The 3-D study of the human maxillary central incisor crown in Xi'an area
ZHANG Da-peng
WANG Shu-ming
ZHENG Ya-qi
SUN Guan-yang
WU Guo-feng
Abstract：AIM:To establish a 3-D structure model of human maxillary central incisor crown and to inves-tigate its anatomical parameters.METHODS:30 human maxillary central incisors from Xi'an area were elected at ran-dom,which had normal crown shape and no severe abrasion.All the teeth were scanned by Micro CT,and then recon-structed into the 3-D models,each 3-D model included 3 sub-models of the enamel cap,dentin core and pulp cham-ber.The reverse engineering software of Mimics and Geomagic Studio was applied to measure the thickness of different sites of sub-models.RESULTS:The fine 3-Dmodel of human maxillary central incisor crowns was acquired.The thickness(mm)of the enamel cap and dentin core were as below:labial enamel,0.47 ±0.12-1.08 ±0.19;lingual en-amel,0.39 ±0.07-0.71 ±0.15;labial dentin,0.46 ±0.09 -2.17 ±0.48;lingual dentin,0.33 ±0.06 -2.82 ± 0.36,P"0.05.The distances(mm)between the pulp chamber and enamel surface were as following:from mesial medullary angle to incisal edge,4.24 ±1.04;distal medullary angle to incisal,4.71 ±0.98;mesial medullary angle to mesial adjacent surface,2.09 ±0.26;distal medullary angle to distal adjacent surface,2.53 ±0.30,P"0.05. CONCLUSION:This study proved the obvious variances in the thickness of enamel cap and dentin core in different sites of the human maxillary central incisor crowns in Xi'an area.
Keywords：maxillary central incisorcrownthree-dimensional structure
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 229-233 )