scholarly journals Mesiodistal Crown Diameter of Normal Occlusion and Different Malocclusion Groups for a Sample of Kurdish Population of Erbil City

2020 ◽  
Vol 10 (1) ◽  
pp. 32-37
Author(s):  
Rawand J. Othman ◽  
Jameel A. Alkhashan
Keyword(s):  
Class Ii ◽  
Division I ◽  
Class I ◽  
Tooth Size ◽  
Class Iii ◽  
Crown Diameter ◽  
Lower Canine ◽  
Tooth Width ◽  
Normal Occlusion ◽  
Division Ii

It is essential to know the tooth crown size to provide accurate diagnosis and treatment planning to ensure the satisfactory outcome of orthodontic treatment. The aim of the present study was to measure and compare mesiodistal crown diameter of a Kurdish sample in Erbil city with normal and different classes of malocclusion. The mesiodistal tooth width was measured by an electronic digital caliper on a total of 150 (75 males and 75 females) orthodontic models of secondary school students of different occlusal relationships (Class I normal occlusion, Class I, Class II division I, Class II division II, and Class III malocclusions). The results showed that (1) the maxillary right first molar was significantly larger than the left one and both maxillary right lateral incisors and first premolars were larger than their contralateral teeth at the level of P < 0.01. (2) Both upper and lower canine were significantly smaller in females than in males; (3) Class I malocclusion showed tendency toward larger teeth than the rest of the other occlusal categories; (4) no statistically significant differences in tooth size were found among the Class II division I, division II, and Class III malocclusions when compared to normal occlusion. In conclusion, females had smaller teeth than males and there was asymmetry between the right and left sides in tooth size and Class I malocclusion showed tendency toward larger teeth.

scholarly journals Differences in Dental Arch Dimensions in a Sample of Kurdish Population among Different Occlusal Categories

2020 ◽  
Vol 10 (1) ◽  
pp. 51-55
Author(s):  
Rawand J. Othman ◽  
Hiwa S. Khidir
Keyword(s):  
Class Ii ◽  
Division I ◽  
Class I ◽  
Dental Arch ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Arch Width ◽  
Satisfactory Outcome ◽  
Normal Occlusion ◽  
Division Ii

It is essential to know dental arch dimensions to provide accurate diagnosis and treatment planning to ensure the satisfactory outcome of orthodontic treatment. The aim of the present study was to measure and compare dental arch dimensions of a Kurdish sample in Erbil city with normal and different classes of malocclusion. Arch width and length were measured by an electronic digital caliper on a total of 150 orthodontic models of school students aged 16–20 years of different occlusal relationships (Class I normal occlusion, Class I, Class II division I, Class II Division II, and Class III malocclusions). The results showed that (1) girls have smaller arch parameters than boys; (2) Class II division II malocclusion showed a significantly smaller upper inter canine width, arch length, incisor molar distance, and incisor canine distance when compared to all other groups; (3) the upper inter premolar and inter molar width were significantly narrower in Class II division I malocclusion than of normal occlusions and Class III malocclusion and also narrower in Class I malocclusion than in normal occlusions for both arches; (4) the arch length was significantly longer in Class II division I when compared to Class II division II, Class I malocclusions (P < 0.01), Class III malocclusion and Class I normal occlusion (P < 0.05), and (5) no statistically significant differences were found in all the arch dimensions for Class III malocclusion when compared with the normal occlusion. In conclusion, girls had smaller arch dimension than boys and Class II Division II malocclusion showed smaller arch in all dimensions while Class II division I malocclusion revealed narrower arch width and longer arch length.

scholarly journals Overall and Anterior Tooth Size Ratios in a Group of Emiratis

2018 ◽  
Vol 12 (1) ◽  
pp. 655-663 ◽  
Author(s):  
Moaza Ghuloom Mohammad ◽  
Shazia Naser-ud Din ◽  
Amar Hassan Khamis ◽  
Athanasios E. Athanasiou
Keyword(s):  
Class Ii ◽  
Anterior Tooth ◽  
Class I ◽  
Tooth Size ◽  
Class Iii ◽  
Mean Values ◽  
Normal Occlusion ◽  
Size Discrepancy ◽  
Tooth Size Discrepancy ◽  
Dental Casts

