Table 1. Indications for mandibular reconstruction
Indication No (%)
SCC ORN
Unsuccessful orthognathic surgery Total
13 (65.0) 6 (30.0) 1 (5.0) 20 SCC, squamous cell carcinoma; ORN, osteoradionecrosis.
Table 2. Patient and tumor characteristics
Characteristic No (%)
Patients 20
Gender
Male 11 (55.0)
Female 9 (45.0)
Age
Mean 61.3y
Range 47-74y
Boyd Classification of Defect
H 1 (5.0)
C 1 (5.0)
L 12 (60.0)
LC 2 (10.0)
LCL 4 (20.0)
Active malignancy 14 (70.0)
Stage
I 1 (6.3)
II 2 (12.5)
III 1 (6.3)
IV 12 (75.0)
ASA class (mean) 2.75
H, defect involving a lateral mandibular segment (condyle included); L, defect involving a lateral mandibular segment (condyle excluded); C, an anterior mandibular defect between the incisor foramina; ASA, American Society of Anesthesiologists
Table 3. Measured differences in superior and inferior fibular segment borders between the virtual plan and the surgical outcome
patient fibular segment
* Ps (mm) Ss
(mm) superior border
difference (mm) Pi (mm) Si (mm) inferior border difference (mm)
1 1 46.45 50.03 3.58 49.00 54.45 5.45
2 19.47 14.09 -5.38 20.22 17.73 -2.49
3 4.05 12.64 8.59 12.33 11.85 -0.48
2 1 27.38 27.57 0.19 34.75 34.22 -0.53
2 55.98 54.60 -1.38 47.82 50.88 3.06
3 1 48.31 46.26 -2.05 50.57 51.24 0.67
2 29.33 25.26 -4.07 34.66 34.81 0.15
4 1 56.67 54.62 -2.05 61.11 57.71 -3.40
5 1 63.05 57.61 -5.44 61.86 60.87 -0.99
2 34.25 33.37 -0.88 33.32 30.92 -2.40
6 1 27.72 39.92 12.20 28.45 42.03 13.58
2 27.57 26.12 -1.45 28.75 27.70 -1.05
3 27.92 32.86 4.94 29.86 39.35 9.49
7 1 48.78 48.98 0.20 47.91 48.32 0.41
2 28.69 27.98 -0.71 33.78 33.21 -0.57
43.17 44.47 1.30 47.48 46.50 -0.98
2 49.09 47.10 -1.99 56.00 50.99 -5.01
3 20.57 22.96 2.39 25.03 26.29 1.26
9 1 42.03 42.82 0.79 44.21 43.20 -1.01
2 24.88 22.15 -2.73 31.47 27.49 -3.98
10 1 55.37 52.14 -3.23 61.36 58.44 -2.92
2 33.41 24.75 -8.66 34.83 30.57 -4.26
3 47.61 40.46 -7.15 46.69 42.51 -4.18
11 1 65.82 61.66 -4.16 58.51 58.86 0.35
2 21.06 23.78 2.72 26.94 24.80 -2.14
12 1 48.40 48.05 -0.35 55.40 54.07 -1.33
2 52.91 52.98 0.07 61.20 59.52 -1.68
13 1 57.60 50.92 -6.68 50.25 45.13 -5.12
14 1 27.63 27.42 -0.21 28.67 29.37 0.70
2 35.23 39.62 4.39 32.83 36.57 3.74
15 1 69.26 60.85 -8.41 63.47 58.10 -5.37
16 1 62.65 58.80 -3.85 58.42 55.48 -2.94
17 1 29.98 25.60 -4.38 31.84 26.33 -5.51
2 29.21 31.68 2.47 33.45 36.36 2.91
18 1 33.08 32.45 -0.63 33.08 34.14 1.06
2 47.81 46.02 -1.79 50.86 50.64 -0.22
19 1 29.48 28.47 -1.01 28.25 31.06 2.81
2 24.63 27.30 2.67 28.91 26.76 -2.15
3 28.79 30.17 1.38 29.02 31.11 2.09
20 1 47.07 47.05 -0.02 52.77 53.21 0.44
P, planned; S, after surgery; s, superior border; i, inferior border
*The segments were numbered 1 to 3, from the patient’s right side to the patient’s left side.
Positive values denote a larger segment than planned; negative values denote a smaller segment than planned
Table 4. Intercoronoid (IC) distances evaluated in preoperative virtual planning (PIC) and after surgery (SIC)
patient PIC (mm) SIC (mm) IC difference*
(mm)
1 107.01 105.84 -1.17
2 86.27 91.7 5.43
3 97.89 103.52 5.63
4 87.17 84.67 -2.5
5 106.33 103.64 -2.69
6 93.68 87.57 -6.11
7 85.92 85.01 -0.91
10 91.12 87.64 -3.48
19 85.97 81.8 -4.17
Absolute mean difference 3.57
*Positive and negative values indicate larger and smaller ICs, respectively, compared to the planned distance.
