Quantitative and perceived visual changes of the nasolabial fold following orthodontic retraction of lip protrusion

Eui Seon Baek; Soonshin Hwang; Yoon Jeong Choi; Mi Ryung Roh; Tung Nguyen; Kyung Ho Kim; Chooryung J. Chung

doi:10.2319/100317-665.1

Quantitative and perceived visual changes of the nasolabial fold following orthodontic retraction of lip protrusion

Eui Seon Baek, Soonshin Hwang, Yoon Jeong Choi, Mi Ryung Roh, Tung Nguyen, Kyung Ho Kim, Chooryung J. Chung

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Objectives: The objectives of this study were to evaluate the quantitative and perceived visual changes of the nasolabial fold (NLF) after maximum retraction in adults and to determine its contributing factors. Materials and Methods: A total of 39 adult women's cone-beam computed tomography images were collected retrospectively and divided into the retraction group (age 26.9 6 8.80) that underwent maximum retraction following 4 premolar extraction and the control group (age 24.6 6 5.36) with minor changes of the incisors. Three-dimensional morphologic changes of hard and soft tissue including NLF were measured by pre- and posttreatment cone-beam computed tomography. In addition, perceived visual change of the NLF was monitored using the modified Global Aesthetic Improvement Scale. The influence of age, initial severity of NLF, and initial soft tissue thickness was evaluated. Results: Anterior retraction induced significant changes of the facial soft tissue including the lips, perioral, and the NLF when compared with the controls (P, .01). Perceived visual changes of the NLF was noted only in women younger than age 30 (P, .05), with the odds ratio (95% confidence interval) of 2.44 (1.3461-4.4226), indicating greater possibility for improvement of NLF esthetics in young women of the retraction group when compared with the controls. Conclusions: Orthodontic retraction induced quantitative and perceived visual changes of the NLF. For adult women younger than age 30, the appearance of the NLF improved after maximum retraction despite the greater posterior change of the NLF. (Angle Orthod. 2018;88:465-473.)

Original language	English
Pages (from-to)	465-473
Number of pages	9
Journal	Angle Orthodontist
Volume	88
Issue number	4
DOIs	https://doi.org/10.2319/100317-665.1
Publication status	Published - 2018 Jul

Bibliographical note

Funding Information:
This study was supported by the Yonsei University College of Dentistry (6-2016-0029). We thank Professors S.H. Choi, J.W. Hong, T.S. Noh, and H. Kim for participating in the Global Aesthetic Improvement Scale scoring.

Publisher Copyright:
© 2018 by The EH Angle Education and Research Foundation, Inc.

All Science Journal Classification (ASJC) codes

Orthodontics

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10.2319/100317-665.1

Cite this

@article{f93ce2355df44153b8713630d5167ee0,

title = "Quantitative and perceived visual changes of the nasolabial fold following orthodontic retraction of lip protrusion",

abstract = "Objectives: The objectives of this study were to evaluate the quantitative and perceived visual changes of the nasolabial fold (NLF) after maximum retraction in adults and to determine its contributing factors. Materials and Methods: A total of 39 adult women's cone-beam computed tomography images were collected retrospectively and divided into the retraction group (age 26.9 6 8.80) that underwent maximum retraction following 4 premolar extraction and the control group (age 24.6 6 5.36) with minor changes of the incisors. Three-dimensional morphologic changes of hard and soft tissue including NLF were measured by pre- and posttreatment cone-beam computed tomography. In addition, perceived visual change of the NLF was monitored using the modified Global Aesthetic Improvement Scale. The influence of age, initial severity of NLF, and initial soft tissue thickness was evaluated. Results: Anterior retraction induced significant changes of the facial soft tissue including the lips, perioral, and the NLF when compared with the controls (P, .01). Perceived visual changes of the NLF was noted only in women younger than age 30 (P, .05), with the odds ratio (95% confidence interval) of 2.44 (1.3461-4.4226), indicating greater possibility for improvement of NLF esthetics in young women of the retraction group when compared with the controls. Conclusions: Orthodontic retraction induced quantitative and perceived visual changes of the NLF. For adult women younger than age 30, the appearance of the NLF improved after maximum retraction despite the greater posterior change of the NLF. (Angle Orthod. 2018;88:465-473.)",

