B. Piskin et al., NEURAL CHANGES IN ULCERATIVE AND HYPERPLASTIC PULPITIS - A TRANSMISSION ELECTRON-MICROSCOPIC STUDY, International endodontic journal, 26(4), 1993, pp. 234-240
The purpose of this study was to examine at ultrastructural level the
neural changes in human apical pulps of teeth clinically diagnosed as
having ulcerative or hyperplastic pulpitis. Seventeen specimens were p
repared from six teeth with ulcerative or hyperplastic pulpitis and fo
ur specimens from two sound teeth. After routine procedures the specim
ens were examined under an electron microscope for changes in the stru
cture of myelinated and unmyelinated nerve fibres. Although the teeth
used in this study responded positively to vitality test, the results
revealed that moderate to severe degenerative changes occurred in the
nerve fibres of the apical pulps of the teeth showing these two diseas
es.