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Register a new userPrevalence and Patterns of Hypodontia in a Sample of Syrian Orthodontic patients
نسبة انتشار غياب الأسنان ونماذجه لدى عينة من مرضى التقويم السوريين
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رانية حداد( باحث )
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هدف البحث: 1- تحديد نسب انتشار غياب الأسنان الدائمة في عينة من مرضى التقويم في المجتمع السوري 2- ونماذج هذا الغياب. المواد والطرائق: تمت دراسة سجلات 623 مريض بأعمار 12-34 من مراجعي قسم تقويم الأسنان في كلية طب الأسنان/جامعة دمشق خلال السنوات الثلاثة الأخيرة (2011-2014) لإحصاء نسبة المرضى الذين لديهم غياب لسن دائمة أو أكثر. النتائج: 1- كانت نسبة انتشار غياب الأسنان7.10% من العينة المدروسة (7.49% للإناث و 6.35% للذكور). الذكورُ أقل تأثراً من الإناث بنسبة 1:1.18 دون أي فارق إحصائي بين الجنسين (P = 0.063). 2- السن الأكثر تعرضاً للغياب هي الرباعية العلوية (56.52%)، والسن الأقل غياباً هي الرحى الأولى العلوية (0.87%). وكانت نسبة الغياب في الفك العلوي أعلى منها في الفك السفلي بفارق دال إحصائياً (P=0.041) وفي الأسنان الأمامية أكثر منها في الخلفية بفارق دال إحصائياً (P=0.009). الاستنتاجات: إن نسبة انتشار غياب الأسنان التي أظهرتها هذه الدراسة تقع ضمن المدى الذي نُشِر في الأدبيات ا
Aims of study: 1-To determine the prevalence and 2- the pattern of hypodontia in the permanent dentition in a sample of Syrian orthodontic patients who sought orthodontic treatment. Materials and Methods: The orthodontic records of 623 patients aged 12 to 34, who sought orthodontic treatment in the Department of Orthodontics, Dental faculty/Damascus University, during the last three years (2011-2014), were investigated to establish the prevalence of patients with one or more permanent missing teeth. Results: 1-The prevalence of hypodontia was 7.10% of the studied sample (7.49% in females, and 6.35% in males). Males were less affected than females with a ratio of 1:1.18 with no significant differences between genders (P = 0.063). 2-The most common missing tooth was maxillary lateral incisor (56.52%), the least common missing tooth was maxillary first molar (0.87%). Missing in the maxillary jaw was significantly more frequent than the mandible (P=0.041( with significantly more anterior teeth missing than posterior teeth (P=0.009). Conclusions: The prevalence of hypodontia showed in this study was within the range published in the literature. The patterns are similar to most reported patterns in the literature.
References used
Whittington BR, Durward CS. Survey of anomalies in primary teeth and their correlation with permanent dentition. N Z Dent J Vol.92, 1996, 4-8
Celikoglu, M.; Kazanci, F.; Miloglu, O.; Oztek, O.; Kamak, H.; Ceylan, I. Frequency and characteristic of tooth agenesis among an orthodontic patient population. Med Oral Pathol Cir Bucal. Vol.15, 2010, 797-801
Jorgenson, RJ. Clinician’s view of hypodontia. J Am Dent Assoc. Vol.101:283–286, 1980
Dermaut LR, Goeffers KR, and De Smit AA. Prevalence of tooth agenesis correlated with jaw relationship and dental crowding. AJO Vol.90, 1986, 204-210
Lynham A. Panoramic radiographic survey of hypodontia in Australian Defence Force recruits. Austral Dent J Vol.35, 1990, 19-22
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Background:Microscopic colitis (MC) encompasses collagenous and lymphocytic
colitis and is diagnosed by histopathological changes of random biopsies which tacken
from each segment of normal macroscopically colonic mucosae from patients who have
ch
ronic watery diarrhea of unknown etiology.
Aims:Prevalence of microscopic colitis in patients with chronic watery diarrhea and
have endoscopically normal colon .
Materials and Methods:We prospectively enrolled 84 patients reviewed in
ALASSAD and TISHREEN HOSPITALS between March 2015 until June 2016 .These
patients were having watery diarrhea more than 3 times a day for more 4 weeks. Atotal 84
patients were enrolled for a total colonoscopy until terminal ileum . Two biopsies were
obtained from all colonic segments and terminal ileum for diagnosed of microscopic
colitis. On histopathologic examination, criteria for lymphocytic colitis (intraepithelial
lymphocyte ≥ 20 per 100 surface epithelial cells, change in surface epithelium,
mononuclear infiltration of the lamina propria) and collagenous colitis (subepithelial
collagen band thickness ≥ 10 μm) were explored.
Results:Microscopic colitis was diagnosed in 33 (39%)patients {22lymphocytic
colitis,11collagenous colitis} . Female/Male: 15/18, mean age at diagnosis of microscopic
colitis : 37 year, range: 20-69, the median duration of diarrhea: 9.5 monthes , the median
number of bowel movements per day:5 times .And the common symptoms are:
abdominal pain and flatulence.
Conclusion :Biopsy of Syrian patients with the diagnosis of chronic watery diarrhea
of unknown etiology and normal colonoscopic findings will reveal microscopic colitis in
approximately 39% of the patients. Lymphocytic colitis is two times more frequent than
collagenous colitis in these patients.
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