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Journal List > J Korean Assoc Oral Maxillofac Surg > v.37(2) > 1032455

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Bu, Kim, Kim, Park, Lee, Kim, and Myoung: Accuracy of simulation surgery of Le Fort I osteotomy using optoelectronic tracking navigation system
Original Article

J Korean Assoc Oral Maxillofac Surg 2011;37(2):114-121.

Published online: 10 January 2011

DOI: https://doi.org/10.5125/jkaoms.2011.37.2.114

Accuracy of simulation surgery of Le Fort I osteotomy using optoelectronic tracking navigation system

Yeon-Ji Bu1, Soung-Min Kim1, 2, 3, Ji-Youn Kim2, Jung-Min Park3, Jong-Ho Lee1, 2, 3, Myung-Jin Kim1, 2, 3, Hoon Myoung1, 2, 3

1Division of Dentistry, Seoul National University, Seoul, Korea

2Department of Oral & Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul, Korea

3Dental Research Institute, Seoul National University, Seoul, Korea

Myung-Jin Kim Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital 62-1, Changgyeonggungno, Jongno-gu, Seoul, 110-768, Korea TEL: +82-2-2072-2632 FAX: +82-2-766-4948 E mail: myungkim@snu.ac.kr

Received 9 December 2010       Revised 14 March 2011       Accepted 11 April 2011

Copyright © 2011 Korean Association of Oral and Maxillofacial Surgeons

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Introduction

The aim of this study was to demonstrate that the simulation surgery on rapid prototype (RP) model, which is based on the 3-dimensional computed tomography (3D CT) data taken before surgery, has the same accuracy as traditional orthograthic surgery with an intermediate splint, using an optoelectronic tracking navigation system.

Materials and Methods

Simulation surgery with the same treatment plan as the Le Fort I osteotomy on the patient was done on a RP model based on the 3D CT data of 12 patients who had undergone a Le Fort I osteotomy in the department of oral and maxillofacial surgery, Seoul National University Dental Hospital. The 12 distances between 4 points on the skull, such as both infraorbital foramen and both supraorbital foramen, and 3 points on maxilla, such as the contact point of both maxillary central incisors and mesiobuccal cuspal tip of both maxillary first molars, were tracked using an optoelectronic tracking navigation system. The distances before surgery were compared to evaluate the accuracy of the RP model and the distance changes of 3D CT image after surgery were compared with those of the RP model after simulation surgery.

Results

A paired t-test revealed a significant difference between the distances in the 3D CT image and RP model before surgery.(P<0.0001) On the other hand, Pearson's correlation coefficient, 0.995, revealed a significant positive correlation between the distances.(P<0.0001) There was a significant difference between the change in the distance of the 3D CT image and RP model in before and after surgery.(P<0.05) The Pearson's correlation coefficient was 0.13844, indicating positive correlation.(P<0.1)

Conclusion

Theses results suggest that the simulation surgery of a Le Fort I osteotomy using an optoelectronic tracking navigation system is relatively accurate in comparing the pre-, and post-operative 3D CT data. Furthermore, the application of an optoelectronic tracking navigation system may be a predictable and efficient method in Le Fort I orthognathic surgery.

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Keywords: Optoelectronic tracking navigation system, Le Fort I osteotomy, Simulation surgery, Rapid prototype (RP) model

