:Bicuspid / Q000000981:diagnostic imaging / Q000473:pathology / Q000648:ultrastructure; D003481:Cuspid / Q000000981:diagnostic imaging / Q000473:pathology / Q000648:ultrastructure; D003804:Dentin / Q000000981:diagnostic imaging / Q000473:pathology / Q000648:ultrastructure; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional; D008855:Microscopy, Electron, Scanning; D016613:Plastic Embedding; D011859:Radiography; D012391:Root Resorption / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D019237:Tooth Cervix / Q000000981:diagnostic imaging / Q000473:pathology / Q000648:ultrastructure; D014092:Tooth Root / Q000000981:diagnostic imaging / Q000473:pathology / Q000648:ultrastructure; D014743:Videotape Recording