Three-dimensional changes in lip vermilion morphology of adult female patients after extraction and non-extraction orthodontic treatment

Korean Journal of Orthodontics
Zhi-Yu LiuTian-Min Xu

Abstract

To investigate the three-dimensional lip vermilion changes after extraction and non-extraction orthodontic treatment in female adult patients and explore the correlation between lip vermilion changes and incisor changes. Forty-seven young female adult patients were enrolled in this study (skeletal Class III patients were excluded), including 34 lip-protruding patients treated by extraction of four first premolars (18 patients requiring mini-implants for maximum anchorage control and 16 patients without mini-implants) and 13 patients requiring non-extraction treatment. Nine angles, seven distances, and the surface area of the lip vermilion were measured by using pre- and post-treatment three-dimensional facial scans. Linear and angular measurements of incisors were performed on lateral cephalograms. There were no significant changes in the vermilion measurements in the non-extraction group. The vermilion angle, vermilion height, central bow angle, height/width ratio, and vermilion surface area decreased significantly after the orthodontic treatment in the extraction groups, but the upper/lower vermilion proportion remained unchanged. Significant correlations were found between the changes in incisor position and those in vermili...Continue Reading

References

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Citations

Jan 14, 2021·Annals of Plastic Surgery·Ivy TangcoTing-Chen Lu
Mar 4, 2021·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Zhi-Yu LiuRuo-Ping Jiang
Mar 22, 2021·Clinical Oral Investigations·Reem I AndijaniDimitris N Tatakis
Aug 2, 2021·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Min-Ho Jung

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