scholarly journals The relationship between agenesis of third molar and craniofacial morphology in orthodontic patients

2018 ◽  
Vol 8 (4) ◽  
pp. 304 ◽  
Author(s):  
Narjes Akbari ◽  
MahdjoubeGoldani Moghadam ◽  
Farzane Etemadi
Keyword(s):  
Third Molar ◽  
Craniofacial Morphology ◽  
Orthodontic Patients ◽  
The Relationship

scholarly journals Nasal Morphology and Its Correlation to Craniofacial Morphology in Lateral Cephalometric Analysis

2021 ◽  
Vol 18 (6) ◽  
pp. 3064
Author(s):  
Agnieszka Jankowska ◽  
Joanna Janiszewska-Olszowska ◽  
Katarzyna Grocholewicz
Keyword(s):  
Soft Tissue ◽  
Nasal Bone ◽  
Correlation Coefficients ◽  
Craniofacial Morphology ◽  
Base Angle ◽  
Nasolabial Angle ◽  
Orthodontic Patients ◽  
Nose Shape ◽  
The Relationship ◽  
Spearman’S Correlation

Nose shape, size, and inclination influence facial appearance, but few studies concern the relationship between the nasal profile and craniofacial structures. The objective of this study was to analyze association of nasal cephalometric variables with skeletal structures, age, and sex. Cephalometric and nasal analysis was performed in 386 Polish orthodontic patients (aged 9–25 years). Student t-test and Mann–Whitney test were used to compare quantitative variables and Pearson’s or Spearman’s correlation coefficients—to find correlations. Soft tissue facial convexity angle correlates to Holdaway ratio, ANB (A-Nasion-B), and Wits appraisal. Nasal dorsum axis, nose length, nose depth (1) and nose depth (2), nose hump, lower dorsum convexity, and columella convexity increase with age. Nasal base angle, nasolabial angle, nasomental angle, soft tissue facial convexity and nasal bone angle decrease with age. Nasal base angle and nasomental angle are smaller in females. Thus, a relationship exists between nasal morphology and sagittal jaw configuration. Nasal parameters significantly change with age. Sexual dimorphism characterizes nasal bone angle and nasomental angle.

scholarly journals The Relationship between Temporomandibular Joint Pathology and Craniofacial Morphology in Orthodontic Patients

2014 ◽  
Vol 24 (1) ◽  
pp. 1-8
Author(s):  
KUMIKO IJUIN ◽  
TATSUYUKI SHIBUSAWA ◽  
TAISEI FUJIKAWA ◽  
MAKIKO ATARASHI ◽  
KOUTARO MAKI
Keyword(s):  
Temporomandibular Joint ◽  
Craniofacial Morphology ◽  
Joint Pathology ◽  
Orthodontic Patients ◽  
The Relationship

scholarly journals Patterns of third-molar agenesis in an orthodontic patient population with different skeletal malocclusions

2011 ◽  
Vol 82 (1) ◽  
pp. 165-169 ◽  
Author(s):  
Mevlut Celikoglu ◽  
Hasan Kamak
Keyword(s):  
Patient Population ◽  
Third Molar ◽  
Class Iii ◽  
Missing Teeth ◽  
Chi Square ◽  
Skeletal Malocclusion ◽  
Third Molar Agenesis ◽  
Chi Square Test ◽  
Orthodontic Patients ◽  
The Relationship

Abstract Objective: To examine the relationship between third-molar agenesis and different skeletal malocclusion patterns. Materials and Methods: Pretreatment records of 1046 orthodontic patients (aged 13–17 years; mean age, 14.07 ± 1.27) were used. Third-molar agenesis was calculated with respect to genders, number of missing teeth, jaws, and skeletal malocclusion patterns. The Pearson chi-square test was performed to determine potential differences. Results: Among the 1046 subjects, 237 subjects were diagnosed with third-molar agenesis (22.7%) with no statistical gender difference (P > .05). It was more common in the maxilla than in the mandible or in both jaws (P < .01). The prevalence of patients with a third-molar agenesis was the most commonly found type (P < .001). The prevalence of third-molar agenesis in those with a Class III malocclusion was significantly higher than in those with Class I or Class II (P < .05). However, there was similar prevalence among the hyper-divergent (24.5%), normal (23.8%), and hypo-divergent (19.2%) groups (P > .05). Conclusion: These results suggest that agenesis of the third molar does not depend on vertical patterns of the skeletal malocclusions, but does depend on sagittal skeletal malocclusions in this orthodontic patient population.

scholarly journals Type of article: Research article “Association of ABO blood groups with craniofacial morphology among orthodontic patients of Kathmandu district”

