Yahya Baradaran Nakhjavan; Farid Baradaran Nakhjavan; Mina Sedarat
Abstract
Aim: Disorders of dentition and gums are highly common in contemporary societies and its prevalence is increasing gradually. All psychological and social problems due to dentofacial esthetics and oral function and periodontal disease deterioration and dental caries has made orthodontic treatments important ...
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Aim: Disorders of dentition and gums are highly common in contemporary societies and its prevalence is increasing gradually. All psychological and social problems due to dentofacial esthetics and oral function and periodontal disease deterioration and dental caries has made orthodontic treatments important and considering that the relationship of molars is the key to occlusion, this study examines the occlusion relationship (1st molar- canine). Materials and methods: 1800 students aged 9-10 from 20 regions of Tehran were randomly selected and studied using cross-sectional method. After excluding mentally retarded and aberrant ethnicities and those with previous orthodontic treatment from sample size, the remnants were examined as 5 groups (class I, class II, class III, different right and left, unidentifiable) based on Angel classification. Results: 48.4% of subjects were identified to have class I occlusion, 25.6% class II, 6.7% class III, 15.9% had different right and left, and 3.3% had unidentifiable occlusion. Conclusion: the prevalence of normal occlusion in this study was much lower compared with similar studies in other parts of the world and in Iranian literature as well. Malocclusion showed an ascending fashion; disagreement of class I and II malocclusions with similar Iranian and foreign studies seem to explain genetic background, type of diet, differences in instrument and measurements, and sample size and ethnicity and other factors.
Ladan Eslamian; Kaveh Alavi; Sanaz Mehdizadeh
Abstract
Aim: Understanding or self-image about beauty of teeth has been considered as the most common reasons for referrals to orthodontic treatment. The aim of this study was to evaluate the Expectations and self-concepts of patients referred for orthodontic treatment in a private office and Shahid Beheshti, ...
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Aim: Understanding or self-image about beauty of teeth has been considered as the most common reasons for referrals to orthodontic treatment. The aim of this study was to evaluate the Expectations and self-concepts of patients referred for orthodontic treatment in a private office and Shahid Beheshti, Dental School.Materials and Methods: To evaluate patient's expectations and self concept, a questionnaire consisting of 13 close and 2 open questions was prepared. To determine whether the problems of patients are realistic, an orthodontist visited all patients and recorded the findings on a structured questionnaire. In addition some variables that might influence the score that Petients and recorded to evaluate their own dental beauties were analyzed. To analyze the data, Chi-square, t test, ANOVA, Kappa statistic and multi-variable linear regression model were used.Results: Totally 252 individuals (92 males and 160 females) were evaluated. The girls thought treatment times was longer and the cost was very higher. One- third thought they need other dental treatment. The patients were often sent by doctors or dentist than their friends or family. 24.4% of patients who had TMD problems, mentioned them as the cause of their orthodontic treatment. The patients grades to selected C1 I pictures, had significant differences with each other (P<0.001).Conclusion: The individuals image of his teeth was influenced by external, functional and social factors.
Ladan Eslamian; Kaveh Alavi; Sanaz Mehdizadeh
Abstract
Background and Aim: Conventional orthodontic treatment may affect on physical appearance and psychological aspect of patients. However, patient's attitude, expectations and self - concept influence the result of treatment. The aim of this study was to evaluate the expectations and self - concepts of ...
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Background and Aim: Conventional orthodontic treatment may affect on physical appearance and psychological aspect of patients. However, patient's attitude, expectations and self - concept influence the result of treatment. The aim of this study was to evaluate the expectations and self - concepts of patients referred to have orthodontic treatment to a private office and Shahid Beheshti, Dental School. Materials & Methods: To evaluate patient's expectations and self-concept, a questionnaire consisting of 13 close and 2 open questions was prepared. To determine whether the problems of patients are realistic, an orthodontist visited all patients and recorded the findings on a structured questionnaire. In addition some variables that might influence the score that patients recorded to evaluate their own dental esthetic were analyzed. To analyze the data, Chi-square, t test, ANOVA, Kappa statistic and multi-variable linear regression model were used.Results: Totally 252 individuals (92 males and 160 females) were evaluated. The most common orthodontic disharmony according to patient's view was irregularity in upper and lower front teeth (51.6%). Social problems were not common, but more than half of the girls sometimes had experienced shyness when laughing, due to their dental appearance. The patients' mean score to their own dental esthetic was 6.4±1.9, ranged from 0 to 10. This score was related to occlusion problems more than other variables.Conclusion: The patients did not diagnose their occlusion problems properly. Nevertheless they had not low self - esteem.
