ABSTRACT
Background: although it is one of the most toxic nonradioactive elements, mercury is widely used in dental amalgam. Mercury is a toxic element which can damage various organs such as central nervous system, renal, respiratory and hematologic systems. The adverse health impacts associated to exposure to some common sources of electromagnetic fields including laptop computers, mobile phones, MRI and mobile phone jammers have been evaluated by our laboratory in our previous investigations. In this study, we aimed to evaluate the effect of X ray exposure on microleakage of amalgam restoration
Materials and Methods: standardized class V cavities were prepared on the buccal surfaces of 46 non-carious freshly extracted human premolars. The teeth were randomly divided into experimental and control groups. Experimental group were exposed to X-ray using an intraoral radiography machine at 60 kVp, 0.1 s, 7 mA with 2.5 mm Al total filtration. The absorbed dose was 245.0 +/- 0.5 microGy. All specimens were placed in 2 % basic fuchsin solution for 24 hours. Then the specimens were sectioned and microleakage was assessed according to dye penetration using a stereomicroscope. Statistical analysis was performed with the Mann-Whitney U-test
Results: microleakage was significantly higher in the X-ray exposed teeth compared to those of the non-irradiated samples
Conclusion: the results of the present study suggest that X-ray exposure increased microleakage of amalgam restorations
ABSTRACT
Mucocele and traumatic neuroma are two lesions related to the traumatic events; however there is only one reported case in which these two entities were perceived simultaneously. The current study reported a 21-year-old man who complained of painless recurrent swelling, accompanied by paresthesia on his left lower labial mucosa. He had a previous history of similar lesion and had been treated with surgery and cauterization last year. The primary clinical impression was a recurrent mucocele. Microscopic surveys displayed a traumatic neuroma in the vicinity of a mucocele which seems to be arising from the previous surgical treatment
ABSTRACT
Cementoblastoma is a rare benign neoplasm of cementoblastic origin which is usually represented with marked swelling and severe pain. In this article, the mechanism of pain generation and definite diagnosis of a cementoblastoma related to the first mandibular molar with a long-lasting dull pain have been discussed
ABSTRACT
Eosinophilic granuloma [EG] is the mildest and localized form of a group of diseases named Histiocytosis X. It is a destructive osseous lesion characterized by presence of a vast number of eosinophils and histiocytes. It has a neoplastic nature especially in the chronic forms. Based on the site of the lesion, three types are elucidated: 1- intraosseous 2- alveolar 3- mixed. In the last two types, extensive alveolar involvement and loosening of the teeth clinically may resemble aggressive periodontitis [AP]. We report a case of EG which was initially diagnosed and treated as AP. The rapid progress, diagnostic problems, etiologic factors and the consequences of late diagnosis and treatment of eosinophilic granuloma are discussed. This explicates why dentists need to know the differential diagnosis of EG with AP for early diagnosis and treatment