author = "Baek, {Eui Seon} and Soonshin Hwang and Choi, {Yoon Jeong} and Roh, {Mi Ryung} and Tung Nguyen and Kim, {Kyung Ho} and Chung, {Chooryung J.}",

note = "Funding Information: This study was supported by the Yonsei University College of Dentistry (6-2016-0029). We thank Professors S.H. Choi, J.W. Hong, T.S. Noh, and H. Kim for participating in the Global Aesthetic Improvement Scale scoring. Publisher Copyright: {\textcopyright} 2018 by The EH Angle Education and Research Foundation, Inc.",

year = "2018",

month = jul,

doi = "10.2319/100317-665.1",

language = "English",

volume = "88",

pages = "465--473",

journal = "Angle Orthodontist",

issn = "0003-3219",

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T1 - Quantitative and perceived visual changes of the nasolabial fold following orthodontic retraction of lip protrusion

AU - Baek, Eui Seon

AU - Hwang, Soonshin

AU - Choi, Yoon Jeong

AU - Roh, Mi Ryung

AU - Nguyen, Tung

AU - Kim, Kyung Ho

AU - Chung, Chooryung J.

N1 - Funding Information: This study was supported by the Yonsei University College of Dentistry (6-2016-0029). We thank Professors S.H. Choi, J.W. Hong, T.S. Noh, and H. Kim for participating in the Global Aesthetic Improvement Scale scoring. Publisher Copyright: © 2018 by The EH Angle Education and Research Foundation, Inc.

PY - 2018/7

Y1 - 2018/7

N2 - Objectives: The objectives of this study were to evaluate the quantitative and perceived visual changes of the nasolabial fold (NLF) after maximum retraction in adults and to determine its contributing factors. Materials and Methods: A total of 39 adult women's cone-beam computed tomography images were collected retrospectively and divided into the retraction group (age 26.9 6 8.80) that underwent maximum retraction following 4 premolar extraction and the control group (age 24.6 6 5.36) with minor changes of the incisors. Three-dimensional morphologic changes of hard and soft tissue including NLF were measured by pre- and posttreatment cone-beam computed tomography. In addition, perceived visual change of the NLF was monitored using the modified Global Aesthetic Improvement Scale. The influence of age, initial severity of NLF, and initial soft tissue thickness was evaluated. Results: Anterior retraction induced significant changes of the facial soft tissue including the lips, perioral, and the NLF when compared with the controls (P, .01). Perceived visual changes of the NLF was noted only in women younger than age 30 (P, .05), with the odds ratio (95% confidence interval) of 2.44 (1.3461-4.4226), indicating greater possibility for improvement of NLF esthetics in young women of the retraction group when compared with the controls. Conclusions: Orthodontic retraction induced quantitative and perceived visual changes of the NLF. For adult women younger than age 30, the appearance of the NLF improved after maximum retraction despite the greater posterior change of the NLF. (Angle Orthod. 2018;88:465-473.)

AB - Objectives: The objectives of this study were to evaluate the quantitative and perceived visual changes of the nasolabial fold (NLF) after maximum retraction in adults and to determine its contributing factors. Materials and Methods: A total of 39 adult women's cone-beam computed tomography images were collected retrospectively and divided into the retraction group (age 26.9 6 8.80) that underwent maximum retraction following 4 premolar extraction and the control group (age 24.6 6 5.36) with minor changes of the incisors. Three-dimensional morphologic changes of hard and soft tissue including NLF were measured by pre- and posttreatment cone-beam computed tomography. In addition, perceived visual change of the NLF was monitored using the modified Global Aesthetic Improvement Scale. The influence of age, initial severity of NLF, and initial soft tissue thickness was evaluated. Results: Anterior retraction induced significant changes of the facial soft tissue including the lips, perioral, and the NLF when compared with the controls (P, .01). Perceived visual changes of the NLF was noted only in women younger than age 30 (P, .05), with the odds ratio (95% confidence interval) of 2.44 (1.3461-4.4226), indicating greater possibility for improvement of NLF esthetics in young women of the retraction group when compared with the controls. Conclusions: Orthodontic retraction induced quantitative and perceived visual changes of the NLF. For adult women younger than age 30, the appearance of the NLF improved after maximum retraction despite the greater posterior change of the NLF. (Angle Orthod. 2018;88:465-473.)

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JO - Angle Orthodontist

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Quantitative and perceived visual changes of the nasolabial fold following orthodontic retraction of lip protrusion

Abstract

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