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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Journal of Dentistry, Shiraz University of Medical Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: Dental Scanners,Precision,Trueness
- چکیده:
- چکیده انگلیسی: Statement of the Problem: The mechanism of operation of dental scanners are based on different technologies. Considering these differences, there are many types of scanners available in the market.
Purpose: This in-vitro study aimed to compare the accuracy (precision and trueness) of seven commonly used dental scanners.
Materials and Method: In this in-vitro, experimental study, accuracy of 7 common extra oral scanners (Sirona ineos inLab, Sirona X5, Dentium, Imes Icore 350I, amann girrbach, 3shape D700, 3shape E3) were evaluated. Each of scanners performed 7 scans of implant abutment of SIC (SIC MAX.GH1). Data from each scanner were then compared to data received from 3Shape Trios intra oral scanner, as a reference. For evaluating the accuracy of each scanner, trueness and precision was evaluated. Collected data were analyzed using Kruskal Wallis and Bonferroni tests via SPSS version 22.
Results: Descriptive statistics showed the best trueness was for 3Shape E3 scanner with the average of 35.37 µm and the worst referred to Sirona x5 scanner with the average of 51.75 µm. Furthermore, the best precision refers to 3Shape E3 scanner with the average of 35.34, while the lowest precision was noted in 3Shape D700. The scanners had significant differences with each other in terms of trueness and precision (p < 0.05).
Conclusion: In this study the extra oral scanner, 3shape E3, had the best trueness and precision. The lowest amount of trueness among the studied scanners was for the extra oral scanner, Sirona x5, and the lowest precision was for scanner 3shape D700.- انتشار مقاله: 15-07-1398
- نویسندگان: Fariborz Vafaee,Farnaz Firouz,Mahsa Mohajeri,Reza Hashemi,Somayeh Ghorbani Gholiabad
- مشاهده
- جایگاه : پژوهشی
- مجله: Asian Pacific Journal of Cancer Prevention
- نوع مقاله: Journal Article
- کلمات کلیدی: children,Parents,risk factors,Acute Lymphoblastic Leukemia
- چکیده:
- چکیده انگلیسی: Background: Acute lymphoblastic leukemia (ALL) is the most common malignancy in children. Different
environmental factors might be effective in the occurrence of this malignancy during childhood. The aim of this study
was to find environmental risk factors in childhood ALL in Hamadan, Iran. Methods: This case-control study was
done in 2015-2018 on 125 children younger than 15 years of age suffering from ALL. Patients were matched with
130 controls with respect to age, gender, and residence location. The identification of risk factors for ALL was sought
based on the comparison of studied variables between case and control individuals. Results: A statistically significant
increased risk for ALL was found with regard to type of delivery (OR: 0.43, 95% CI: 0.20 - 0.92, p˂0.02), childcare
(OR: 4.58, 95% CI: 0.95 - 22.20, p˂0.04), birth weight (OR: 1.44, 95% CI: 1.53 - 2.21, p˂0.006), father’s education
level (OR: 2.67, 95% CI: 1.10 - 6.45, p˂0.02), and father’s job (OR: 0.2 95% CI: 0.08 - 0.51, p˂0.001). Also observed
were increased odds for ALL regarding male gender, mother’s high education level, mother’s freelance job, and medium
or high family income. No association with ALL incidence was observed for age, gender, breastfeeding, mother’s age
at pregnancy, malignancy in first- or second-degree relatives, or mother’s use of hair dye during pregnancy (p> 0.05).
Conclusion: This study showed that father’s education level, father’s job, delivery type, birth weight, and childcare
can play a role in the incidence of childhood ALL.- انتشار مقاله: 07-03-1398
- نویسندگان: Hassan Rafieemehr,Fereshteh Calhor,Hossein Esfahani,Somayeh Ghorbani Gholiabad
- مشاهده