References

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jkaoms-37-114f1.tif
Fig. 1.
Measuring the distance between 4 reference points and contact point of maxillary central incisors on a In2Vision 3-dimensional surgical navigation system.
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jkaoms-37-114f2.tif
Fig. 2.
Used tools in this study. A was the computer system displaying In2Vision system, B was the registration probe, C was the navigation probe, D was the infrared VICRA Polaris camera.
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jkaoms-37-114f3.tif
Fig. 3.
Preparation and measurement of rapid prototype model in this study. A. Microscrews were implanted in nasion, both supraorbital foramen, contact point of maxillary central incisors for the reproducible measurement. B. Gradation was drawn over the maxillary canine and first molar and SAS was implanted in mesiobuccal cusp tip of maxillary first molar. C. Measuring the vertical distance between left supraorbital foramen and mesiobuccal cusp tip of left maxillary first molar. (SAS: skeletal anchoring system)
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jkaoms-37-114f4.tif
Fig. 4.
Tracking the points by using of In2Vision 3 dimensional surgical navigation system and Polaris Vicra tracking device.
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jkaoms-37-114f5.tif
Fig. 5.
Measuring the distance between 4 reference points on skull and ICP after simulation surgery on RP model (ICP: interincisal contact point, RP: rapid prototyping)
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jkaoms-37-114f6.tif
Fig. 6.
RMSE analysis graph of measured distances between 3D CT image in X axis and RP model in Y axis before surgery.(mm) (RMSE: root mean square error, 3D CT: 3 dimensional computed tomography, RP: rapid prototyping)
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jkaoms-37-114f7.tif
Fig. 7.
RMSE analysis graph showing changes between before and after surgery in measured distances of 3D CT image in X axis and RP model in Y axis.(mm) (RMSE: root mean square error, 3D CT: 3 dimensional computed tomography, RP: rapid prototyping)
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Table 1.
The distance between 4 points on skull and 3 points on maxilla from 3D CT image before Le Fort I osteotomy (mm)
No. of patients RIF LIF RSF LSF
RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC
1 44.6 54.5 68.9 70.2 53.6 41.6 93.9 104.3 112 107.4 99.4 90.3
2 41.8 53 68 66.2 51.7 41.6 82.3 91.3 98 96.8 91.8 84
3 53.7 62.8 75.1 76.7 60.2 46.8 101 106.6 110.1 114.1 105.3 95.6
4 41 50.7 65.5 67.1 53.4 43.7 92.6 99 106 105 99.7 93.3
5 47.3 58.8 72.3 73.7 59.5 48.8 96.8 105.3 110.8 112.1 107.1 100.4
6 41.6 52.4 65.9 65.5 50.5 38.2 90.3 96.9 100.6 104.7 99.5 90.2
7 44.3 52.2 67 63.5 48.2 42.1 86.8 92.2 101.1 100.1 91.2 86.6
8 42.7 51.5 69.3 68.6 51.3 43 91.4 97.4 107.8 109.5 100.4 95.1
9 44.9 52.3 67.5 69.6 53.5 44 94.5 96.8 105.1 108.6 98.5 93.5
10 49.2 56.4 73.6 71.2 55.4 47.4 97.4 102.5 111 110.9 102.2 96.5
11 41.7 52.6 70.4 67 50.3 41.5 88.1 92.5 100.2 100.6 92.3 87.4
12 43.9 49.1 68.2 63.7 48.9 41.2 88.4 90.7 101.1 101.1 90.4 85.2

(3D CT: 3 dimensional computed tomography, RIF: right infraorbital foramen, LIF: left infraorbital foramen, RSF: right supraorbital foramen, LSF: left supraorbital foramen, RMBC: right mesiobuccal cuspal tip, ICP: interincisal contact point, LMBC: left mesiobuccal cuspal tip)

Table 2.
The distance between 4 points on skull and 3 points on maxilla from rapid prototyping (RP) model before simulation surgery (mm)
No. of patients RIF LIF RSF LSF
RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC
1 46.33 59.93 70.83 71.57 57.94 42.21 96.2 110.91 114.72 108.7 104.52 92.52
2 43.89 52.48 68.74 67.59 53.38 44.22 84.39 90.23 99.53 99.05 91.88 86.53
3 57.54 64.69 78.99 80.4 62.13 47.61 105.76 108.03 113.51 118.5 106.75 96.45
4 39.21 51.08 68.9 67.65 52.47 43.7 89.93 99.35 106.49 103.74 99.06 92.49
5 48.33 60.09 72.44 75.98 61.89 47.84 99.49 105.72 111.68 114.85 108.29 100.6
6 45.69 51.83 66.79 68.05 52.63 39.51 94.74 98.39 100.25 108.04 100.97 92.03
7 44.44 53.03 63.23 67.23 52.26 40.07 89.16 96.47 99.42 103.78 96.43 86.24
8 44.01 48.99 64.39 69.58 51.79 39.54 94.5 97.18 104.67 110.6 100.01 91.59
9 45.66 53.26 65.12 70.87 57.89 45.23 97.07 98.82 106.42 109.7 100.27 94.55
10 51.46 59.37 72.22 78.21 61.48 51.33 101.9 105.93 112.98 116.68 105.84 100.49
11 39.44 48.83 66.15 70.48 48.19 39.12 86.64 89.2 97.26 101.22 88.9 84.69
12 41.92 50.74 65.84 67.09 48.65 40.13 87.57 91.84 98.5 102.02 90.7 82.81