2019 ◽  
Author(s):  
Sanjay Prasad Gupta
Keyword(s):  
Blood Group ◽  
Blood Groups ◽  
Craniofacial Morphology ◽  
Abo Blood Groups ◽  
Lateral Cephalogram ◽  
Genetic Components ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Orthodontic Patients ◽  
The Relationship

Abstract Background: The craniofacial morphology and blood groups both are related to genetic components, hence it can be hypothesized that blood groups have an association with craniofacial morphology. Some studies showed the relationship whereas others could not find any relationship that may be due to geographic diversity of the population. The aim of this study was to find out the relationship between ABO blood groups and craniofacial morphology among orthodontic patients of Kathmandu district. Materials and Methods: In this cross sectional study, a total of 385 participants (age range from 13-45 years) were selected among the orthodontic patients who came for orthodontic treatment in private orthodontic clinics. After obtaining written consent, all the patient’s demographic information were recorded and lateral cephalograms were obtained from the patient’s record. Blood group of all the participants was recorded. Results: The study found that among the total of 385 participants, 162 (42.07%) were male while 223 (57.93%) were female and the mean age was 16.31±4.38 years. Twenty cephalometric parameters depicting craniofacial morphology were digitally analyzed using lateral cephalogram. The prevalence of blood group O patients was highest (32.20%) followed by blood group B (30.64%), blood group A (29.88%) and blood group AB (7.28%). Statistical analysis with one way ANOVA was used for association of numerical data and blood groups that revealed nine out of twenty cephalometric parameters were statistically significant among different blood groups (p<0.05). Tukey post hoc test was done to find out where the significant difference occurs among the groups. Conclusions: The evaluation of the relationship between blood group and craniofacial morphology revealed that blood groups have association with some craniofacial parameters. This suggest, there may be some genetic influence of ABO blood group on craniofacial morphology. Keywords ABO blood groups, Craniofacial morphology, Association, Orthodontic patients

The relation between third molar agenesis and craniofacial morphology

2012 ◽  
Vol 42 (12) ◽  
pp. 51-64
Author(s):  
Nagwa Enany ◽  
Ahmed El-Kalza ◽  
Fatma El-Shikhy
Keyword(s):  
Third Molar ◽  
Craniofacial Morphology ◽  
Third Molar Agenesis

scholarly journals Assessment of role of mandibular third molar in lower anterior crowding among orthodontic patients of Kathmandu Nepal

2020 ◽  
Vol 10 (3) ◽  
pp. 21-26
Author(s):  
Bashu Dev Pant ◽  
Anjana Rajbhandari ◽  
Resina Pradhan ◽  
Manju Bajracharya ◽  
Surendra Maharjan ◽  
...  
Keyword(s):  
Third Molar ◽  
Cross Sectional Study ◽  
Third Molars ◽  
Chi Square ◽  
Cross Sectional ◽  
Anterior Crowding ◽  
Mandibular Third Molar ◽  
Significant Difference ◽  
Orthodontic Patients

Introduction: Crowding in mandibular arch increases with increasing age and etiology of crowding is multifactorial in nature. Role of mandibular third molar in lower anterior crowding remains a topic of controvery over a period of century. The objective of this study was to assess whether there is any correlation between presence of mandibular third molar position and lower anterior crowding. Materials and Method: On the basis of third molar position one hundred and six sample of pretreatment orthodontic patients aged between 17 to 38 years were divided into erupted, erupting and agenesis group. The study was conducted in Peoples Dental College and Hospital from January 2020 to March 2020 after obtaining ethical approval from the institutional review committee. This cross-sectional study was done on dental casts and orthopantomogram; brass wire was used for measuring arch length and digital vernier caliper for measuring tooth material with modified segmental arch analysis method. Result: Among 106 samples collected 55 (51.88%) were female and 51(48.11%) were male and the mean age was 21.53 ± 3.91 years, Chi square and ANOVA test was used for Statistical analysis. This study showed no statistically significant differences between third molar position and lower anterior crowding on right (P= 0.68) and left side (P = 0.45). The study also showed that association between the third molar position and lower anterior crowding is more on left side compared to right side. Conclusion: Mandibular third molars have not statistically significant difference in lower anterior crowding so, extraction of third molars for relieving the anterior crowding is not justifiable

scholarly journals Evaluation of the Relationship between Mandibular Third Molar and Mandibular Canal by Different Algorithms of Cone-beam Computed Tomography

2014 ◽  
Vol 15 (6) ◽  
pp. 740-745
Author(s):  
Mojdeh Mehdizadeh ◽  
Navid Ahmadi ◽  
Mahsa Jamshidi
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Inferior Alveolar Nerve ◽  
Third Molar ◽  
Mandibular Canal ◽  
Cross Sectional Study ◽  
Cone Beam ◽  
Cross Sectional ◽  
Mandibular Third Molar ◽  
The Relationship