Objectives:The aims of this investigation in a group of Emiratis were (1) To study overall and anterior tooth size ratios in Class I normal occlusion, (2) To estimate overall and anterior tooth size ratios in different malocclusion groups, (3) To compare overall and anterior tooth size ratios in Class I normal occlusion with the Bolton standards, and (4) To determine the distribution of overall and anterior tooth size ratios ± 2 SD from Bolton mean values in all occlusion groups.Materials and Methods:In this cross-sectional investigation, consecutive patients’ files, including dental casts, were selected from the archives of orthodontic clinics of the Dubai Health Authority. The final sample was formed following the application of specific inclusion criteria. The sample consisted of 521 pairs of dental casts representing both sexes (males: 188; females: 333) and different malocclusion groups (Class I: 288; Class II: 110; Class III: 30) and Class I normal occlusion (93). The mean age of patients was 16.18y for Class I, 15.73y for Class II, 15.83y for Class III, and 16.55y for Class I normal occlusion. The dental casts were scanned and digitized by the first author using the Ortho Insight 3D laser scanner. Measurements were made regarding maxillary and mandibular sums of mesiodistal tooth dimension of the overall (6-6) and anterior (3-3) groups of teeth. Statistical analysis included descriptive statistics, pairedt-test and Analysis of Variance (ANOVA). The level of significance was set atp<0.05.Results:There were statistically significant differences among malocclusion groups with regard to overall and anterior tooth size ratios. However, the comparison between the Class I normal occlusion group and the Bolton standards showed no statistically significant differences. Only five cases in Class II malocclusion presented an anterior tooth size discrepancy outside plus 2 SD from Bolton mean values and one case in Class I malocclusion presented with an overall tooth size discrepancy outside plus 2 SD from Bolton mean values.Conclusion:This study of the different occlusion groups of the Emirati sample concluded that (a) Class I normal occlusion cases presented similar overall and anterior tooth size ratios to Bolton standards; (b) Overall and anterior tooth size ratios among different malocclusion groups exhibited statistically significant differences; (c) Five cases in Class II malocclusion presented an anterior tooth size discrepancy outside plus 2 SD from Bolton mean values, and (d) One case in Class I malocclusion presented an overall tooth size discrepancy outside plus 2 SD from Bolton mean values.

Prevalence of Malocclusions in Autistic Patients in Isfahan

2021 ◽  
Author(s):  
Zahra Ali Mehtari ◽  
Mehdi Rafiei ◽  
Saeed Azarbayjani ◽  
Neda Ahmadi Rouzbehani ◽  
Amir Hossain Moeini
Keyword(s):  
Class Ii ◽  
Autism Spectrum ◽  
Open Bite ◽  
Class I ◽  
Dental Student ◽  
Class Iii ◽  
Cross Sectional ◽  
Deep Bite ◽  
Normal Occlusion ◽  
Age Range

Introduction: Autism spectrum disorder (ASD) is a group of neurodevelopmental disorders diagnosed by impairments in social interaction and communication with repetitive and restrictive stereotyped behavioral patterns. The Prevalence of autism has been reported to be increased in recent years. This study aimed to assess the prevalence of different types of malocclusion among ASD patients in Isfahan in 2018. Materials & Methods: In a descriptive and cross-sectional trial, 92 ASD patients were studied in the age range of 7-18 years at the center for autism patients in Isfahan. Clinical oral examinations of patients are taken to assess the involved malocclusions (Cl I, Cl II and Cl III malocclusions) and malocclusion traits (deep bite, open bite and cross bite) by an educated dental student under the supervision of an orthodontist under natural light. The data are reported using frequency and percentage indices. Results: Class I malocclusion had the highest prevalence 54.3% (50) among ASD patients and the prevalence of class II and class III were found to be 19.6% (18) and 7.6% (7) respectively. The frequency of malocclusions traits of deep bite, cross bite and the open bite were 27.2% (25), 18.5% (17) and 7.6% (7) respectively. Among of the total patients, 65.2% (60) showed normal bite and 18/5% (17) showed Normal occlusion. Conclusion: ASD patients showed class I, class II and class III malocclusions from the most to least frequency and the most frequent malocclusion traits were also deep bite, cross bite and open bite respectively.

