Hard and Soft Tissue Asymmetry in Patients with Skeletal Class III Malocclusion: A Cone-Beam Computed Tomography Study
Abstract
:1. Introduction
2. Materials and Methods
2.1. Sample Size Calculation
2.2. Patient Inclusion
2.3. Data Acquisition and Assessment
2.4. Statistical Analysis
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Description | |
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Points | |
H0 | Point corresponding to the Gonion point on the deviated side. |
H1 | Point located on the external cortical bone of the mandible, on the same coronal slice as H0, and 10 mm above H0 on the axial slice. |
H2 | Point located on the external cortical bone of the mandible, on the same coronal slice as H0, and 10 mm above H1 on the axial slice. |
H3 | Point located on the external cortical bone of the mandible, on the same coronal slice as H0, and 10 mm above H2 on the axial slice. |
H4 | Point located on the external cortical bone of the mandible, on the same axial slice as H0, and 10 mm anterior to H0 on the coronal slice. |
H5 | Point located on the external cortical bone of the mandible, on the same coronal slice as H4, and 10 mm above H4 on the axial slice. |
H6 | Point located on the external cortical bone of the mandible, on the same coronal slice as H4, and 10 mm above H5 on the axial slice. |
H7 | Point located on the external cortical bone of the mandible, on the same coronal slice as H4, and 10 mm above H6 on the axial slice. |
H8 | Point located on the external cortical bone of the mandible, on the same axial slice as H4, and 10 mm anterior to H4 on the coronal slice. |
H9 | Point located on the external cortical bone of the mandible, on the same coronal slice as H8, and 10 mm above H8 on the axial slice. |
H10 | Point located on the external cortical bone of the mandible, on the same coronal slice as H8, and 10 mm above H9 on the axial slice. |
S0–S10 | Extension of hard tissue point (H0 to H10) perpendicularly from the MSP to the outermost soft tissue contour of the face. |
H’0–H’10 | Hard tissue points on the non-deviated side of the mandible, corresponding to H0 to H10. |
S’0–S’10 | Soft tissue points on the non-deviated side, corresponding to S0 to S10. |
Measurements | |
Hard tissue prominence (mm) | The perpendicular distance from a hard tissue point to the MSP. |
Soft tissue prominence (mm) | The perpendicular distance from a soft tissue point to the MSP. |
Soft tissue thickness (mm) | The distance between a hard tissue point and a soft tissue point perpendicular to the MSP. |
Menton deviation (mm) | The perpendicular distance from the menton point to the mid-sagittal plane. |
Symmetric Group | Asymmetric Group | |
---|---|---|
Variables | ||
Patient (n) | 25 | 25 |
Gender (Male/Female) | 12 M, 13 F | 14 M, 11 F |
Age (year), mean ± SD | 23.65 ± 5.12 | 25.18 ± 4.77 |
menton deviation (mm), mean ± SD | 0.87 ± 0.67 | 4.26 ± 1.69 |
Side of menton deviation (n) | 13 L, 12 R | 15 L, 10 R |
Symmetric Group (n = 25) | Asymmetric Group (n = 25) | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Variables | Deviated Side | SD | Non-Deviated Side | SD | Mean Difference | p Value # | Deviated Side | SD | Non-Deviated Side | SD | Mean Difference | p Value # |
