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Evaluation of architectural changes in mandibular trabecular and cortical bone pattern after functional treatment

Open Access
|Nov 2022

Figures & Tables

Figure 1.

Steps of fractal dimension analysis. A. Cropped and duplicated region of interest. B. Gaussian blur. C. Subtracted blurred image from the original image. D. Addition of a gray value of 128 to each pixel location. E. Erosion. F. Dilatation. G. Inversion. H. Skeletonization.
Steps of fractal dimension analysis. A. Cropped and duplicated region of interest. B. Gaussian blur. C. Subtracted blurred image from the original image. D. Addition of a gray value of 128 to each pixel location. E. Erosion. F. Dilatation. G. Inversion. H. Skeletonization.

Figure 2.

Right side; selected ROI areas for fractal dimension analysis selection, Left side; presentation of cortical thickness measurement.
Right side; selected ROI areas for fractal dimension analysis selection, Left side; presentation of cortical thickness measurement.

Comparisons of T1–T2 (Pretreatment – Posttreatment) and C1–C2 (Precontrol-Postcontrol) with paired t-test_

T (n=30)C (n=12)
T1 (Mean±SD)T2 (Mean±SD) p valueC1 (Mean±SD)C2 (Mean±SD) p value
Processus condylaris (R)1.402 ± 0.1211.450 ± 0.098 0.033* 1.420 ± 0.1181.450 ± 0.1170.519
Antegonial notch (R)1.361 ± 0.1261.406 ± 0.1380.2281.409 ± 0.0981.421 ± 0.0830.762
Ramus mandible (R)1.364 ± 0.0981.370 ± 0.1410.8221.394 ± 0.1091.390 ± 0.1730.949
Cortical thickness of the mandible (R)3.620 ± 0.5893.807 ± 0.491 0.006** 3.167 ± 0.4053.292 ± 0.4340.063
Processus condylaris (L)1.400 ± 0.1051.460 ± 0.101 0.037* 1.421 ± 0.1301.448 ± 0.1650.601
Antegonial notch (L)1.359 ± 0.1131.377 ± 0.1150.5091.402 ± 0.0561.430 ± 0.1200.501
Ramus mandible (L)1.343 ± 0.1241.378 ± 0.1190.2731.394 ± 0.0911.401 ± 0.1600.877
Cortical thickness of the mandible (L)3.580 ± 0.5993.743 ± 0.517 0.021* 3.117 ± 0.5043.317 ± 0.488 0.046*

Fractal dimension analysis and cortical thickness measurement descriptive analysis in treatment and control groups_

TreatmentControl
Pre treatment (T1)Post treatment (T2)Pre control (C1)Post control (C2)
MeanSDMinMaxMeanSDMinMaxMeanSDMinMaxMeanSDMinMax
FD
 Processus condylaris1.40130.096611.141.541.45510.088541.171.561.42050.112191.211.651.44930.137071.181.66
 Antegonial notch1.36010.095131.081.501.39140.095351.211.531.40550.066331.301.501.42540.065921.291.52
 Ramus mandible1.35370.086151.111.481.37440.106031.141.531.39390.078471.261.491.39550.142971.171.67
Cortical thickness3.60000.561252.554.503.77500.478103.054.553.14170.386022.303.653.30420.435092.303.90

Comparisons of T1–T2 (Pretreatment – Posttreatment) and C1–C2 (Precontrol – Postcontrol) with independent t-test_

ΔT (Mean±SD)ΔC (Mean±SD) p value
Processus condylaris (R)0.048 ± 0.1180.030 ± 0.1550.677
Antegonial notch (R)0.045 ± 0.1980.012 ± 0.1350.606
Ramus mandible (R)0.006 ± 0.151−0.004 ± 0.1950.861
Cortical thickness of the mandible (R)0.187 ± 0.3430.125 ± 0.2090.566
Processus condylaris (L)0.059 ± 0.1490.028 ± 0.1790.56
Antegonial notch (L)0.018 ± 0.1480.028 ± 0.1390.845
Ramus mandible (L)0.035 ± 0.1720.007 ± 0.1490.621
Cortical thickness of the mandible (L)0.163 ± 0.3650.200 ± 0.3070.761
DOI: https://doi.org/10.2478/aoj-2022.0037 | Journal eISSN: 2207-7480 | Journal ISSN: 2207-7472
Language: English
Page range: 380 - 387
Submitted on: Nov 1, 2021
Accepted on: Sep 1, 2021
Published on: Nov 4, 2022
Published by: Australian Society of Orthodontists Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2022 Barcın Eroz Dilaver, Dilara Nil Günaçar, Ali Kiki, published by Australian Society of Orthodontists Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.