Frequency of root curvatures in molars – an in vitro study
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Дата
2010-10
Автори
Boteva, E.
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Издател
Централна медицинска библиотека, МУ София / Central Medical Library - MU Sofia
Резюме
Root canal curvatures are often the main reason for a poor root
canal treatment. The clinical x-ray images often do not give a precise view of the
degree of the root curvature from the axial axis. The aim of the present study was
to measure the severe curvatures > 25º separately for upper and lower jaw in
representative number of extracted human molars. The length of each root was
measured from the respective cusp for all 771 roots. All deviations were measured
in the apical half of the roots, and registered when higher then 25-30º. The data
shows that 47 of 461 upper teeth (10%) and 49 of 312 lower teeth (15.7%) were
with severe curvatures. The highest numbers were found in lower third molars –
19.2%. In Bulgaria, root lengths are lower, than in the commonly used tables. This
two fi ndings are proving the higher risk of iatrogenic mistakes during root canal
treatment. We found diagnostic x-rays and a working hypothesis for curvatures of
each root after the fi rst half essential.
Описание
Address for corespondence:
Assoc. Prof. E. Boteva
Department of Conservative Dentisty
Faculty of Dental Medicine
1 Sv. G. Sofiisky str.
1431 Sofia
mob. tel.: 0898 26 48 09
e-mail: e_boteva@abv.bg
Ключови думи
root, curvatures, molars
Цитирания
E. Boteva. Frequency of root curvatures in molars – an in vitro study - Acta Medica Bulgarica, 37, 2010, № 2, 89-93.