Amirfarhang Miresmaeili; Aliasghar Soleimani
Abstract
Aim: Malocclusion may be caused by tooth size discrepancy and it is impossible to achieve perfect treatment results without regarding this etiologic factor. The aim of present study was to determining and comparing the mesiodistal width of permanent teeth in normal occlusion group and patients with class ...
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Aim: Malocclusion may be caused by tooth size discrepancy and it is impossible to achieve perfect treatment results without regarding this etiologic factor. The aim of present study was to determining and comparing the mesiodistal width of permanent teeth in normal occlusion group and patients with class 1 crowding malocclusion in Hamedan.
Material and Method: Based on Andrews normal occlusion criteria among 3335 students of Hamedan pre-university schools 32 persons were selected as normal group. In matched sex and range of age , 32 patients with class 1 crowding malocclusion were selected from a private office . Orthodontic dental casts of all samples were prepared. Mesiodistal width of all teeth (except 2nd molars), overbite, over-jet and Bolton indices were measured 3 times. Student t test and Mann whiteny u test were used for analysis.
Results: In crowding group the mesiodistal width of all teeth except for the first molars, were significantly greater than normal group specially in upper lateral incisors and lower premolars. Maxillary tooth material was 5.3 millimeter (p=0.0005) and mandibular tooth material was 5.4 millimeter (p=0.0036) greater in crowding patients. In crowding patients, overjet was significantly less and overbite was significantly more than normal group (p=0.0001) There was not significant difference in Bolton index between 2 groups.
Conclusion: It seems there is more crowding tendency in cases with large teeth. According to results. Bolton discrepancy (tooth size discrepancy) cannot be considered as a frequent factor in developing class 1 crowding. 2006; 1: 66 - 69)
Amirfarhang Miresmaeili; Nasrin Farhadian; Marjan Tadjbakhsh
Abstract
Introduction: There are several studies to evaluate lento-skeletal changes after treatment of skeletal class 2 malocclusion with Dr Farmand's functional appliance but in non of them facial harmony has been considered. The purpose of the present study is evaluation of facial harmony in addition to dentoskeletal ...
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Introduction: There are several studies to evaluate lento-skeletal changes after treatment of skeletal class 2 malocclusion with Dr Farmand's functional appliance but in non of them facial harmony has been considered. The purpose of the present study is evaluation of facial harmony in addition to dentoskeletal changes after treatment with Dr Farmand 's functional appliance.Materials and Methods: Initial and final cephalograms of eighteen treated skeletal class 2 div 1 patients have been selected. All of them had been treated with Farmand's appliance before termination of growth spurt. Each cephalogram was separately traced two times. Means of before and after treatment data were compared with paired t-test.Results: Skeletal class 2 relationship has been successfully corrected through decreasing ANB angle (1.88±1.75, p=0.00), 66 and angle of convexity(-1.47±1.21 , p=0.00), and Also dental changes (upper incisor retrusion and lower incisor protrusion) were occurred (decrease of U1 to SN was -4.77±4.71 , p=0.00 and increase in IMPA was +3.93±2.87 ,p=0.00). Soft tissue changes involved retrusion of upper lip to E-line (-2.86±1.88, p=0.00) and decrease of upper sulcus dept (-1.55±2.04, p=0.005) and lower sulcus dept (-2.44±1.85 ,p=0.00) which played an important role in improvement of facial harmony . Lower lip was placed more anteriorly relative to H-line (1.37±1.48 p=0.001) which is not desirable in profile harmony.Conclusion: Dr Farmand's functional appliance is effective in treating skeletal class 2 patients by producing skeletal as well as dental improvement. Soft tissue harmony also is improved but final position of lower lip must be regarded more carefully.
