GALILEAN GEOMETRY OF CORRESPONDING SURFACES TO PRODUCTION MODELS IN ECONOMICS

WOS: 000370529400006In this paper we study the curvature properties of the corresponding surfaces in the Galilean 3-space G(3) to some production models in economics such as the generalized Cobb-Douglas, the generalized ACMS and the Allen production functions. We classify such surfaces of null curvature in G(3)

The effects of a caries-removing get (carisolv) on FM3A cell-line in vitro

Objectives: The aim of this study was to examine the cytotoxic effects of Carisolv on mouse mammary carcinoma cell line (FM3A) at different application times

Effect of folk medicinal plant extract Ankaferd Blood Stopper((R)) in vital primary molar pulpotomy

AIM: To compare the clinical and radiographic success rates of two vital pulpotomy agents: formocresol (FC) and Ankaferd Blood Stopper (R) (ABS), in primary molars during a 12-month follow-up period. STUDY DESIGN: A randomised, single-blind study design was used in a sample of 30 healthy 6-9 year old children with 60 carious primary molars without clinical or radiographic evidence of pulp degeneration. METHODS: The pulpotomy agents were assigned as follows: Group 1 was 1:5 diluted Buckley's formocresol (FC) and Group 2 was ABS. Clinical and radiographic follow-up at 3, 6, and 12 months used the following criteria: pain, swelling, sinus tract, mobility, internal root resorption, and furcation and/or periapical bone destruction. STATISTICS: The data were analysed using Chi-square tests. RESULTS: The clinical and radiographic evaluation at 3 months revealed total success rates of 100% in the FC and ABS groups. Success rates in FC and ABS groups at 6 months were 96.7% and 93.3% respectively. At the 12-month follow-ups, the total success rates in the FC, and ABS groups were 89.3% and 85.7%, respectively. When the groups were compared according to the time intervals, no significant differences were observed between the 3, 6, and 12 month values. The success rates of the materials decreased over time. CONCLUSIONS: FC and ABS were found successful as pulp dressings in primary molars. ABS appears to be an alternative pulpotomy agent but periodical follow-ups must be considered to evaluate long term success rat

Evaluation of oral and systemic manifestations in an amelogenesis imperfecta population

Objectives: The aim of this investigation was to describe the dental and craniofacial. characteristics of patients with amelogenesis imperfecta (Al). Methods: The study group included 43 patients(33 female and 10 male) with a mean age of 11.4 +/- 2.6 years. A panoramic and a cephalometric radiograph were obtained from each of these patients. Clinically Al cases were divided into four main groups according to Witkop. All patients were evaluated for chronological, bone and dental age. The patients who had severe retarded bone age were evaluated for plasma growth hormone(GH) concentrations. Results: Dental and bone ages were retarded with respect to chronological age in five patients. Dental maturity and tooth eruption were not age- appropriate in some of our patients. In type III Al patients a delay in skelatal age was observed. Severe late eruption was seen in 3 patients, severe delay in dental maturity was noted in patients with type IV Al. Dental age was clinically lower in GH-deficient subjects, and skeletal age was consistently more retarded than dental age when compared to chronological age. Anterior open bite was present in both primary and permanent dentitions of 50% of the patients with type I Al, 30.8% of the patients with type II Al, and 60% of type III Al. Conclusion: It is concluded that the primary structure for the classification of Al be based on the mode of inheritance, with the clinical and radiographic appearances (and any other features such as systemic findings) being the secondary discriminators. (C) 2003 Elsevier Ltd. All rights reserved