Comparison of the Buccal Cortical Bone Thickness in Growing Thai Patients with Unilateral Cleft Lip and Palate Using Cone-Beam Computed Tomography
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Abstract
Objective: The purpose of this study was to compare the buccal cortical bone thickness at the infrazygomatic (IZ) crest site between non-cleft and cleft sides in growing Thai patients with unilateral cleft lip and palate (UCLP), using cone-beam computed tomography (CBCT).
Materials and Methods: Pre orthodontic treatment CBCT images of 40 IZ crest sites obtained from 20 non-syndromic Thai patients with UCLP were measured. Using the DentiPlan professional V. 3.0 (NECTEC, Thailand) viewer program, five cutting lines of 1.2 mm vertical interval from 6.0 mm to 10.8 mm from the buccal cemento-enamel junction (CEJ) of the maxillary first molar to the root apex were created for the measurements. The paired t-test was used to assess the differences in buccal cortical bone thickness between non-cleft and cleft sides.
Results: The buccal cortical bone thickness ranged from 1.08+0.30 mm to 2.16+1.17 mm on the non-cleft side, and from 1.19+0.3 mm to 3.36+2.80 mm on the cleft side. The greatest values were along the distobuccal (DB) root of the maxillary first molar, increasing from the buccal CEJ to the apex. Statistically significant differences in the measurements between the non-cleft and cleft sides were discovered at p<0.05.
Conclusions: All the buccal cortical bone thickness measurements were greater than 1.0 mm on both non-cleft and cleft sides. The values increased from the CEJ level towards the apical area. Moreover, most measurements on the cleft side were significantly greater than those non-cleft side.
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References
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