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Table. 8.

Comparison of pre- and postsurgical differences (T2–T1) in extra-alveolar bone density (HU) between groups of patients who had undergone genioplasty and those who had not

Site With G (n = 6) Without G (n = 4) p-value
Menton −75.3 ± 67.5 −24.5 ± 17.2 0.230
Top of head −97.0 ± 99.6 12.0 ± 36.6 0.037*
Condyle Medial cortex −37.5 ± 55.9 36.0 ± 115.4 0.352
Lateral cortex −56.5 ± 49.8 8.5 ± 149.7 0.476
Can −58.3 ± 39.1 −5.8 ± 21.2 0.024*
Vertebrae ASC 5.8 ± 84.2 45.2 ± 189.5 0.710
PIC −65.5 ± 72.8 12.7 ± 155.5 0.382
DCan −83.5 ± 49.7 −34.7 ± 48.5 0.114

Values are presented as mean ± standard deviation.

HU, Hounsfield units; T1, before surgery; T2, after surgery; With G, patients with genioplasty; Without G, patients without genioplasty; Can, cancellous bone; ASC, anterosuperior cortical bone; PIC, posteroinferior cortical bone; DCan, diagonal cancellous bone.

*p < 0.05.

The independent sample t-tests or Mann–Whitney tests were performed.

Korean J Orthod 2020;50:157~169 https://doi.org/10.4041/kjod.2020.50.3.157
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