Prevalence of Malocclusion among School Children of Biratnagar, Nepal

2021 ◽  
Vol 11 (1) ◽  
pp. 46-48
Author(s):  
Nidhi Giri ◽  
Anand Acharya ◽  
Kanika Yadav
Keyword(s):  
School Children ◽  
Class Ii ◽  
Cross Sectional Study ◽  
Class I ◽  
Class Iii ◽  
Cross Sectional ◽  
Total Study Population ◽  
Medical College ◽  
Normal Occlusion ◽  
Study Population

Introduction: Various forms of malocclusion are a matter of serious concern in Nepalese population. This study was carried out to understand the prevalence of malocclusion among the school children of Biratnagar. The objective of this research is to find out the prevalence of malocclusion of children from different schools of Biratnagar visiting the Pedodontics and Orthodontics department of Nobel Medical College and Teaching Hospital, Biratnagar. Materials and Method: A descriptive cross sectional study method was used in this research. Data was collected by using direct observation of the subjects and occlusal assessment was done according to Angle’s classification and Dewey’s modification types of class I, class II and class III malocclusion. Result: Subjects with normal occlusion was found to be 39 % and with malocclusion was found to be 61%. Among them, class I malocclusion (60%) and angles class II div I subjects (88.33%) were in majority of the total study population. Conclusion: The present study helps to determine the prevalence of malocclusion and need of orthodontic treatment for the school children of Biratnagar

scholarly journals Analysis of Interarch Tooth Size Relationship in Nepalese Subjects with Normal Occlusion and Malocclusions

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Rajeev Kumar Mishra ◽  
Dashrath Kafle ◽  
Rahul Gupta
Keyword(s):  
Study Groups ◽  
Class Ii ◽  
Class I ◽  
Tooth Size ◽  
Class Ii Malocclusion ◽  
Normal Occlusion ◽  
Size Discrepancy ◽  
Clinically Significant ◽  
Anterior Ratio ◽  
Overall Ratio

Introduction. A proportional relationship between the maxillary and mandibular teeth size is required for achieving good finish with proper overjet and overbite postorthodontic treatment. The aims and objectives of this study were to determine the anterior and overall Bolton’s ratio in Nepalese population, to compare Bolton’s ratio between subjects with normal occlusion, Class I malocclusion, and Class II malocclusion, to compare these results with Bolton’s norm, and to determine the frequency of clinically significant (beyond 2 SD) tooth size discrepancy compared to Bolton’s norm. Materials and Methods. The study models of the subjects with normal occlusion and Angle’s Class I malocclusion and Class II malocclusion and fulfilling the inclusion criteria were retrieved from department archives. An electronic digital caliper was used to measure mesiodistal tooth size of the maxillary and mandibular teeth anterior to the second molars. The study sample of 120 study models consisted of the normal occlusion group (n = 31), Class I malocclusion group (n = 47), and Class II malocclusion group (n = 42). These measurements were then used to obtain Bolton’s ratio in three groups of subjects. Bolton’s ratio of study groups was compared with each other and with Bolton’s original ratio. Results. The differences in tooth size ratio of the study groups were not significant statistically, when the groups were compared on the basis of malocclusion or gender. Statistically significant differences were exclusively observed between the study groups and Bolton’s original sample for the anterior ratio. The frequency of the clinically significant tooth size ratio discrepancy was lower for the overall ratio (9.1%) compared to the anterior ratio (22.5%). Conclusions. Bolton’s analysis on the Nepalese population sample shows that there was no significant difference observed on the anterior and overall tooth size ratios when these were compared based on Angle’s malocclusion classes or gender. The clinically significant anterior tooth size discrepancy was more prevalent than that of the overall ratio.

scholarly journals The prevalence of orthodontic treatment need and malocclusion problems in 8–9-year-old schoolchildren: A study in the south of Thailand

2019 ◽  
Vol 9 ◽  
pp. 99-104 ◽  
Author(s):  
Sirate Rapeepattana ◽  
Angkana Thearmontree ◽  
Supanee Suntornlohanakul
Keyword(s):  
Orthodontic Treatment ◽  
Class Ii ◽  
Mixed Dentition ◽  
Class I ◽  
Class Iii ◽  
The South ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Treatment Need ◽  
Normal Occlusion

Aims This study aims to find the prevalence of orthodontic treatment need and malocclusion problems in 8–9-year-old schoolchildren in the south of Thailand. Materials and Methods A number of 202 children (100 boys and 102 girls) samples were randomly selected from all schools in Hat Yai District, Songkhla Province, Thailand. A cross-sectional survey of dental health component (DHC) of the Index of Orthodontic Treatment Need (IOTN) and malocclusion problems was investigated by clinical examination and dental model. Results Levels 4 and 5 of orthodontic treatment need according to DHC of IOTN of the sample were presented in 18.8% and 1.49%, respectively. Children who need orthodontic treatment (Grade 2–4) showed more than one highest DHC problem that indicated the level of treatment need (39.68%). Normal occlusion was found at 6.43%. Malocclusions such as Class I, Class II division 1, Class II division 2, and Class III malocclusion were observed in 78.71%, 7.92%, 3.47%, and 3.47%, respectively. Reversed overjet and overjet >9 mm were detected in 5.64% and 1.58%, respectively. Approximately half of the children (46.67%) had overbite >3.5 mm. Conclusions High percentage of children in mixed dentition period who need orthodontic treatment was found in this study. Some children who presented with the orthodontic treatment need Grade 2–4 had more than one DHC problem which identified the grade of treatment need. Class I malocclusion was most frequently found in this group of children.

