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Background and Objective: Trauma is the most common cause of death in all individuals between 1 and 44 years and the third most common cause of death regardless of age. The abdomen is the third most commonly injured region of the body. Some intra abdominal organ injured more than others, related to mechanism of injury, size and location of organ in abdominal cavity. This study was carried out to determine the prevalence of intra abdominal injuries due to penetrating trauma. Materials and Methods: This retrospective descriptive study was done on 114 patients admitted to 5 Azar hospital in Gorgan, Iran due to penetrating abdominal trauma during 2002-07. Gender, age, type of injury causes of trauma and hospitlalization period were obtained form patients files. Results: 92.1% of patients were male. The mean age of subjects was 24.8 years (9-70 years) with highest frequency between 20-24 years. Two (1.8%) deaths directly related to abdominal stab wounds related to hemorrhagic shock. The most common cause of penetrating abdominal injury was knife wound (78.9%). The mean time spent in hospital was 4.6±2.8 days. In 53 patients, cause of trauma were either related to pentration into peritoneum or passing through in. Small intestine injuries (14 %), rupture of diaphragm and concurrent lung injuries (7%) were the common damage organs. Conclusion: This study showed that the knife was the main cause of abdominal penetrate trauma and peritoneum was the most common damage tissue.

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Background and Objective: Impacted molars teeth, especially third molar, are important in most branches of medical sciences. The angular position of molar teeth is in side effects and therapeutic regiment. This study was conducted to determine the angle of the impacted mandibular third molars. Materials and Methods: This descriptive study was carried out on 429 patients (269 men and 160 women) selected for surgery on impacted mandibular third molar in the oral and maxillofacial surgery clinic in Gorgan, Iran during 2010-11. Pre-operative diagnosis was done by physical examination and OPG radiography. Demographic characterstics including age, gender, ethnicity, impaction angle were recorded for each subject. Data were analyzed using SPSS-16, independent t-test and chi-square test. Results: Totally, 480 impacted third molars were studied. Mean age of patients was 26.06±6.21 years. Impaction of the third molar was more prevalent among men (62.7%) than women (38.30%). Impacted mandibular third molar of 189 people (44.1%) were in left side in 200 people (46.6%) were in right side and in 40 people (9.3%) were bilateral. According to impaction angle, mesioangular (41.7%) and distoangular (3.5%) types had the highest and the lowest frequency, respectively. In bilateral cases, the mesioangular-mesioangular type (48.8%) was the most prevalent. The mesioangular type was the most prevalent in all ethnic groups. The most prevalent angular position of the impacted third molar was the mesioangular type in both sexes. Conclusion: This study showed that the most prevalent angular position of impacted mandibular third molar is the mesioangular type.

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Background and Objective: Otalgia is a complaint triggered from either ear disorders or adjacent structures due to common innervations between ear and adjust organs. This study was done to explore the causes of primary otalgia. Materials and Methods: This descriptive study was done on 770 patients with otalgia in Gorgan, Iran during 2009-10. After clinical examination age, gender, patient complaint and signs were recorded for each patient. Results: 668 patients (86.8%) had primary otalgia including 39.9% left, 41.3% right and 18.8% bilaterally. 63.9% were female and 36.1% were males. External otitis was the most common causes of primary otalgia with 64.8%. Other causes consist of acute otitis media (14.5%), serumen (14.1%), chronic otitis media (5.8%), foreign body (4%) and trauma (3%), respectively. Conclusion: The most common cause of primary otalgia was external otitis.