Premium
Dentinal tubules at the root ends of apicected teeth: a scanning electron microscopic study
Author(s) -
TIDMARSH B. G.,
ARROWSMITH M. G.
Publication year - 1989
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/j.1365-2591.1989.tb00922.x
Subject(s) - dentinal tubule , dentistry , scanning electron microscope , materials science , orthodontics , medicine , dentin , composite material
Summary. Two groups of teeth, one of which contained teeth of known age, were examined by scanning electron microscopy to ascertain the presence of a potential pathway for leakage at the root ends of apicected teeth. At a point approximately 3 mm from the apex, a level chosen as being typical for apicectomy, and half‐way between the root canal and the dentine‐cementum junction, there were found to be, on average, 27,000 tubules per mm 2 . Older teeth also displayed large numbers of tubules. Close to the dentine‐cementum junction, an area which may communicate with the root canal even in the presence of a retrograde root filling, an average of 13,000 tubules per mm 2 were found.