scholarly journals Correlation of Angle SNA to Angle NSAR in Normal Occlusion, Class II Division I and Class III Malocclusion in Vidarbha Region - A Cephalometric Study

2021 ◽  
Vol 10 (32) ◽  
pp. 2543-2547
Author(s):  
Rashmi Jawalekar ◽  
Pushpa Hazare ◽  
Ranjit H. Kamble ◽  
Vikrant V. Jadhav
Keyword(s):  
Morphological Feature ◽  
Class Ii ◽  
Division I ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Normal Occlusion ◽  
Facial Harmony ◽  
Structural Imbalance ◽  
Level Of Significance ◽  
Cephalometric Study

BACKGROUND Facial prognathism may be because of prognathic maxilla, prognathic mandible or aggregate of both. Numerous studies performed to diagnose a single morphological feature commonly producing protrusive relationship, revealed that ‘a single morphological feature does not ordinarily produce a protrusive relationship. Existence of structural imbalance in one area also affects the nature of balance in other areas. A number of separate but inter-related cause and effect factors tend to augment each other in a cumulative and composite manner. Effect of marked discrepancy of an individual’s facial part could be cancelled or nullified by deviation of another part in opposite direction, ultimately resulting in good facial harmony. In this study by means of cephalometric roentgenography, the relation between Angle SNA and Angle NSAr was assessed in Vidharbhites, having normal occlusion, Class II division I and class III malocclusion. METHODS 40 individuals of normal occlusion, Class II division I and Class III Malocclusion, each between 16 and 25 years were analysed. These subjects were selected from patients reporting the outpatient department of Government Dental College, Nagpur. Statistically correlation between angles SNA and NSAr at level of significance 5 % was assessed. RESULTS After data collection a thorough observation & analysis was done and co-relation coefficient between SNA angle & NSAr (F--1.054 M--0.7981), also standard deviation of angular cephalometric measurement between males & females was found out in the population, leading to discussion on topic ‘Facial prognathism is due to maxillary prognathism, mandibular prognathism or combination of both’. In Females SNA was found to be 81 - 800 1.91310 and in males SNA was 82.1660 4. 380 respectively. CONCLUSIONS The results inferred that “Marked part of variation in Angle SNA can be explained by variation in Angle NSAr. KEY WORDS Angle SNA, Angle NSAr, Correlation

scholarly journals RADIOGRAPHIC INVESTIGATION OF DENTAL ANOMALIES IN LIBYAN ORTHODONTIC PATIENTS

2015 ◽  
Vol 5 ◽  
Author(s):  
Iman Abdelgader ◽  
Tyisir Gnaiber ◽  
Kadija Emnina ◽  
Sulieman Orofi
Keyword(s):  
Class Ii ◽  
Incidence Rates ◽  
Division I ◽  
Class I ◽  
Class Iii ◽  
Dental Anomalies ◽  
Dental Anomaly ◽  
Ectopic Eruption ◽  
Orthodontic Patients ◽  
Male Subjects

Aim: The purpose of this study was to evaluate the prevalence of dental anomalies in different Libyan orthodontic malocclusions.Materials and Methods: Pretreatment orthodontic records of 252 Subjects (57 Males and 195 Females) were classified as Class I (159), Class II Division I (66), Class II Division II (8) and Class III (19). The incidence rates of specific dental anomalies were investigated and analyzed to study the differences of rates of each anomaly according to sex and malocclusion using descriptive analysisResult: It was found that (53.5%) of the patients had at least one dental anomaly in this study. ectopic eruption was the most prevalent dental anomaly (34.9%) followed by thin pipette-shaped roots and short blunt root (30.1%, 24.2%) respectively.Conclusions: Male subjects showed more ectopic eruption and short blunt root then female, Class I malocclusion had the most prevalent dental anomalies compared to the other malocclusion groups.

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