Hard tissue prominence (mm) | ||||||||||||
H0/H’0 | 48.94 | 4.57 | 48.95 | 2.54 | −0.02 | 0.985 | 52.08 | 3.15 | 48.51 | 3.89 | 3.57 | 0.002 * |
H1/H’1 | 48.68 | 3.63 | 49.31 | 2.42 | −0.63 | 0.492 | 51.21 | 3.22 | 48.94 | 3.58 | 2.27 | 0.054 |
H2/H’2 | 50.08 | 3.53 | 50.52 | 2.96 | −0.43 | 0.670 | 52.29 | 3.01 | 50.76 | 3.46 | 1.53 | 0.175 |
H3/H’3 | 51.65 | 3.64 | 52.53 | 3.27 | −0.88 | 0.388 | 53.31 | 2.85 | 52.25 | 2.89 | 1.06 | 0.311 |
H4/H’4 | 47.06 | 3.45 | 46.87 | 2.39 | 0.19 | 0.843 | 50.40 | 2.93 | 46.70 | 3.20 | 3.70 | 0.002 * |
H5/H’5 | 47.88 | 3.42 | 47.74 | 2.82 | 0.14 | 0.880 | 50.78 | 2.89 | 47.30 | 3.17 | 3.49 | 0.002 * |
H6/H’6 | 48.96 | 3.56 | 48.71 | 3.50 | 0.25 | 0.798 | 51.39 | 3.10 | 48.99 | 2.91 | 2.40 | 0.027 * |
H7/H’7 | 49.53 | 4.11 | 49.47 | 4.03 | 0.07 | 0.947 | 51.42 | 2.98 | 49.80 | 2.41 | 1.62 | 0.097 |
H8/H’8 | 41.56 | 10.87 | 44.50 | 2.21 | −2.94 | 0.199 | 47.96 | 3.36 | 43.70 | 2.54 | 4.26 | <0.001 * |
H9/H’9 | 44.77 | 3.52 | 44.60 | 2.83 | 0.17 | 0.849 | 47.76 | 3.24 | 44.07 | 2.78 | 3.69 | 0.001 * |
H10/H’10 | 45.55 | 3.58 | 45.29 | 3.38 | 0.26 | 0.777 | 47.52 | 3.54 | 44.85 | 2.60 | 2.67 | 0.011 * |
Soft tissue prominence (mm) | ||||||||||||
S0/S’0 | 60.35 | 4.26 | 59.81 | 4.10 | 0.54 | 0.615 | 61.50 | 3.25 | 58.33 | 3.71 | 3.17 | 0.006 * |
S1/S’1 | 64.12 | 3.80 | 63.88 | 4.04 | 0.23 | 0.781 | 65.26 | 3.16 | 62.79 | 3.71 | 2.46 | 0.028 * |
S2/S’2 | 67.20 | 3.46 | 66.85 | 4.37 | 0.35 | 0.700 | 68.44 | 3.62 | 66.37 | 3.62 | 2.07 | 0.062 |
S3/S’3 | 69.25 | 2.88 | 69.21 | 4.49 | 0.04 | 0.965 | 70.09 | 3.80 | 68.86 | 3.85 | 1.22 | 0.273 |
S4/S’4 | 62.15 | 3.46 | 61.72 | 3.92 | 0.43 | 0.625 | 63.68 | 3.35 | 60.13 | 3.06 | 3.56 | 0.001 * |
S5/S’5 | 65.94 | 3.15 | 65.23 | 4.02 | 0.70 | 0.387 | 66.89 | 3.17 | 64.14 | 3.05 | 2.75 | 0.004 * |
S6/S’6 | 68.22 | 3.56 | 67.79 | 4.14 | 0.44 | 0.555 | 69.07 | 3.44 | 67.05 | 3.23 | 2.02 | 0.039 * |
S7/S’7 | 69.67 | 3.42 | 69.82 | 4.71 | −0.15 | 0.853 | 70.16 | 3.33 | 69.17 | 3.31 | 0.99 | 0.297 |
S8/S’8 | 62.38 | 3.67 | 61.62 | 4.22 | 0.76 | 0.397 | 63.66 | 4.13 | 59.37 | 2.94 | 4.29 | <0.001 * |
S9/S’9 | 65.20 | 3.25 | 64.91 | 4.28 | 0.29 | 0.711 | 66.33 | 3.73 | 63.60 | 3.27 | 2.73 | 0.005 * |
S10/S’10 | 67.85 | 3.03 | 67.40 | 4.56 | 0.44 | 0.555 | 68.32 | 3.65 | 66.32 | 3.42 | 2.00 | 0.045 * |
Soft tissue thickness (mm) | ||||||||||||
ST0/ST’0 | 11.41 | 2.96 | 10.86 | 3.36 | 0.55 | 0.114 | 9.42 | 1.99 | 9.82 | 2.89 | −0.40 | 0.279 |
ST1/ST’1 | 15.44 | 3.00 | 14.57 | 2.77 | 0.87 | 0.077 | 14.05 | 1.92 | 13.86 | 2.79 | 0.19 | 0.577 |
ST2/ST’2 | 17.12 | 2.45 | 16.34 | 2.59 | 0.78 | 0.131 | 16.15 | 2.12 | 15.61 | 2.69 | 0.54 | 0.052 |
ST3/ST’3 | 17.60 | 2.39 | 16.68 | 2.32 | 0.92 | 0.058 | 16.78 | 2.39 | 16.61 | 3.23 | 0.17 | 0.647 |
ST4/ST’4 | 15.10 | 2.46 | 14.85 | 2.35 | 0.25 | 0.301 | 13.29 | 1.88 | 13.43 | 2.77 | −0.15 | 0.725 |
ST5/ST’5 | 18.06 | 2.26 | 17.50 | 1.84 | 0.56 | 0.124 | 16.11 | 2.21 | 16.84 | 2.99 | −0.74 | 0.116 |
ST6/ST’6 | 19.26 | 2.26 | 19.08 | 1.68 | 0.19 | 0.711 | 17.68 | 2.48 | 18.06 | 3.11 | −0.38 | 0.364 |
