A study on the thickness of radicular dentine and cementum in anterior and premolar teeth.
OBJECTIVE
This study aimed to measure the thickness of radicular dentine and cementum in incisors, canines and premolars, and to develop geometric average models.


METHODS
The roots of 220 extracted human teeth were sectioned in three horizontal parallel planes and measured using an optical microscope. For each cut surface buccal, lingual, mesial, and distal thickness of the root wall was measured. Mean values of the thickness at each location of each cut surface were calculated. The observed differences in thickness by tooth type, location, and section were compared by ANOVA and Student's t-test.


RESULTS
Maxillary central incisors and maxillary canines had the greatest widths. In all teeth with a single root, the wall thickness were greater on the lingual side than the buccal side. Although differences between mesial and distal thicknesses were not statistically significant.


CONCLUSIONS
Wall thickness varied greatly. The lingual surfaces of roots were larger. All roots had thin walls in the apical third.
crbellucci@tin.it
C
C
Bellucci
N
N
Perrini
D000704:Analysis of Variance; D001641:Bicuspid / Q000033:anatomy & histology; D003481:Cuspid / Q000033:anatomy & histology; D003739:Dental Cementum / Q000033:anatomy & histology*; D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D003804:Dentin / Q000033:anatomy & histology*; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology; D009811:Odontometry; D012016:Reference Values; D014092:Tooth Root / Q000033:anatomy & histology*