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Research Article
A Retrospective Study of Dental Changes after Facial Contouring Surgery
Jong Chul Park
Wonjin Dental and Plastic Clinic
Corresponding Author
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Declarations:
Declarations
- This study involved human subjects.
- The author confirmed that all appropriate ethical guidelines for the use of human subjects have been followed, any necessary IRB and/or ethics committee review has been obtained, and information about the IRB/ethics committee is included in the manuscript.
- The author has confirmed that all necessary patient/participant consent or assent has been obtained and the appropriate institutional forms have been archived. If the IRB/ethics committee waived the requirement for patient/participant consent or assent, an explanation for the waiver is included in the text.
- The author has confirmed that a statement listing potential conflicts of interest or lack thereof is included in the text.
Background: The purpose of this study was to confirm whether long-term dental changes after people were aged beyond their 20s would be affected by undergoing facial contouring surgery, such as angle and zygoma reduction. Additionally, we intended to verify whether these changes would be significantly different depending on the type of contouring surgery.
Methods: We included 77 subjects who underwent contouring surgery from December 13, 2011, to December 3, 2018. Of these subjects, 73 were female, and 5 were male. We followed up with these patients from 11 to 82 months after surgery. The average follow-up period was 33.6 months. The age at surgery was 18 to 48 years old. The average age was 29.5 years old. To assess dental changes, we measured variables such as the extrusion of a maxillary anterior and posterior tooth, angle from point A to nasion to point B (ANB°) change, and overjet/overbite change between pre- and postoperative periods using computed tomography.
Results: There was a positive linear correlation between the extrusion of the maxillary teeth and the follow-up period. The correlation coefficients of incisors and molars were 0.454 and 0.461, respectively (p = 0.000 for incisors and 0.000 for molars). With age, there was also a negative correlation in extrusion. The correlation coefficient was -0.442 for incisors and -0.394 for molars (p = 0.000 for incisors and 0.000 for molars). We also confirmed significant differences in incisor extrusion and ANB° change depending on the type of surgery (p = 0.018 for incisor extrusion and 0.003 for ANB°).
Conclusion: We observed dental changes in subjects who underwent facial contouring surgery, and these changes were affected by the type of operation.
Keywords
contouring surgery, later growth, dental change, occlusion, extrusion, angle reduction, zygoma reduction
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This is a preprint. It has not completed peer review.
Research Article
A Retrospective Study of Dental Changes after Facial Contouring Surgery
Jong Chul Park
Wonjin Dental and Plastic Clinic
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 21 Sep, 2020
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Declarations:
Declarations
- This study involved human subjects.
- The author confirmed that all appropriate ethical guidelines for the use of human subjects have been followed, any necessary IRB and/or ethics committee review has been obtained, and information about the IRB/ethics committee is included in the manuscript.
- The author has confirmed that all necessary patient/participant consent or assent has been obtained and the appropriate institutional forms have been archived. If the IRB/ethics committee waived the requirement for patient/participant consent or assent, an explanation for the waiver is included in the text.
- The author has confirmed that a statement listing potential conflicts of interest or lack thereof is included in the text.
Background: The purpose of this study was to confirm whether long-term dental changes after people were aged beyond their 20s would be affected by undergoing facial contouring surgery, such as angle and zygoma reduction. Additionally, we intended to verify whether these changes would be significantly different depending on the type of contouring surgery.
Methods: We included 77 subjects who underwent contouring surgery from December 13, 2011, to December 3, 2018. Of these subjects, 73 were female, and 5 were male. We followed up with these patients from 11 to 82 months after surgery. The average follow-up period was 33.6 months. The age at surgery was 18 to 48 years old. The average age was 29.5 years old. To assess dental changes, we measured variables such as the extrusion of a maxillary anterior and posterior tooth, angle from point A to nasion to point B (ANB°) change, and overjet/overbite change between pre- and postoperative periods using computed tomography.
Results: There was a positive linear correlation between the extrusion of the maxillary teeth and the follow-up period. The correlation coefficients of incisors and molars were 0.454 and 0.461, respectively (p = 0.000 for incisors and 0.000 for molars). With age, there was also a negative correlation in extrusion. The correlation coefficient was -0.442 for incisors and -0.394 for molars (p = 0.000 for incisors and 0.000 for molars). We also confirmed significant differences in incisor extrusion and ANB° change depending on the type of surgery (p = 0.018 for incisor extrusion and 0.003 for ANB°).
Conclusion: We observed dental changes in subjects who underwent facial contouring surgery, and these changes were affected by the type of operation.
Figure 1
Figure 2
Figure 3