(RIF: right infraorbital foramen, LIF: left infraorbital foramen, RSF: right supraorbital foramen, LSF: left supraorbital foramen, RMBC: right mesiobuccal cuspal tip, ICP: interincisal contact point, LMBC: left mesiobuccal cuspal tip)

Table 3.
The difference of measured 12 distances between 3D CT image and RP model before surgery (mm)
No. of patients RIF LIF RSF LSF
RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC
1 0.8 3.2 2.9 0.5 2.8 3 −0.1 3.3 2.3 1.3 3.6 2.7
2 −0.6 −1.5 1.3 2.4 −1.2 1.6 0.1 0.2 2.9 0.3 −0.8 1.3
3 9.5 4.3 −0.6 6.6 3.4 1.9 8.9 4.4 −1.1 8.6 4 1.2
4 2.3 1 1.3 2.2 1.2 4.3 2.2 1.7 3.6 2.8 2.8 5.1
5 −1.2 2.2 2 1.8 3.5 1.9 −0.3 4.2 2.2 2.4 4.9 4.5
6 0.1 2.2 0.5 −1 0 −1.1 1.2 1.5 −0.7 2.2 1.4 −0.8
7 3.9 1.6 3.2 0.2 −1.9 2.5 2.8 0.6 3.6 2.9 −0.5 2.9
8 −1.7 −2.3 −0.3 0.5 −1.6 2 −1.7 −2.4 1.7 0.1 −1.5 2.6
9 3.2 −3.2 −2.2 2.2 −2.6 1.1 4.5 −3.1 0.7 4.3 −2.2 2.7
10 6.1 1.4 3.8 2 0.3 0.2 4.5 3.2 3.5 3 1.3 0.4
11 2.3 2.7 3.6 0.6 1.4 1.4 2.4 2.6 3 2.1 2.5 2.1
12 6.3 −2 1.1 2.8 −1.9 1.8 6.4 −0.8 2.5 4.2 −2.4 2.1

(3D CT: 3 dimensional computed tomography, RIF: right infraorbital foramen, LIF: left infraorbital foramen, RSF: right supraorbital foramen, LSF: left supraorbital foramen, RMBC: right mesiobuccal cuspal tip, ICP: interincisal contact point, LMBC: left mesiobuccal cuspal tip)

Table 4.
The distance between 4 points on skull and 3 points on maxilla from 3D CT image after Le Fort I osteotomy (mm)
No. of patients RIF LIF RSF LSF
RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC
1 43.8 51.3 66 69.7 50.8 38.6 94 101 109.7 106.1 95.8 87.6
2 42.4 54.5 66.7 63.8 52.9 40 82.2 91.1 95.1 96.5 92.6 82.7
3 44.2 58.5 75.7 70.1 56.8 44.9 92.1 102.2 111.2 105.5 101.3 94.4
4 38.7 49.7 64.2 64.9 52.2 39.4 90.4 97.3 102.4 102.2 96.9 88.2
5 48.5 56.6 70.3 71.9 56 46.9 97.1 101.1 108.6 109.7 102.2 95.9
6 41.5 50.2 65.4 66.5 50.5 39.3 89.1 95.4 101.3 102.5 98.1 91
7 40.4 50.6 63.8 63.3 50.1 39.6 84 91.6 97.5 97.2 91.7 83.7
8 44.4 53.8 69.6 68.1 52.9 41 93.1 99.8 106.1 109.4 101.9 92.5
9 41.7 55.5 69.7 67.4 56.1 42.9 90 99.9 104.4 104.3 100.7 90.8
10 43.1 55 69.8 69.2 55.1 47.2 92.9 99.3 107.5 107.9 100.9 96.1
11 39.4 49.9 66.8 66.4 48.9 40.1 85.7 89.9 97.2 98.5 89.8 85.3
12 37.6 51.1 67.1 60.9 50.8 39.4 82 91.5 98.6 96.9 92.8 83.1

(3D CT: 3 dimensional computed tomography, RIF: right infraorbital foramen, LIF: left infraorbital foramen, RSF: right supraorbital foramen, LSF: left supraorbital foramen, RMBC: right mesiobuccal cuspal tip, ICP: interincisal contact point, LMBC: left mesiobuccal cuspal tip) * Comparison with parameters in Table 1, P<0.05

