ABSTRACT
One of the challenges of restoring endodontically treated teeth with fiber reinforced composite [FRC] posts is their debonding from root canal dentin. Different factors such as cement type, effect the post retention. According to the controversies in this regard, this study aimed to evaluate the effect of three luting cements on retention of FRC posts in the root canal. In this in-vitro study 30 selected root canal treated premolar teeth were randomly allocated to three experimental groups. After post space preparation, RTD fiber posts, with 10mm length and 2 mm diameter, were cemented in the canal with one of the following luting agents: zinc phosphate [Harvard], Glass-Ionomer [GC] and resin cement Maxcem [Kerr]. They were then fixed and force was applied using Instron 5500 machine. The Data was subjected to ANOVA for statistical analysis. The observed retention in studied groups was as follows: resin cement 127 +/- 18.5 [MPa], zinc phosphate 102 +/- 29.7 [MPa] and glass-ionomer 51 +/- 14.8 [MPa]. In order to increase the retention of FRC posts, cementation with resin cements is recommended
ABSTRACT
Background and Objective: Self-management is one of the important health problems, which causes economic and health problems. Many cases of self-management were observed in skin diseases. The objective of this study was to determine the prevalence of self-management in skin diseases among teachers in Babol city in educational year of 2000-2001
Methods: This descriptive and cross-sectional study was performed on 337 teachers in Babol city in educational year of 2000-2001. Data was gathered with randomized cluster sampling by questionnaires and analyzed by Chi-square test and SPSS and P<0.05 was considered significant
Findings: From 337 teachers, 181 [53.7%] were female and 156 [46.3%] were male. Self-management was seen in 27 [8.3%] cases that there was not a significant difference between Self-management in skin diseases regarding ages, educational degree, sex, numbers of children and level of teaching. But, prevalence of self-management in single teachers was more than married ones [P=0.02]. In skin problems, 276 [79.2%] teachers referred to dermatologist, 37 [11%] to general practitioners and 6 [1.8%] to school health teachers
Conclusion: Prevalence of self-management in skin problems among Babolian teachers was low. This finding can be considered as a positive point in improving population health education