ABSTRACT Objectives Exact location of the inferior alveolar nerve (IAN) bundle is very important. The aim of this study is to evaluate the relationship between the mandibular third molar and the mandibular canal by cone-beam computed tomography. Study design This was a cross-sectional study with convenience sampling. 94 mandibular CBCTs performed with CSANEX 3D machine (Soredex, Finland) and 3D system chosen. Vertical and horizontal relationship between the mandibular canal and the third molar depicted by 3D, panoramic reformat view of CBCT and cross-sectional view. Cross-sectional view was our gold standard and other view evaluated by it. Results There were significant differences between the vertical and horizontal relation of nerve and tooth in all views (p < 0.001). Conclusion The results showed differences in the position of the inferior alveolar nerve with different views of CBCT, so CBCT images are not quite reliable and have possibility of error. How to cite this article Mehdizadeh M, Ahmadi N, Jamshidi M. Evaluation of the Relationship between Mandibular Third Molar and Mandibular Canal by Different Algorithms of Cone-beam Computed Tomography. J Contemp Dent Pract 2014;15(6):740-745.

scholarly journals The Relationship between Palatal Displacement of Upper Canines and Incisors Widths in a Syrian Sample of Patients with Uncrowded Arches

2015 ◽  
Vol 16 (11) ◽  
pp. 873-875 ◽  
Author(s):  
Luai Mahaini
Keyword(s):  
Orthodontic Treatment ◽  
Matched Control ◽  
Control Sample ◽  
Tooth Size ◽  
Orthodontic Patients ◽  
Treatment Plans ◽  
The Right ◽  
The Relationship ◽  
Mandibular Incisors ◽  
Dental Casts

ABSTRACT The aim of this study investigates mesiodistal crown size of the maxillary and mandibular incisors of patients with palatally impacted canines (PDC). Pretreatment dental casts of orthodontic patients with PDC of one or both maxillary canines (N: 33) were collected. This PDC sample was matched according to age and sex with pretreatment dental casts from unaffected orthodontic patients. For the PDC and matched control samples, maximum mesiodistal crown diameters were recorded for the four incisors on the right side only. The results showed that, on average, the mesiodistal crown diameters for the maxillary and mandibular incisors measured smaller in the PDC sample than in the control sample. These findings of statistically significant tooth-size reductions associated with PDC occurrence indicate a generalized pattern of reduced tooth size as a characteristic associated with the PDC anomaly. Further, the presence of generalized tooth-size reduction in cases with palatally displaced canines help explain why most orthodontic treatment plans for PDC patients are of the nonextraction type. How to cite this article Mahaini L. The Relationship between Palatal Displacement of Upper Canines and Incisors Widths in a Syrian Sample of Patients with Uncrowded Arches. J Contemp Dent Pract 2015;16(11):873-875

scholarly journals Frequency of mandibular third molar surgical impactions in orthodontic patients with different antegonial notching

2019 ◽  
Vol 8 (3) ◽  
pp. 112-116
Author(s):  
Muhammad Azeem ◽  
Muhammad Mudassar Saleem ◽  
Zubair Hassan Awaisi ◽  
Muhammad Imran Saleh ◽  
Zubair Ahmed ◽  
...  
Keyword(s):  
Third Molar ◽  
Morphological Characteristics ◽  
P Value ◽  
Third Molars ◽  
Cross Sectional ◽  
Male And Female ◽  
Mandibular Third Molar ◽  
Orthodontic Patients ◽  
Inferior Border ◽  
Medical University

Background: Few studies have been reported so far on the frequency of lower third molar impactions in patients with different morphological characteristics. Our aim in this study was to find out the frequency of impacted lower third molars in orthodontic patients with different antegonial notch depths. Material and Methods: This cross-sectional research was conducted at Orthodontics Department of Dental Section, Faisalabad Medical University, Faisalabad, and de’Montmorency College of Dentistry, Lahore, Pakistan from June 2017 to June 2019. A total of 60 orthopantomograms (OPGs) of patients with impacted lower third molars were included. The depth of antegonial notch was calculated on all the selected OPGs by measuring distance between the deepest area of the notch cavity and the tangent on the inferior border of the mandible. The patients with depth of antegonial notch of 1 mm or less were labeled as having shallow antegonial notch, while those with 3 mm or more were considered as having deep antegonial notch. Percentages and mean + SD were calculated for different variables. Depth of antegonial notching was compared between genders using ANOVA with P-value <0.5 considered as significant. Results: Of 60 orthodontic patients, there was an equal number of male and female patients (n=30). The average age of the patients was 25.5±4 years. Overall frequency of impactions was similar in both the genders and frequency of impacted lower third molars was found to be greater in patients with deeper antegonial notches. Conclusion: Mandibular third molar impactions were most frequent in orthodontic patients with deep antegonial notches

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