[Measurement of facial bone wall thickness of maxillary anterior teeth and premolars on cone beam computed tomography images].
OBJECTIVE
To measure the thickness of facial bone wall of maxillary anterior teeth and premolars based on cone beam computed tomography (CBCT) images.


METHODS
CBCT images from 118 patients were collected from the Affiliated Stomatology Hospital of Zhejiang University. The thickness perpendicular to the long axis of facial bone wall was measured at two locations: 4 mm apical to the cementoenamel junction (point 1) and the middle of the root (point 2).


RESULTS
The thickness of the facial bone walls of central incisors, lateral incisors and canines ranged from 0.5 to 1.5 mm. A thin facial bone wall (<1.0 mm) was quite frequent in central incisors (44.1% at point 1, 56.8% at point 2), lateral incisors (65.2% at point 1, 89.8% at point 2) and canines (45.8% at point 1, 61.0% at point 2). In contrast, the majority of examined first premolars (77.1% at point 1, 68.7% at point 2) and second premolars (94.1% at point 1, 94.1% at point 2) exhibited a thick facial bone wall (>1.0 mm).


CONCLUSIONS
A thin facial bone wall of teeth in the anterior maxilla is common. Radiographic analysis of facial bone wall using CBCT is recommended for selection of appropriate treatment approach.
The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou 310006, China.
Jian-wei
JW
Shen
Fu-ming
FM
He
Qiao-hong
QH
Jiang
Hai-qin
HQ
Shan
D000328:Adult; D001641:Bicuspid / Q000000981:diagnostic imaging*; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D007180:Incisor / Q000000981:diagnostic imaging*; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging*; D055815:Young Adult