Effect of Soft Tissue Thickness on the Morphology of Lip in Orthodontic Treatment

SUMMARY: The aim of this study was to evaluate the effect of soft tissue thickness of upper lip on lip retraction in orthodonticaltreated females and identify the ratio of maxillary incisor retraction to upper lip retraction. Pre- and post-treatment lateral cephalograms of 100 adults were examined t...

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Autores principales:	Guan,Yu-Xin, Xin,Li, Tian,Peng-Fei, Kyung,Hee-Moon, Kwon,Tae-Geon, Bing,Li, Wu,Xiu-Ping
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2019
Materias:	Morphological characteristics Malocclusion Incisor retraction Cephalometric measurements Soft tissue profile
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000401245
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spelling	oai:scielo:S0717-950220190004012452019-09-11Effect of Soft Tissue Thickness on the Morphology of Lip in Orthodontic TreatmentGuan,Yu-XinXin,LiTian,Peng-FeiKyung,Hee-MoonKwon,Tae-GeonBing,LiWu,Xiu-Ping Morphological characteristics Malocclusion Incisor retraction Cephalometric measurements Soft tissue profile SUMMARY: The aim of this study was to evaluate the effect of soft tissue thickness of upper lip on lip retraction in orthodonticaltreated females and identify the ratio of maxillary incisor retraction to upper lip retraction. Pre- and post-treatment lateral cephalograms of 100 adults were examined to measure the lip thickness in upper lip and establish the classification standard. All subjects were treated with 4 first premolar extractions followed by upper central incisors retraction. Pre- and post-treatment lateral cephalograms of 19 patients were reviewed to determine the changes of the upper lip and incisor positions through landmarks displacement. An independent-samples t test and one-way analysis of variance were performed. The correlations between maxillary incisor retraction and upper lip retraction were explored by the Pearson correlation method. P-values<0.05 were considered statistically significant. The lip thickness of adult male patients was greater than that of adult female patients. The average ratio of maxillary incisor retraction to upper lip repositioning was 1.6:1,1.9:1 and 2.2:1 in the thin lips group, normal lips group and thick lips group, respectively. Gender differences exist in the thickness of upper lip. Horizontal changes of the maxillary incisor showed a significant correlation to horizontal changes of the upper lip (P<0.001).There were negative correlations between the thickness of upper lip and the ratio between change in maxillary incisor protrusion and change in upper lip protrusion.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.37 n.4 20192019-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000401245en10.4067/S0717-95022019000401245
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Morphological characteristics Malocclusion Incisor retraction Cephalometric measurements Soft tissue profile
spellingShingle	Morphological characteristics Malocclusion Incisor retraction Cephalometric measurements Soft tissue profile Guan,Yu-Xin Xin,Li Tian,Peng-Fei Kyung,Hee-Moon Kwon,Tae-Geon Bing,Li Wu,Xiu-Ping Effect of Soft Tissue Thickness on the Morphology of Lip in Orthodontic Treatment
description	SUMMARY: The aim of this study was to evaluate the effect of soft tissue thickness of upper lip on lip retraction in orthodonticaltreated females and identify the ratio of maxillary incisor retraction to upper lip retraction. Pre- and post-treatment lateral cephalograms of 100 adults were examined to measure the lip thickness in upper lip and establish the classification standard. All subjects were treated with 4 first premolar extractions followed by upper central incisors retraction. Pre- and post-treatment lateral cephalograms of 19 patients were reviewed to determine the changes of the upper lip and incisor positions through landmarks displacement. An independent-samples t test and one-way analysis of variance were performed. The correlations between maxillary incisor retraction and upper lip retraction were explored by the Pearson correlation method. P-values<0.05 were considered statistically significant. The lip thickness of adult male patients was greater than that of adult female patients. The average ratio of maxillary incisor retraction to upper lip repositioning was 1.6:1,1.9:1 and 2.2:1 in the thin lips group, normal lips group and thick lips group, respectively. Gender differences exist in the thickness of upper lip. Horizontal changes of the maxillary incisor showed a significant correlation to horizontal changes of the upper lip (P<0.001).There were negative correlations between the thickness of upper lip and the ratio between change in maxillary incisor protrusion and change in upper lip protrusion.
author	Guan,Yu-Xin Xin,Li Tian,Peng-Fei Kyung,Hee-Moon Kwon,Tae-Geon Bing,Li Wu,Xiu-Ping
author_facet	Guan,Yu-Xin Xin,Li Tian,Peng-Fei Kyung,Hee-Moon Kwon,Tae-Geon Bing,Li Wu,Xiu-Ping
author_sort	Guan,Yu-Xin
title	Effect of Soft Tissue Thickness on the Morphology of Lip in Orthodontic Treatment
title_short	Effect of Soft Tissue Thickness on the Morphology of Lip in Orthodontic Treatment
title_full	Effect of Soft Tissue Thickness on the Morphology of Lip in Orthodontic Treatment
title_fullStr	Effect of Soft Tissue Thickness on the Morphology of Lip in Orthodontic Treatment
title_full_unstemmed	Effect of Soft Tissue Thickness on the Morphology of Lip in Orthodontic Treatment
title_sort	effect of soft tissue thickness on the morphology of lip in orthodontic treatment
publisher	Sociedad Chilena de Anatomía
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022019000401245
work_keys_str_mv	AT guanyuxin effectofsofttissuethicknessonthemorphologyoflipinorthodontictreatment AT xinli effectofsofttissuethicknessonthemorphologyoflipinorthodontictreatment AT tianpengfei effectofsofttissuethicknessonthemorphologyoflipinorthodontictreatment AT kyungheemoon effectofsofttissuethicknessonthemorphologyoflipinorthodontictreatment AT kwontaegeon effectofsofttissuethicknessonthemorphologyoflipinorthodontictreatment AT bingli effectofsofttissuethicknessonthemorphologyoflipinorthodontictreatment AT wuxiuping effectofsofttissuethicknessonthemorphologyoflipinorthodontictreatment
_version_	1718445117741727744

Effect of Soft Tissue Thickness on the Morphology of Lip in Orthodontic Treatment

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