Evaluation of palatal bone thickness in adults with normal occlusion for orthodontic miniscrews placement / 中华口腔医学杂志
Chinese Journal of Stomatology
;
(12): 177-181, 2011.
Article
in Chinese
| WPRIM
| ID: wpr-339779
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the palatal bone thickness in adult with normal occlusion.</p><p><b>METHODS</b>The cone beam computerized tomography records of 32 adults with normal occlusion (16 males and 16 females), mean age (30.1 ± 6.5) years, were used to measure the bone thickness at midpalatal area and the right and left palatal sides. Coronal slices at 3 mm intervals were generated. Slice 1 was the coronal slice through the posterior border to the incisive foramen, while Slice 7 was the coronal slice 18 mm away from the incisive foramen. At each coronal slice, the midpalatal sites were Site M and the sites on the exterior margin of the hard palatal were Site D. Four equally divided parts on the line linking Site M to Site D were named Site A, B, C from the interior to the exterior respectively. Palatal bone thickness were measured at these sites.</p><p><b>RESULTS</b>Significant differences were noted from Slice 1 to Slice 7, the bone thickness of palate tended to decrease from the front to the back. The thickest site at hard palatal was 12.6 mm, locating at Site D of Slice 1, while the thinnest site was 2.7 mm, locating at Site B of Slice 7. The palatal bone thickness ranged from 10.5 mm (maximum) to 5.8 mm (minimum) at Slice 2 and Slice 3. No statistical significance was found between the left and right sides (P > 0.05).</p><p><b>CONCLUSIONS</b>The favorable sites for miniscrew placement were the anterior region of the hard palate in adult. The length of miniscrew ranged from 5 mm to 10 mm can be placed from 6 mm posterior to the incisive foramen.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Bone Screws
/
Diagnostic Imaging
/
Statistics, Nonparametric
/
Palate, Hard
/
Dental Occlusion
/
Orthodontic Anchorage Procedures
/
Cone-Beam Computed Tomography
Type of study:
Diagnostic study
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
Chinese
Journal:
Chinese Journal of Stomatology
Year:
2011
Type:
Article
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