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

Barcın Eroz Dilaver
Barcın Eroz Dilaver
, 
Dilara Nil Günaçar
Dilara Nil Günaçar
 et 
Ali Kiki
Ali Kiki
   | 04 nov. 2022
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Article Category: research-article
Publié en ligne: 04 nov. 2022
Pages: 380 - 387
Reçu: 01 nov. 2021
Accepté: 01 sept. 2021
DOI: https://doi.org/10.2478/aoj-2022.0037
© 2022 Barcın Eroz Dilaver et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

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 value C1 (Mean±SD) C2 (Mean±SD) p value
Processus condylaris (R) 1.402 ± 0.121 1.450 ± 0.098 0.033* 1.420 ± 0.118 1.450 ± 0.117 0.519
Antegonial notch (R) 1.361 ± 0.126 1.406 ± 0.138 0.228 1.409 ± 0.098 1.421 ± 0.083 0.762
Ramus mandible (R) 1.364 ± 0.098 1.370 ± 0.141 0.822 1.394 ± 0.109 1.390 ± 0.173 0.949
Cortical thickness of the mandible (R) 3.620 ± 0.589 3.807 ± 0.491 0.006** 3.167 ± 0.405 3.292 ± 0.434 0.063
Processus condylaris (L) 1.400 ± 0.105 1.460 ± 0.101 0.037* 1.421 ± 0.130 1.448 ± 0.165 0.601
Antegonial notch (L) 1.359 ± 0.113 1.377 ± 0.115 0.509 1.402 ± 0.056 1.430 ± 0.120 0.501
Ramus mandible (L) 1.343 ± 0.124 1.378 ± 0.119 0.273 1.394 ± 0.091 1.401 ± 0.160 0.877
Cortical thickness of the mandible (L) 3.580 ± 0.599 3.743 ± 0.517 0.021* 3.117 ± 0.504 3.317 ± 0.488 0.046*

Fractal dimension analysis and cortical thickness measurement descriptive analysis in treatment and control groups.

Treatment Control
Pre treatment (T1) Post treatment (T2) Pre control (C1) Post control (C2)
Mean SD Min Max Mean SD Min Max Mean SD Min Max Mean SD Min Max
FD
 Processus condylaris 1.4013 0.09661 1.14 1.54 1.4551 0.08854 1.17 1.56 1.4205 0.11219 1.21 1.65 1.4493 0.13707 1.18 1.66
 Antegonial notch 1.3601 0.09513 1.08 1.50 1.3914 0.09535 1.21 1.53 1.4055 0.06633 1.30 1.50 1.4254 0.06592 1.29 1.52
 Ramus mandible 1.3537 0.08615 1.11 1.48 1.3744 0.10603 1.14 1.53 1.3939 0.07847 1.26 1.49 1.3955 0.14297 1.17 1.67
Cortical thickness 3.6000 0.56125 2.55 4.50 3.7750 0.47810 3.05 4.55 3.1417 0.38602 2.30 3.65 3.3042 0.43509 2.30 3.90

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 ± 0.118 0.030 ± 0.155 0.677
Antegonial notch (R) 0.045 ± 0.198 0.012 ± 0.135 0.606
Ramus mandible (R) 0.006 ± 0.151 −0.004 ± 0.195 0.861
Cortical thickness of the mandible (R) 0.187 ± 0.343 0.125 ± 0.209 0.566
Processus condylaris (L) 0.059 ± 0.149 0.028 ± 0.179 0.56
Antegonial notch (L) 0.018 ± 0.148 0.028 ± 0.139 0.845
Ramus mandible (L) 0.035 ± 0.172 0.007 ± 0.149 0.621
Cortical thickness of the mandible (L) 0.163 ± 0.365 0.200 ± 0.307 0.761
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