Alveolar and Skeletal Chin Dimensions Associated with Lower Facial Height Among Different Divergent Patterns

My, Khan; Ms, Kishore; Bukhari, Syed Abid Altaf; Mr, Rachala; Nr, Sashidhar

doi:10.7860/jcdr/2016/19932.7811

Cited by 6 publications

(6 citation statements)

References 14 publications

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“…A study by Khan et al concluded that symphysis is narrow in hyper divergent and wide and short in hypo divergent subjects with mean vertical heights in normo divergent, hyper divergent and hypo divergent groups. The mean values for symphysis width in these groups were 12.07±0.96, 11.80±1.82, 13.07±1.79 respectively that is very close to our findings 27 . Contradictory to the above mentioned findings Alarcon in his study concluded that although sexual dimorphism occurs between all facial patterns and classes, vertical facial patterns behaves differently and needs individualization for every subject 28 .…”

Section: Resultssupporting

confidence: 91%

Determination of Mandibular Symphysis Width in Skeletal Class I Patients with Different Vertical Patterns

Riaz¹,

Azeem²,

Aziz³

et al. 2021

PJMHS

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Symphysis is an anatomical part of mandible that includes lower incisors and anterior chin. Mandibular symphysis is a contributing factor of facial harmony for esthetics and is a determinant for lower incisor position in orthodontic treatment planning for border line cases. This cross-sectional study was carried out in Orthodontics department, Fatima Memorial Hospital College of Medicine and Dentistry Lahore on a sample size of 90 cases using 95% confidence level. Non probability consecutive sampling technique was used. Symphyseal dimensions were measured on lateral cephalogram. Data collected was entered and analyzed in computer program SPSS version 20. Quantitative outcomes like symphysis dimensions, symphysis width, vertical pattern, and ANB were subjected to ANOVA of significance. Independent T-test was used to make the comparison between males and females on the basis of variables. Results of this study suggested thatC-C’ varies significantly between males and females, whereas the differences in symphysis width LA, and LP between males & females are statistically insignificant (P>0.05). Bone anterior to lower incisor apex varies significantly among various facial profiles with hypo divergent males exhibiting wider chin than normo divergent and hyper divergent subjects. Sexual dimorphism in symphysis width was seen among genders. Keywords: Facial harmony, lower incisor position

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Section: Resultssupporting

confidence: 91%

Determination of Mandibular Symphysis Width in Skeletal Class I Patients with Different Vertical Patterns

Riaz¹,

Azeem²,

Aziz³

et al. 2021

PJMHS

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show abstract

“…The total sample consisted of 495 cases, with 71.1% females and 28.3% males. Regarding sexual dimorphism in the mandibular symphysis, men had a higher mean value for symphysis width than women (Table V), which is in agreement with the results obtained in other studies in which this parameter was analyzed [6,15,18,[21][22][23][24][25][26][27][28][29][30]. In this research, men had an average width of 14.66 mm against 13.95 mm for females.…”

Section: Discussionsupporting

confidence: 91%

The relation between mandibular symphysis and the Angle class in orthodontic treatment

Nobre

Castro

Ponces

et al. 2022

Medicine and Pharmacy Reports

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Objectives. Facial perception depends on the different components of the face. The chin is a striking anatomical structure in the individual’s identity and mandibular symphysis (MS) shape influences the adjacent soft tissue, determining facial harmony. In lateral cephalometry, the MS corresponds to the image of the mandibular body in its anterior curvature. It shape, inclination and thickness provide valuable information for orthodontic diagnosis and prognosis. Since facial features are associated with malocclusions, the present investigation aims to relate the height, thickness and inclination of the MS using Angle’s Class. Methods. 495 lateral incidence cephalograms of an orthodontic population were analyzed using a previously developed and tested software. The sample was randomly selected and the height, thickness and inclination of the MS were measured. The values were statistically analyzed (p ≤ 0.05). Results. The distribution according to Angle’s Class was 48.9% for Class I, 34.7% for Class II Division 1, 7.4% for Class II Division 2 and 8.9% for Class III. The MS height did not´t show significant differences between the three dental classes. The MS thickness was significantly increased in Class II Division 2 and Class I subjects (p = 0,037). The MS inclination was significantly less in Class III subjects when compared to Class I and Class II Division 1 (p ≤ 0.001). Conclusions. The MS presented variations, which may be associated with a natural compensation against malocclusion, influencing the position of the teeth and their relationship with the other dento-craniofacial structures and with consequences on the facial harmony.

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“…The mandibular symphysis is located at the midline of the frontal part of the mandible, and constitutes the chin and frontal part of the lower face 1. Several factors affect the growth and shape of the mandibular symphysis, such as neuroskeletal balance,2 masseter muscle thickness,3 mandibular plane angle,4 overbite,256 lower incisor angle,7 occlusal function,8 and inheritance 9.…”

Section: Introductionmentioning

confidence: 99%

“…By using two-dimensional (2D) cephalometric analysis, many studies showed that the shape of the mandibular symphysis correlates with the facial skeletal pattern 115. Retrospective cephalometric analysis showed that individuals with brachyfacial patterns had more hard tissue on their chins, and individuals with a larger mandibular plane angle showed higher growth rate of the lower anterior facial height 1…”

Section: Introductionmentioning

confidence: 99%

Relationship between the maxillofacial skeletal pattern and the morphology of the mandibular symphysis: Structural equation modeling

et al. 2019

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Objective The purpose of this study was to investigate the relationship between the facial skeletal patterns and the shape of the mandibular symphysis in adults with malocclusion by using a structural equation model (SEM). Methods Ninety adults who had malocclusion and had records of facial skeletal measurements performed using cone-beam computed tomography were selected for this study. The skeletal measurements were classified into three groups (vertical, anteroposterior, and transverse). Cross-sectional images of the mandibular symphysis were analyzed using generalized Procrustes and principal component (PC) analyses. A SEM was constructed after the factors were extracted via factor analysis. Results Two factors were extracted from the transverse, vertical, and anteroposterior skeletal measurements. Latent variables were extracted for each factor. PC1, PC2, and PC3 were selected to analyze the variations of the mandibular symphyseal shape. The SEM was constructed using the skeletal variables, PCs, and latent variables. The SEM showed that the vertical latent variable exerted the most influence on the mandibular symphyseal shape. Conclusions The relationship between the skeletal pattern and the mandibular symphysis was analyzed using a SEM, which showed that the vertical facial skeletal pattern had the highest effect on the shape of the mandibular symphysis.

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Alveolar and Skeletal Chin Dimensions Associated with Lower Facial Height Among Different Divergent Patterns

Cited by 6 publications

References 14 publications

Determination of Mandibular Symphysis Width in Skeletal Class I Patients with Different Vertical Patterns

Determination of Mandibular Symphysis Width in Skeletal Class I Patients with Different Vertical Patterns

The relation between mandibular symphysis and the Angle class in orthodontic treatment

Relationship between the maxillofacial skeletal pattern and the morphology of the mandibular symphysis: Structural equation modeling

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