Navid Hosseini; Saeide Talezade; Soghra Yassaie; Zahra Moradi
Abstract
Background: Many studies have been conducted in Iran to know the prevalence of malocclusions and orthodontics needs but no study so far has been conducted in Yazd.
Objectives: The aim of this study was to determine the prevalence of anterior open bite (AOBO) among 11 - 12 years old school-aging children ...
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Background: Many studies have been conducted in Iran to know the prevalence of malocclusions and orthodontics needs but no study so far has been conducted in Yazd.
Objectives: The aim of this study was to determine the prevalence of anterior open bite (AOBO) among 11 - 12 years old school-aging children in Yazd, Iran.
Patients and Methods: A total number 550 (278 boys and 272 girls) school aging children between 11 - 12 years old with permanent dentition were selected in this study from Yazd, Iran. The subjects were randomly selected, and none had received previous orthodontic treatment. Clinical examinations were carried out by one trained and calibrated examiner. The occlusal anteriorposterior sagital relationship were assessed based on the angle classification and also the vertical anterior relationship. The statistical software SPSS version 22 was used for the analysis different parameters as gender and age.
Results: AOB was present in 2.9% of subjects. 2.1% of the male and 3.6% of the females students in the sample were affected with anterior open bite. The prevalence of class I, class II and class III malocclusion with AOB was 1.7%, 3.2%, 21.4%, respectively.
Conclusions: This study shows that 2.9% of children examined had anterior open bite malocclusion which required treatment.
Navid Hosseini; H. Azadikhah; Soghra Yassaie; Mohammad Tayyebi
Abstract
Background and aim: cross bite is an Abnormal relationship between one or more teeth and their corresponding antagonist tooth so that the buccolingual or labiolingual relationship is opposite. Given the high prevalence and impact of these disorders, diagnosis and early treatment of this problem is very ...
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Background and aim: cross bite is an Abnormal relationship between one or more teeth and their corresponding antagonist tooth so that the buccolingual or labiolingual relationship is opposite. Given the high prevalence and impact of these disorders, diagnosis and early treatment of this problem is very important. The aim of this study is to determine the prevalence of anterior and posterior cross bite for girls and boys who were 7-10 years old in Yazd, Iran.Materials and methods: This cross-sectional study on 400 students aged 7-10 was carried out using clinical examination. Examinations were performed by the dentist and the presence or absence of crossbite and occlusal relationship was evaluated in the mixed dentition.Results: The prevalence of anterior cross bite is 11% ,12.9% of girls and 9% of boys and prevalence of posterior cross bite was 3.5%, 4.5% in girls and 2.5% in boys. prevalence of anterior cross-bite at age 9 was 11.9% and posterior cross bite at age 10 was 7.1% which are the highest rates reported .In mouth breathing children 35.7% and 21.4%, had anterior and posterior cross bite respectively. The anterior and posterior cross bite was more in Class II malocclusion than any other malocclusion. Among the cases investigated, mouth breathing and malocclusion have correlation with crossbites.Conclusion: Given the prevalence of anterior and posterior cross bite, mothers should be awared on the prevention and control of these disorders and also periodic examinations of children To prevent complications in future.
Mohammad Hosseinikhah; Soghra Yassaie; Navid Rezaie
Abstract
Background and aim: This study is aimed at specifying the indices of soft tissues of the face in male subjects 18-25 years old with proportional faces in Yazd, and comparing it to the northern European race using photography and anthropometry.Materials and methods: 80 male individuals in age range of ...
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Background and aim: This study is aimed at specifying the indices of soft tissues of the face in male subjects 18-25 years old with proportional faces in Yazd, and comparing it to the northern European race using photography and anthropometry.Materials and methods: 80 male individuals in age range of 18-25 were selected from among university students of yazd who had normal occlusion and proportional faces with no background of Truma, mandible-face surgery, rhinoplasty or orthodontic treatment. Standard photography of “natural head position” (NHP) and half face position was shot on subjects. Then the facial anthropometric indices were measured directly using a caliper with long jaws. All the photographs were printed out in color, and facial angles were drawn and measured. Acquired data was analyzed using the statistical software of SPSS II.Results: This study shows that that face form in Iranian race is different from that of northern Europeans. The Ala-Ala, Zy'-Zy', Go'-Go' indices, nasofrontal angle, upper and lower lips’ vermilion, facial index, and mandible-face widthes were significantly different from the study on northern European race carried out by Farkas.Conclusion: Considering less cheek (malar) width and more facial index in our study compared to that of Farkas, Iranian samples were more inclined to the dolichofacial form of the face.
