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Horizontal change of philtrum after orthognathic surgery in patients with facial asymmetry

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Authors
Joh, Yewon; Park, Hyun Soo; Yang, Hoon Joo; Hwang, Soon Jung
Issue Date
2019-11-13
Publisher
Springer Open
Citation
Maxillofacial Plastic and Reconstructive Surgery, 41(1):48
Keywords
Facial asymmetryPhiltrumDental midlineOrthognathic surgery
Abstract
Background
Soft tissue asymmetry such as lip canting or deviation of the philtrum is an important influencing factor for unbalanced facial appearance. Lip canting could be improved by the correction of the occlusal canting or positional change of the mentum. Although there are many studies about changes of lip canting, however, postoperative changes of philtrum deviation have not been yet reported. In this study, we investigate the positional change of the philtrum after orthognathic surgery and influencing factors.

Methods
Positional change of the philtrum was evaluated in 41 patients with facial asymmetry who underwent bimaxillary surgery, in relation to other anatomical soft tissue landmarks using a frontal clinical photo. The surgical movement of the maxillary and mandibular dental midline and canting were measured in postero-anterior cephalogram before and 1 day after surgery. The same procedure was repeated in patients with more than 1.5 mm perioperative change of the mandibular dental midline after bimaxillary surgery.

Results
Maxillary dental midline shifting and canting correction did not have a significant correlation with lateral movement of the philtrum midline. However, the mandibular shift had a statistically significant correlation with a lateral movement of the philtrum (p < 0.05) as well as other linear parameters and angle values.

Conclusion
The horizontal change of the philtrum is influenced by lateral mandibular movement in patients with facial asymmetry, rather than maxillary lateral movement.
ISSN
2288-8586
Language
English
URI
https://doi.org/10.1186/s40902-019-0232-2

http://hdl.handle.net/10371/164747
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College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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