scholarly journals Airway analysis in skeletal Class I and Class II subjects with different growth patterns: A 2D cephalometric study

2020 ◽  
Vol 12 (5) ◽  
pp. 161
Author(s):  
SwaroopaR Ponnada ◽  
VivekR Ganugapanta ◽  
KiranK Perumalla ◽  
MohammedA Naqeed ◽  
T Harini ◽  
...  
Keyword(s):  
Class Ii ◽  
Growth Patterns ◽  
Class I ◽  
Skeletal Class ◽  
Cephalometric Study ◽  
Airway Analysis

scholarly journals Comparison of Cervical Vertebral Body Volume in Class II Vertical and Class II Horizontal Cases With Class I Cases Using 3D-DVT

2020 ◽  
Vol 54 (4) ◽  
pp. 332-337
Author(s):  
Hamza Saifuddin Dargahwala ◽  
Pallavi Daigavane ◽  
Vausdevan SD ◽  
Ranjit Kamble ◽  
Sunita Shrivastav ◽  
...  
Keyword(s):  
Vertebral Body ◽  
Cervical Vertebrae ◽  
Class Ii ◽  
Growth Patterns ◽  
Class I ◽  
Body Volume ◽  
Reference Structure ◽  
Skeletal Class ◽  
Significant Difference ◽  
Cervical Vertebral Body

The branch of orthodontics has had an interest in the cervical vertebrae wherein cervical spine is used as a reference structure for natural head position, so skeletal age was evaluated by studying variations in the cervical vertebral morphologies. Among all evaluations, very limited data is available wherein comparison between cervical vertebral body volumes between the different malocclusions has been done. This study aimed to compare the differences in the volumes of cervical vertebral bodies of C2, C3, and C4 between skeletal class I and class II malocclusions of both horizontal and vertical growth patterns. In class I the volume was significantly lesser as compared to class II. It was seen that there was statistically no significant difference in the volume between the horizontal and vertical growers. It can be concluded from this study that cervical vertebral body volume has no effect on growth pattern. However, variations in cervical vertebral body volume are seen with different malocclusions.

scholarly journals Evaluation of the position and morphology of tongue and hyoid bone in skeletal Class II malocclusion based on cone beam computed tomography

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Wener Chen ◽  
HungEn Mou ◽  
Yufen Qian ◽  
Liwen Qian
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Hyoid Bone ◽  
Class Ii ◽  
Growth Patterns ◽  
Class I ◽  
Cone Beam ◽  
Skeletal Class ◽  
Skeletal Class Ii ◽  
Average Angle

Abstract Background The aim of the study was to analyze the morphology and position of the tongue and hyoid bone in skeletal Class II patients with different vertical growth patterns by cone beam computed tomography in comparison to skeletal Class I patients. Methods Ninety subjects with malocclusion were divided into skeletal Class II and Class I groups by ANB angles. Based on different vertical growth patterns, subjects in each group were divided into 3 subgroups: high-angle group (MP-FH ≥ 32.0°), average-angle group (22.0° ≤ MP-FH < 32°) and low-angle group (MP-FH < 22°). The position and morphology of the tongue and hyoid bone were evaluated in the cone beam computed tomography images. The independent Student’s t‐test was used to compare the position and morphology of the tongue and hyoid bone between skeletal Class I and Class II groups. One-way analysis of variance (ANOVA) was used to compare the measurement indexes of different vertical facial patterns in each group. Results Patients in skeletal Class II group had lower tongue posture, and the tongue body was smaller than that of those in the Class I group (P < 0.05). The position of the hyoid bone was lower in the skeletal Class II group than in Class I group (P < 0.05). The tongue length and H-Me in the skeletal Class I group with a low angle were significantly larger than those with an average angle and high angle (P < 0.05). There was no significant difference in the position or morphology of the tongue and hyoid bone in the skeletal Class II group with different vertical facial patterns (P > 0.05). Conclusion Patients with skeletal Class II malocclusion have lower tongue posture, a smaller tongue body, and greater occurrence of posterior inferior hyoid bone position than skeletal Class I patients. The length of the mandibular body in skeletal Class I patients with a horizontal growth type is longer. The position and morphology of the tongue and hyoid bone were not greatly affected by vertical facial development in skeletal Class II patients.

scholarly journals Mandibular symphysis morphology and lower incisor angulation in different anteroposterior jaw relationships and skeletal growth patterns – a cephalometric study

2020 ◽  
Vol 93 (1) ◽  
pp. 97-104
Author(s):  
Sandhya Jain ◽  
Prateek Puniyani ◽  
Arwa Saifee
Keyword(s):  
Sampling Method ◽  
Class Ii ◽  
Growth Patterns ◽  
Class I ◽  
Strongly Correlated ◽  
Class Iii ◽  
Lower Incisor ◽  
Mandibular Symphysis ◽  
Lateral Cephalograms ◽  
Cephalometric Study

