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Article
Orthodontic Treatment and Temporomandibular Joint Condylar Position Relationship with Disk Displacement (Magnetic Resonance Imaging Study)

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Abstract

Temporomandibular joint (TMJ) is a complex synovial articulation between the mandibular condyle and the glenoid fossa of temporal bone. The question of whether a relationship exists between orthodontic treatment, abnormal condyle and disk position, and temporomandibular disorders has been investigated for many years. Despite the abundance of studies, the question continues to trouble orthodontists.This study conducted to assess the relationship between orthodontic treatments, abnormal condyle and disk position, with temporomandibular disorders, and to study the disk- condyle relationship in term of presence or absence of anterior disk displacement. By mean of Magnetic Resonance Imaging a cross sectional investigation for the condyles of temporomandibular joints (TMJs) and disk position was conducted to 50 TMJs of 25 patients between 19-30 years of age who had undergone orthodontic treatment (by upper and lower fixed orthodontic appliances with extraction of maxillary first premolar only for treatment of class II division 1 malocclusion), and 50 TMJs of 25 patients who had not yet received orthodontic treatment from the same class and matched age group.The results of this study showed that 30% of pre-treatment group have anterior disk displacement in comparison to 26.0% of the post treatment group. The condyle position is more concentric in post treatment group than pre-treatment, and the position of the disk is not affected by orthodontic treatment. This conclude that condyle position of the TMJ may be affected by orthodontic treatment, but the disk position is not.


Article
The Impact of Thalassemia Major on Dental Integrity and Development

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Abstract

Thalassemia major is no longer a disease of childhood. Life expectancy of these patients has increased as a result of the dramatic change in medical management of thalassemia major in the past two decades. As patients with thalassemia major become older, their needs also are changed. Patients now face new issues, such as having families, obtaining higher education, and securing employment, which need more care and attention for their appearance in general and dental health in special.The aim of this study was to compare the dental maturity and integrity of a group of patients with β thalassaemia major with age and sex matched healthy controls in Baghdad.For this cross sectional study, a convenient sample of 100 (72 males and 28 females) thalassemic patients who were attending the thalassemia centers in AL-Karama and Ebin-AL Balady hospital was involved. The age of the patients ranged from 6 to15 years. A similar number, of healthy individuals matching with age and gender, was selected as control.Plaque, calculus, and gingival indices as well as decayed, missed and filled surfaces indicator are significantly different in thalaessaemic patients in comparison to control group. The thalaessaemic patients also demonstrated a delay in the development of their dentition.The thalassemic patients demonstrated a delay in the development of their dentition. The mean difference between chronologic and dental age was found to be statistically significant

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2009 (1)

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