Table 5.
The distance between 4 points on skull and 3 points on maxilla from RP model after simulation surgery of Le Fort I osteotomy (mm)
No. of patients RIF LIF RSF LSF
RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC
1 50.09 57.01 70.97 73.54 57.49 40.43 100.38 107.38 114.63 112.55 101.65 91.05
2 43.05 49.01 67.99 69.05 51.21 42.06 85.49 88.69 100.09 101.06 90.54 87.33
3 55.42 62.73 78.1 80.04 64.2 49.48 103.26 107.24 113.1 117.99 109.52 99.29
4 40.25 50.15 65.32 67.63 53.08 41.01 91.89 98.56 104.59 104.16 97.83 90.62
5 49.49 63.87 77.22 75.3 62.46 50.2 99.43 108.08 114.18 112.88 107.24 100.72
6 48.81 53.16 66.89 72.5 58.1 41.56 97.67 100.15 104.73 109.99 101.98 92
7 45.16 54.11 66.6 67.59 53.92 41.58 89.77 95.86 99.48 102.77 97.03 87.82
8 44.15 48.36 63.83 72.95 53.31 40.11 91.69 95.57 102.56 111.98 101.4 92.11
9 40.97 53.45 62.29 65.74 56.78 37.23 92.32 97.36 100.8 105.78 99.63 89.11
10 50.61 55.57 69.47 76.19 58.48 47.45 100.9 103.78 110.35 113.67 104.1 95.16
11 41.36 52.46 64.08 69.81 56.45 38.87 89.62 89.01 95.92 103.42 91.06 84.83
12 37.35 45.9 64.72 63.69 49.59 37.16 82.39 85.21 96.59 98.82 88.8 81.74

(RIF: right infraorbital foramen, LIF: left infraorbital foramen, RSF: right supraorbital foramen, LSF: left supraorbital foramen, RMBC: right mesiobuccal cuspal tip, ICP: interincisal contact point, LMBC: left mesiobuccal cuspal tip) * Comparison with parameters in Table 2, P<0.05

Table 6.
The difference of change in measured 12 distances of 3D CT image and RP model before and after surgery (mm)
No. of patients RIF LIF RSF LSF
RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC
RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC RMBC ICP LMBC  
1 4.56 0.28 3.04 2.47 2.35 1.22 4.08 −0.23 2.21 5.15 0.73 1.23
2 −1.44 −4.97 0.55 3.86 −3.37 −0.56 1.2 −1.34 3.46 2.31 −2.14 2.1
3 7.38 2.34 −1.49 6.24 5.47 3.77 6.4 3.61 −1.51 8.09 6.77 4.04
4 3.34 0.07 −2.28 2.18 1.81 1.61 4.16 0.91 1.7 3.22 1.57 3.23
5 −0.04 5.98 6.78 1.12 4.07 4.26 −0.36 6.56 4.7 0.43 3.85 4.62
6 3.22 3.53 0.6 3.45 5.47 0.95 4.13 3.26 3.78 4.15 2.41 −0.83
7 4.62 2.68 6.57 0.56 −0.24 4.01 3.41 −0.01 3.66 1.89 0.1 4.48
8 −1.56 −2.93 −0.86 3.87 −0.08 2.57 −4.51 −4.01 −0.41 1.48 −0.11 3.12
9 −1.49 −3.01 −5.03 −2.93 −3.71 −6.9 −0.25 −4.56 −4.92 0.38 −2.84 −2.74
10 5.25 −2.4 1.05 −0.02 −2.7 −3.68 3.5 1.05 0.87 −0.01 −0.44 −4.93
11 4.22 6.33 1.53 −0.07 9.66 1.15 5.38 2.41 1.66 4.3 4.66 2.24
12 1.73 −6.84 −0.02 −0.6 −0.96 −1.17 1.22 −7.43 0.59 1 −4.3 1.03

(3D CT: 3 dimensional computed tomography, RIF: right infraorbital foramen, LIF: left infraorbital foramen, RSF: right supraorbital foramen, LSF: left supraorbital foramen, RMBC: right mesiobuccal cuspal tip, ICP: interincisal contact point, LMBC: left mesiobuccal cuspal tip) * Comparison with parameters in Table 3, P<0.05

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