Objective. The purpose of the present study was to assess the symphyseal morphology and lower incisor angulation in different anteroposterior relationship and in different growth patterns and to investigate whether the symphyseal morphology had any correlation with dentofacial parameters. Method. Random Sampling method and lateral cephalograms of 90 subjects, age group 16-30 years, were divided into 30 in each group, i.e. Class I, Class II & Class III after calculating the following parameters (ANB angle, wits appraisal). After that, groups were again divided into 10 in each subgroup i.e. Average, Horizontal and Vertical growers. Results. Results showed the increase in actual symphysis width, inclination of the alveolar part, total height of symphysis and reduction in overall width along with retroclination of lower incisors in class III subjects as compared to class I and class II. Similarly actual and overall width of the symphysis were decreased and inclination of the alveolar part, symphyseal height and symphyseal ratio were increased in vertical growers. Conclusion. The dimensions and configuration of Mandibular Symphysis in class III was found to be different than those in Class I and Class II relationships; the alveolar part of Mandibular Symphyseal compensated for the skeletal relationship in the Class III pattern. Mandibualr Symphysis dimensions were strongly correlated to anterior facial dimensions. Similarly the dimensions and configuration of Mandibular Symphysis was also different in vertical growers as compared to horizontal and average growers, moreover symphyseal morphology and lower incisor angulation had a correlation with dentofacial parameters.

scholarly journals Prevalence of Dental Anomalies in Skeletal Malocclusions with Different Growth Patterns in North Indian Population- A Cross-sectional Study

2021 ◽  
Author(s):  
Floret Jose ◽  
Maninder S Sidhu ◽  
Ashish Dabas ◽  
Seema Grover ◽  
Namrata Dogra
Keyword(s):  
Growth Pattern ◽  
Indian Population ◽  
Class Ii ◽  
Growth Patterns ◽  
Class I ◽  
Class Ii Malocclusion ◽  
North Indian Population ◽  
Dental Anomalies ◽  
Skeletal Class ◽  
Skeletal Class Ii

Introduction: Anomalies of the developing dentition occur due to absence or interruption of normal tooth development along with genetic and/or environment influences. Craniofacial development and dental malocclusion is an interplay between a number of factors such as tooth size, arch size and shape, the number and arrangement of teeth, size and relationship of the jaws and related soft tissues including lips, cheeks, and tongue. Aim: To evaluate the prevalence and distribution of dental anomalies among different skeletal malocclusions and growth patterns in North Indian population. Materials and Methods: This retrospective cross-sectional study was conducted on pretreatment diagnostic records of 260 patients belonging to the age group of 15-25 years, who had reported to the Out Patient Department (OPD) of Department of Orthodontics, Faculty of Dental Sciences, SGT University, Gurugram, Haryana, India, during the period of April 2012 to December 2020. The analysis was carried out between November 2020 and January 2021. The study sample was grouped into different growth patterns and skeletal malocclusions based on Sella-Nasion-Gonion- Gnathion (SN Go-Gn) and ANB (A point, nasion, B point), Sagittal intermaxillary angle values respectively, which were obtained from the pretreatment lateral cephalometric tracings. The prevalence of dental anomalies was evaluated in each group by examining the pretreatment diagnostic records. Chi-Square/Fisher-Freeman- Halton test were used for statistical analysis. Results: The prevalence of dental anomalies in the study sample was 65 (25%). The most common anomaly found was over retained deciduous teeth, followed by ectopic eruption with prevalence rate of 30 (11.5%) and 24 (9.2%), respectively. A total of 142 (54.6%) patients had hypodivergent growth pattern, 23 (8.8%) had normodivergent growth pattern and 95 (36.5%) had hyperdivergent growth pattern. 36 (13.8%) patients had skeletal class I malocclusion, 205 (78.8%) had skeletal class II malocclusion and 19 (7.3%) patients had skeletal class III malocclusion. Hypodivergent group showed the highest prevalence of dental anomalies with 38 (26.8%), followed by hyperdivergent group with 23 (24.2%) and normodivergent group were 4 (17.4%). Skeletal class I malocclusion group had the highest number of dental anomalies as 13 (36.1%), followed by skeletal class II malocclusion with 50 (24.4%) and skeletal class III malocclusion group with 2 (10.5%). Conclusion: Hypodivergent growth pattern and skeletal class II malocclusion were the most prevalent growth pattern and skeletal malocclusion in North Indian population. Dental anomalies were most prevalent in patients with hypodivergent growth pattern and skeletal class I malocclusion. The results of the present study indicate that dental anomalies are associated with certain malocclusions and growth patterns which may contribute to more accurate treatment predictions.

scholarly journals Comparison of Hyoid Bone Position in Skeletal Class I Subjects with Varying Growth Patterns: A Cephalometric Study

2020 ◽  
Author(s):  
Mandeep Kaur Bhullar ◽  
Nikita Gupta ◽  
Sanjay Mittal ◽  
Isha Aggarwal ◽  
Tanzin Palkit ◽  
...  
Keyword(s):  
Hyoid Bone ◽  
Growth Patterns ◽  
Class I ◽  
Skeletal Class ◽  
Group Iii ◽  
Group I ◽  
Indian Origin ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Cephalometric Study