ST7/ST’7 | 20.14 | 2.31 | 20.36 | 1.86 | −0.22 | 0.619 | 18.74 | 2.75 | 19.37 | 3.10 | −0.62 | 0.162 |
ST8/ST’8 | 20.82 | 11.84 | 17.12 | 2.64 | 3.70 | 0.123 | 15.70 | 2.03 | 15.67 | 2.64 | 0.03 | 0.919 |
ST9/ST’9 | 20.43 | 2.87 | 20.32 | 2.07 | 0.12 | 0.735 | 18.56 | 2.38 | 19.52 | 2.98 | −0.96 | 0.011 * |
ST10/ST’10 | 22.29 | 2.48 | 22.11 | 1.96 | 0.18 | 0.547 | 20.80 | 2.73 | 21.47 | 3.08 | −0.67 | 0.159 |
Symmetric Group (n = 25) | Asymmetric Group (n = 25) | |||
---|---|---|---|---|
Variables | Correlation Coefficient | p Value | Correlation Coefficient | p Value |
Hard tissue difference | ||||
H0/H’0 | 0.166 | 0.427 | −0.027 | 0.897 |
H1/H’1 | 0.135 | 0.519 | −0.043 | 0.838 |
H2/H’2 | 0.146 | 0.485 | −0.157 | 0.452 |
H3/H’3 | 0.023 | 0.915 | −0.180 | 0.388 |
H4/H’4 | 0.224 | 0.281 | 0.187 | 0.371 |
H5/H’5 | 0.183 | 0.382 | 0.215 | 0.302 |
H6/H’6 | 0.094 | 0.655 | 0.047 | 0.824 |
H7/H’7 | 0.125 | 0.551 | −0.007 | 0.972 |
H8/H’8 | 0.356 | 0.062 | 0.451 | 0.024 * |
H9/H’9 | 0.184 | 0.379 | 0.271 | 0.190 |
H10/H’10 | 0.221 | 0.288 | 0.173 | 0.409 |
Soft tissue difference | ||||
S0/S’0 | 0.250 | 0.228 | 0.152 | 0.468 |
S1/S’1 | 0.299 | 0.147 | −0.017 | 0.937 |
S2/S’2 | 0.204 | 0.329 | −0.122 | 0.562 |
S3/S’3 | 0.187 | 0.371 | −0.142 | 0.500 |
S4/S’4 | 0.245 | 0.238 | 0.323 | 0.116 |
S5/S’5 | 0.227 | 0.276 | 0.038 | 0.856 |
S6/S’6 | 0.182 | 0.383 | −0.081 | 0.701 |
S7/S’7 | 0.185 | 0.375 | −0.195 | 0.351 |
S8/S’8 | 0.269 | 0.194 | 0.412 | 0.041 * |
S9/S’9 | 0.348 | 0.088 | 0.064 | 0.759 |
S10/S’10 | 0.266 | 0.199 | −0.078 | 0.710 |
Soft tissue thickness difference | ||||
ST0/ST’0 | 0.342 | 0.095 | 0.252 | 0.108 |
ST1/ST’1 | 0.377 | 0.063 | 0.092 | 0.661 |
ST2/ST’2 | 0.067 | 0.749 | 0.182 | 0.384 |
ST3/ST’3 | 0.305 | 0.139 | 0.084 | 0.690 |
ST4/ST’4 | 0.028 | 0.895 | 0.244 | 0.240 |
ST5/ST’5 | 0.026 | 0.904 | −0.416 | 0.038 * |
ST6/ST’6 | 0.085 | 0.685 | −0.298 | 0.148 |
ST7/ST’7 | 0.048 | 0.821 | −0.303 | 0.146 |
ST8/ST’8 | −0.337 | 0.100 | −0.252 | 0.225 |
ST9/ST’9 | 0.303 | 0.141 | −0.575 | 0.003 * |
ST10/ST’10 | −0.023 | 0.912 | −0.326 | 0.117 |
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Tam, T.K.M.; Guo, R.; Liu, H.; Lin, Y. Hard and Soft Tissue Asymmetry in Patients with Skeletal Class III Malocclusion: A Cone-Beam Computed Tomography Study. Diagnostics 2023, 13, 869. https://doi.org/10.3390/diagnostics13050869
Tam TKM, Guo R, Liu H, Lin Y. Hard and Soft Tissue Asymmetry in Patients with Skeletal Class III Malocclusion: A Cone-Beam Computed Tomography Study. Diagnostics. 2023; 13(5):869. https://doi.org/10.3390/diagnostics13050869
Chicago/Turabian StyleTam, Tim King Man, Runzhi Guo, Hao Liu, and Yifan Lin. 2023. "Hard and Soft Tissue Asymmetry in Patients with Skeletal Class III Malocclusion: A Cone-Beam Computed Tomography Study" Diagnostics 13, no. 5: 869. https://doi.org/10.3390/diagnostics13050869
APA StyleTam, T. K. M., Guo, R., Liu, H., & Lin, Y. (2023). Hard and Soft Tissue Asymmetry in Patients with Skeletal Class III Malocclusion: A Cone-Beam Computed Tomography Study. Diagnostics, 13(5), 869. https://doi.org/10.3390/diagnostics13050869