ABSTRACT
Burns are among the most important accidents related to human health, which receive great attention due to severe complications and high mortality rate. Burn is the fourth leading cause of trauma in the world, and generally divided into three groups, electrical, chemical and thermal. In this a comparison between open and closure dressing in healing and reconstruction of injury was investigated This is a clinical trial study; two hundred burn out patients referred to Motahari hospital were selected and divided into two groups over a period of 16 months from the July 2011 till November 2012.The selected patients had second degree burn with 5.2% extent. Both groups and treated with 1% silver sulfadiazine cream and dressing were made once daily. Duration treatment the healing of each patient was recorded on checklists. Chi-square test and spss were used to analyze the data. Burns from the heat of 170 patients 85%] was greater than the electrical and chemical burns groups. Burn with boiling with 114 cases 57 percent] was the most, compared to electrical and chemical. The mean duration of treatment in open dressing was shorter than closure dressing P <0.001. The results of this study showed that burn with boiling water was the most compared to chemical and electrical. The duration of healing time and hospitalization in open dressing was shorter than closure dressing. It seems to be a preventive program such attention to safety in the home and workplace should be applied
ABSTRACT
Dental caries in children caused by repeatable consumption of sweet product especially at night, that itself mostly depend on economic and cultural background of the society and family. One of the most common diseases of human being is dental caries, which are caused by many factors, such as microorganisms, dieting, passing time, and the host itself. Among the microorganisms Streptococci mutants play the major role in causing dental caries. The aim of this research was to investigate the role of Streptococci mutants in dental caries between two groups of children sensitive and resistance to caries. This was a cross-sectional research, in which 120 children [60 susceptible and 60 resistance] aged between 3 to 5 referred to Tehran University dental school were selected randomly. The selection criteria for the sensitive and resistance dental caries were dmfs > 5 and dmfs < 10 respectively. None of the groups had used any drug or fluoride products before sampling. Saliva of both groups were collected, and transferred to the specific culture media [Mitis Salivarious Agar]. After incubation at 37 Degree°C colonies of S.mutans were counted. There was a significant difference between the number of colony counting [cfu/ml] with age and consumption of repeated sugar product, while. there was no significant difference between [cfu/ml] sex, oral hygiene, and nutrition period during infancy. The results of this study showed that the consumption of sugar product in childhood results in dental carries