Abstract Introduction Hyoid bone plays a significant role in physiological functions of craniofacial region, and its position adapts to changes of the head posture. The objective of this study was to evaluate the hyoid bone position among skeletal Class I subjects with various growth patterns. Materials and Methods 90 subjects of north Indian origin, aged between 16 to 30 years, having skeletal class I relation were selected for the study. Subjects were then subdivided into three groups, that is, Group I (n = 30; normodivergent), Group II (n = 30; hypodivergent) and Group III (n = 30; hyperdivergent), based on their vertical growth pattern. Lateral cephalograms were traced and analyzed manually for evaluation of hyoid bone position. Result  The sagittal position of the hyoid bone shows no significant difference with varying growth patterns. The vertical relation G-C3Chor distance showed significant difference in hypodivergent subjects. The axial inclination of the hyoid bone showed no significant difference between different growth patterns. Conclusion The anteroposterior position of the hyoid bone does not change with different growth patterns in skeletal class I subjects. The G-C3Chor distance was found to be statistically significant when the three groups were compared.

scholarly journals Hyoid bone position and head posture comparison in skeletal Class I and Class II subjects: A retrospective cephalometric study

2014 ◽  
Vol 4 (3) ◽  
pp. 53
Author(s):  
PawankumarDnyandeo Tekale ◽  
KetanK Vakil ◽  
PrasadV Gayake ◽  
SunilkumarLaxman Nagmode
Keyword(s):  
Hyoid Bone ◽  
Class Ii ◽  
Class I ◽  
Skeletal Class ◽  
Head Posture ◽  
Cephalometric Study

scholarly journals Comparison between antegonial notch depth, symphysis morphology and ramus morphology among different growth patterns in skeletal class I and class II subjects

2020 ◽  
Vol 11 (SPL3) ◽  
pp. 1975-1983
Author(s):  
Abirami S ◽  
Navaneethan R ◽  
Remmiya Varghese
Keyword(s):  
Growth Pattern ◽  
Class Ii ◽  
Growth Patterns ◽  
Class I ◽  
Notch Depth ◽  
Average Growth ◽  
Skeletal Class ◽  
Vertical Growth ◽  
Significant Difference ◽  
Ramus Height

In orthodontics and dentofacial orthopaedics, a thorough knowledge of growth and development is essential in order to understand various factors that contribute as to how a particular type of growth takes place. When planning of orthodontic treatment for a malocclusion, one has to take into account the growth pattern, because it would considerably affect the success of the treatment. The purpose of this study was to compare antegonial notch depth, symphysis morphology, and ramus morphology in different growth patterns in skeletal class I and class II subjects. In this study, a total of 60 cephalograms were taken which comprised 30 cephalograms in skeletal class I and 30 cephalograms of skeletal class II patients. The groups were further divided into three groups, namely average, horizontal, and vertical growth patterns based on Jarabak’s ratio. Antegonial notch depth, symphysis width and symphysis angle, and ramus height were measured and compared between the growth patterns and between class I and class II skeletal patterns. An analysis of variance (ANOVA) test was performed to determine the comparison between groups for all these variables in both skeletal class I and class II. Independent 't' test was done to determine the comparison between skeletal class I and class II subjects for all variables. Mean and SD values for all variables were determined for all the groups. Depth of antegonial notch was found to be greater in vertical growth patterns compared to horizontal and average growth patterns. Large symphysis angle and symphysis width were noted in a horizontal growth pattern. Increased ramus height was noted in horizontal and average growth patterns. There was no significant difference between skeletal class I and class II malocclusion for all parameters.

Comparative Assessment of Sagittal Maxillo-mandibular Jaw Relationship - A Cephalometric Study

2012 ◽  
Vol 6 (1) ◽  
pp. 14-17 ◽  
Author(s):  
Abhishek Goyaliya ◽  
Rupesh Gupta
Keyword(s):  
Class Ii ◽  
Comparative Assessment ◽  
Class I ◽  
Age Group ◽  
Class Iii ◽  
Linear Measurements ◽  
Skeletal Class ◽  
Beta Angle ◽  
Insignificant Difference ◽  
Cephalometric Study

ABSTRACT History is evident that correct assessment of Sagittal Jaw Relationship has always remained the perennial problem in orthodontics. The present study is undertaken to use Sagittal methods for assessing individuals and classifying for Skeletal Class I, Class II and Class III based on Jaw Relationship and to evaluate the reliability of sagittal methods. 200 subjects in the age group of 12 to 18 yrs were selected and were subjected to cephalometric radiography and traced. The sample was divided into skeletal Class I, Class II and Class III on the basis of AXD angle, FABA angle and MM Bisector. Subsequently following angles and linear measurements were measured; Beta angle; AB plane angle; JYD angle; ANB angle; AXB angle; AF - BF and App - Bpp. Result - Consistency could be demonstrated by all the methods assessed by Antero-Posterior jaw relationship. Insignificant difference on influence of growth, age and sex was noted. Angular methods used for assessing jaw relationship such as FABA, AXD, Beta and linear measurements such as App-Bpp, MM Bisector could demonstrate superiority for assessing Antero-Posterior jaw relationship over other methods such as AXB, AB plane, ANB and AF-BF which showed more variability.

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