Morphological Characteristics of the Cranial Base of Early Angle's Class II Division 1 Malocclusion in Permanent Teeth

To investigate the effects of morphological characteristics of cranial base on malocclusion by analyzing characteristics of sagittal and vertical facial types of Angle's class II division 1 malocclusion so as to provide theoretical references for clinical diagnosis and correction of early Angle...

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Autores principales:	Wu,Xiu-Ping, Xuan,Jing, Liu,Han-yan, Xue,Mei-rong, Bing,Li
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2017
Materias:	Cranial base Class II division 1 malocclusion Cephalometric measurements Morphological characteristics
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200034
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spelling	oai:scielo:S0717-950220170002000342017-08-07Morphological Characteristics of the Cranial Base of Early Angle's Class II Division 1 Malocclusion in Permanent TeethWu,Xiu-PingXuan,JingLiu,Han-yanXue,Mei-rongBing,Li Cranial base Class II division 1 malocclusion Cephalometric measurements Morphological characteristics To investigate the effects of morphological characteristics of cranial base on malocclusion by analyzing characteristics of sagittal and vertical facial types of Angle's class II division 1 malocclusion so as to provide theoretical references for clinical diagnosis and correction of early Angle's class II division 1 malocclusion in permanent teeth. We randomly selected lateral radiographs of the skull of 80 patients at the age of 1214 years old from the Department of Orthodontics, Stomatological Hospital, Shanxi Medical University, China. There were 20 cases of Angle's class I malocclusion with average angle, 20 cases of Angle's class II division 1 malocclusion with average angle, 20 cases of Angle's class II division 1 malocclusion with low angle, and 20 cases of Angle's class II division 1 malocclusion with high angle. Winceph 8.0 software was used to measure 39 hard tissue markers and 13 indicators reflecting the characteristics of cranial base structure. One-way t-test was used in the average-angle class II division 1 group and average-angle class I group. Least significantdifference was utilized in patients with different vertical types of class II division 1 malocclusion.nterior (S-N) and posterior (S-Ba) cranial base lengths,and total cranial base length(Ba-N) were significantly longer in the class II division 1 patients compared with the class I patients. Significant differences in anterior cranial floor base angle (CF-PM), middle cranial floor base angle (Ba-SE-PM), and posterior cranial base inclination (SBa-FH) were determined between class II division 1 malocclusion and class I malocclusion patients. CF-PM angle and SBa-FH were smaller in class II division 1 subjects than in class I subjects. Ba-SE-PM angle and cranial floor base angle (Ba-SE-FMS) were larger in class II division 1 subjects than in class I subjects. No significant difference in cranial base angle (N-S-Ba) and anterior cranial base inclination (SN-FH) was detected between class II division 1 subjects and class I subjects. Morphology of cranial base and cranial floor base has a significant effect on sagittal and vertical facial types of Angle's class II division 1 malocclusion. The changes in the length of the posterior skull base and the inclination of the anterior skull base are mainly presented in the sagittal direction. Angle of cranial base and cranial floor base plays a certain role in vertical facial type of Angle's class II division 1 malocclusion.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.35 n.2 20172017-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200034en10.4067/S0717-95022017000200034
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Cranial base Class II division 1 malocclusion Cephalometric measurements Morphological characteristics
spellingShingle	Cranial base Class II division 1 malocclusion Cephalometric measurements Morphological characteristics Wu,Xiu-Ping Xuan,Jing Liu,Han-yan Xue,Mei-rong Bing,Li Morphological Characteristics of the Cranial Base of Early Angle's Class II Division 1 Malocclusion in Permanent Teeth
description	To investigate the effects of morphological characteristics of cranial base on malocclusion by analyzing characteristics of sagittal and vertical facial types of Angle's class II division 1 malocclusion so as to provide theoretical references for clinical diagnosis and correction of early Angle's class II division 1 malocclusion in permanent teeth. We randomly selected lateral radiographs of the skull of 80 patients at the age of 1214 years old from the Department of Orthodontics, Stomatological Hospital, Shanxi Medical University, China. There were 20 cases of Angle's class I malocclusion with average angle, 20 cases of Angle's class II division 1 malocclusion with average angle, 20 cases of Angle's class II division 1 malocclusion with low angle, and 20 cases of Angle's class II division 1 malocclusion with high angle. Winceph 8.0 software was used to measure 39 hard tissue markers and 13 indicators reflecting the characteristics of cranial base structure. One-way t-test was used in the average-angle class II division 1 group and average-angle class I group. Least significantdifference was utilized in patients with different vertical types of class II division 1 malocclusion.nterior (S-N) and posterior (S-Ba) cranial base lengths,and total cranial base length(Ba-N) were significantly longer in the class II division 1 patients compared with the class I patients. Significant differences in anterior cranial floor base angle (CF-PM), middle cranial floor base angle (Ba-SE-PM), and posterior cranial base inclination (SBa-FH) were determined between class II division 1 malocclusion and class I malocclusion patients. CF-PM angle and SBa-FH were smaller in class II division 1 subjects than in class I subjects. Ba-SE-PM angle and cranial floor base angle (Ba-SE-FMS) were larger in class II division 1 subjects than in class I subjects. No significant difference in cranial base angle (N-S-Ba) and anterior cranial base inclination (SN-FH) was detected between class II division 1 subjects and class I subjects. Morphology of cranial base and cranial floor base has a significant effect on sagittal and vertical facial types of Angle's class II division 1 malocclusion. The changes in the length of the posterior skull base and the inclination of the anterior skull base are mainly presented in the sagittal direction. Angle of cranial base and cranial floor base plays a certain role in vertical facial type of Angle's class II division 1 malocclusion.
author	Wu,Xiu-Ping Xuan,Jing Liu,Han-yan Xue,Mei-rong Bing,Li
author_facet	Wu,Xiu-Ping Xuan,Jing Liu,Han-yan Xue,Mei-rong Bing,Li
author_sort	Wu,Xiu-Ping
title	Morphological Characteristics of the Cranial Base of Early Angle's Class II Division 1 Malocclusion in Permanent Teeth
title_short	Morphological Characteristics of the Cranial Base of Early Angle's Class II Division 1 Malocclusion in Permanent Teeth
title_full	Morphological Characteristics of the Cranial Base of Early Angle's Class II Division 1 Malocclusion in Permanent Teeth
title_fullStr	Morphological Characteristics of the Cranial Base of Early Angle's Class II Division 1 Malocclusion in Permanent Teeth
title_full_unstemmed	Morphological Characteristics of the Cranial Base of Early Angle's Class II Division 1 Malocclusion in Permanent Teeth
title_sort	morphological characteristics of the cranial base of early angle's class ii division 1 malocclusion in permanent teeth
publisher	Sociedad Chilena de Anatomía
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200034
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Morphological Characteristics of the Cranial Base of Early Angle's Class II Division 1 Malocclusion in Permanent Teeth

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