Abstract
The purpose of this study was to evaluate the bone thickness of the nasomaxillary
and zygomaticomaxillary buttresses to identify the most favourable region for the
installation of miniplates. Bilateral tomographic images of 103 individuals were evaluated,
for a total of 206 nasomaxillary and zygomaticomaxillary buttresses. Measurements
of bone thickness were performed in the parasagittal reconstructions along three vertical
lines on the nasomaxillary buttress (21 measurement points) and four vertical lines
on the zygomaticomaxillary buttress (28 measurement points). The vertical line measurements
for each buttress were compared using the Kruskal–Wallis test. Spearman’s correlation
coefficient was used to determine the correlation between the thicknesses obtained
and patient sex and side (right/left). The level of significance adopted was 5%. The
nasomaxillary and zygomaticomaxillary buttresses presented statistical differences
in thickness at their respective points (P = 0.001). The analysis of the nasomaxillary buttress showed that the thicker bone for
the installation of miniplates follows the long axis of the upper canine at a distance
of 3 mm from the root apex. For the zygomaticomaxillary buttress, thicker bone to install
miniplates was found distal to the distobuccal root of the first molar, at a distance
of 3.5 mm from the limit of the infraorbital foramen.
Key words
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Article info
Publication history
Published online: December 03, 2020
Accepted:
November 5,
2020
Identification
Copyright
© 2020 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.
