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  • Author: Aleksandar Đorđević x
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Aleksandar Đorđević, Mirko Mikić, Jelena Stanišić and Filip Đorđević

Summary

Background/Aim: Implant treatment expands extensively the possibilities of prosthetic treatment, which provide benefits, bigger comfort as well as general improvement of the patient’s life quality. In cases with no possibility of implantation, it is possible to improve conditions by using modern methods for bone tissue repair. One of factors important for the long-term success is proper oral hygiene, as well as raising awareness of its importance to patients. The aim of the paper is to present a patient rehabilitated with multiple implants and followed-up for a five-year period, and to point out the importance of raising patient’s awareness and motivation in order to preserve the results of the treatment.

Case Report: A 31-year-old patient was admitted to the oral surgery clinic for rehabilitation of a poor oral health status. After taking history, clinical examination and additional analysis, the following treatment plan was suggested: to remove impacted upper canines and to put an implant supported by fixed prosthesis in the upper jaw, to make two implants supported by bridges laterally and one dental supported by bridge in the inter-canine sector in the lower jaw. The treatment was carried out in several stages that involved extraction of residual roots and impacted teeth, augmentation of bone defects with bone substitutes and bio-absorbable membranes, placing implant, and prosthetic rehabilitation. By verbal communication with the patient, we pointed out the importance of proper oral hygiene and regular check-ups. The five year follow-up showed the absence of factors that could adversely affect the success of the treatment, and the patient was still highly motivated to maintain proper oral hygiene.

Conclusions: It is possible to achieve predictable results in complex cases by using a multiphase prosthetic treatment supported by implants. Concerning a long-term success, motivation, proper information and patient’s willingness to cooperate play an important role.

Open access

Ivana Vukašinović, Dragana Todorović, Aleksandar Đorđević, Miloš B. Rajković and Vladimir B. Pavlović

Abstract

This is a preliminary study of the depth distribution of 137Cs radionuclides in cultivated anthrosol soil of a 15-year old peach tree plantation at the experimental field “Radmilovac” near Belgrade. Before planting, the soil was ploughed at the depth of 1 m. The soil had not been annually ploughed, irrigated and treated with mineral fertilizers for three years before sampling. Activity concentration for 137Cs ranged from 1.8 Bq kg-1 to 35 Bq kg-1. Along the soil depth it varied highly, reaching as high a total variation coefficient as 83 %. Radiocaesium distribution patterns depended on the extent of soil mixing in the plough layer, as it was mechanically transferred from the surface to the lower soil layers during cultivation. 137Cs was associated with humus content and fixation to clay fractions in the soil. Our results single out soil’s hygroscopic water as a valuable parameter for 137Cs behaviour that could be used commonly if the measurement is standardised.

Open access

Aleksandar Đorđević, Bojan Zečević and Branislava Hristov Stančić

Abstract

Hotels offer different types of services which have different impacts on the users’ satisfaction and have an influence in various extents on decision making, when it comes to the selection of hotels. As a part of research, empirical analysis based on the importance of different services which hotels provide, was conducted. The idea of research is to determine the importance of different types of services for users. The survey was conducted on a sample of 850 respondents in Serbia. The study used AHP methodology which is used in the decisionmaking process analysis and is suitable for studies defining the rank of relevance of individual elements. The obtained results presented in the study provide information such as, what services offered by hotels have the greatest importance for users. Based on the obtained results in empirical research, and by applying cluster analysis, two different segments of hotel guests are identified based on the preferred services. Segments are statistically different and can represent various targets in the hotel business policy.