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Dentoskeletal parameters related to visual perception of facial asymmetry in patients with skeletal class III malocclusion after orthognathic surgery 

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Presentation on theme: "Dentoskeletal parameters related to visual perception of facial asymmetry in patients with skeletal class III malocclusion after orthognathic surgery "— Presentation transcript:

1 Dentoskeletal parameters related to visual perception of facial asymmetry in patients with skeletal class III malocclusion after orthognathic surgery  C.-W. Lin, Y.-C. Wang, Y.-H. Chen, E.W.-C. Ko  International Journal of Oral and Maxillofacial Surgery  Volume 47, Issue 1, Pages (January 2018) DOI: /j.ijom Copyright © 2017 International Association of Oral and Maxillofacial Surgeons Terms and Conditions

2 Fig. 1 Three reference planes. The reference planes were determined by connecting the landmarks. The Frankfurt horizontal plane (FH plane) was set as the horizontal reference plane, defined as the plane passing through the bilateral orbitale (Or) and the midpoint of the bilateral porion (Po). The midsagittal plane (MSP) was the plane perpendicular to the FH plane and passing through the nasion (Na) and basion (Ba). The coronal reference plane (CP) was perpendicular to the FH plane and MSP and passed through the basion (Ba). International Journal of Oral and Maxillofacial Surgery  , 48-56DOI: ( /j.ijom ) Copyright © 2017 International Association of Oral and Maxillofacial Surgeons Terms and Conditions

3 Fig. 2 Measurements in frontal view.
(1) ANS to MSP; (B) A point to MSP; (3) U1 to MSP; (4) UIA to MSP; (5) U3 to FH plane; (6) U6 to FH plane; (7) L1 to MSP; (8) B point to MSP; (9) Gn to MSP; (10) Me to MSP. International Journal of Oral and Maxillofacial Surgery  , 48-56DOI: ( /j.ijom ) Copyright © 2017 International Association of Oral and Maxillofacial Surgeons Terms and Conditions

4 Fig. 3 Mandibular measurements in isometric view.
(11) Ramus height; (12) body length; (13) gonial angle; (14) L4 Md height; (15) L6 Md height; (16) condylar axis to CP. International Journal of Oral and Maxillofacial Surgery  , 48-56DOI: ( /j.ijom ) Copyright © 2017 International Association of Oral and Maxillofacial Surgeons Terms and Conditions

5 Fig. 4 Mandibular measurements in frontal view.
(17) Condylar axis to MSP; (18) Co to MSP; (19) Go to MSP; (20) ramus axis to MSP; (21) Md axis to MSP. International Journal of Oral and Maxillofacial Surgery  , 48-56DOI: ( /j.ijom ) Copyright © 2017 International Association of Oral and Maxillofacial Surgeons Terms and Conditions

6 Fig. 5 Mandibular measurements in frontal view.
(22) Co to FH plane; (23) Go to FH plane; (24) Condyle axis to FH plane; (25) AntMe to FH plane. International Journal of Oral and Maxillofacial Surgery  , 48-56DOI: ( /j.ijom ) Copyright © 2017 International Association of Oral and Maxillofacial Surgeons Terms and Conditions

7 Fig. 6 Mandibular measurements in sagittal view.
(26) Co to CP; (27) Go to CP; (28) ramus axis to CP. International Journal of Oral and Maxillofacial Surgery  , 48-56DOI: ( /j.ijom ) Copyright © 2017 International Association of Oral and Maxillofacial Surgeons Terms and Conditions

8 Fig. 7 Mandibular measurements in submental view. (29) MdBa to MdISP.
International Journal of Oral and Maxillofacial Surgery  , 48-56DOI: ( /j.ijom ) Copyright © 2017 International Association of Oral and Maxillofacial Surgeons Terms and Conditions

9 Fig. 8 Correlation of symmetry in visual perception with parameters.
Δ, The difference between bilateral parameters in the absolute value; T1, post orthognathic surgery and on completion of the orthodontic treatment (average of 12.6 months postoperatively). Statistical analysis, Spearman test. *Statistically significant, P<0.05. International Journal of Oral and Maxillofacial Surgery  , 48-56DOI: ( /j.ijom ) Copyright © 2017 International Association of Oral and Maxillofacial Surgeons Terms and Conditions


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