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Search Results: 1 - 10 of 1235 matches for " Jovanovi?-Medojevi? Milica "
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Primary and secondary dentine thickness at the apical foramen of the mesial and distal root of the lower first permanent molar
Stomatolo?ki Glasnik Srbije , 2009, DOI: 10.2298/sgs0901023j
Abstract: Introduction Knowledge of the complexity of the root canal system in lower first molars and particularly the apical part of the root affects significantly the realization and success of the endodontic procedure. Aim The aim of this paper was to determine the thickness of the primary and secondary dentine around the main foramen of the mesial and distal root of the lower first permanent molar in teeth of various ages. Material and Method Fifty extracted lower first molars of both male and female patients extracted for various reasons were used in the study. All teeth were allocated to three age groups: under 25 years old (15 teeth), between 26 and 50 (20 teeth) and over 51 years old (15 teeth). After access cavity preparation, canal orifices were enlarged and root canals were explored using hand K-files #10. Using a diamond disc, the root tip was then cut off in the area of the apical foramen. Dentine thickness was determined using a complex configuration comprising of several devices which were interconnected by software. These included a polarised microscope (Leica DMLSP), a digital camera (Leica DC300) and a scanner. Results The results showed that the greatest mean thickness of the primary dentine was in the mesial root of the first lower molar in the first age group (0.177 mm), followed by the third (0.145 mm) whilst the least mean thickness was observed in the second age group (0.141 mm). In the distal root, the mean thickness of the primary dentine was in the second (0.175 mm), then the first (0.138 mm) and finally the third group (0.100 mm). The mean thickness of the secondary dentine in the mesial root was observed in the second group (1.25 mm), followed by the third (1.11 mm) whilst the least mean thickness was found in the first age group (0.95 mm). The mean thickness of the secondary dentine in the distal root was observed in the second group (1.26 mm), then the third (1.18 mm) whilst the least mean thickness was found in the first age group (0.99 mm). Conclusion The obtained results suggested that the mean thickness of the primary dentine in the mesial and distal roots was comparable. For both mesial and distal roots, the greatest mean thickness of the secondary dentine was observed in the second age group.
Application of screw-retained and cement-retained implant supported fixed restorations: A case report
Medojevi? Aleksandar,Jovanovi?-MedojeviMilica,Nejkovi? ?or?e
Stomatolo?ki Glasnik Srbije , 2012, DOI: 10.2298/sgs1201051m
Abstract: Implantology has become an important therapeutic procedure that allows complete aesthetic and functional rehabilitation of the oro-facial system in edentulous patients. Implant supported prosthetic restorations can be fixed in two ways, by cement or screws. Both techniques have advantages and disadvantages and their selection depend on situation in patient’s mouth. The aim of this study was to describe complete process of prosthetic rehabilitation in an edentulous patient, from pre-implant preparation, through implant placement and fixation of final restoration on implants. In this case report, one ceramo-metal bridge was fixed by screws in the lower jaw while the other one was fixed using glass-ionomer cement in the upper jaw. After bone augmentation and time necessary for its osseointegration (6 to 8 months), 16 implants were placed in both jaws. Eight weeks after the implant placement, final prosthetic rehabilitation was achieved by cementation of one ceramo-metal bridge in the upper jaw using glass ionomer cement and fixation of the second bridge with screws in the lower jaw. To achieve successful implant supported prosthetic rehabilitation, the treatment protocol must be followed from the beginning to the end of the therapy.
The distance of the main and auxiliary openings from the top of medial and distal root of the first lower permanent molar
Jovanovi?-MedojeviMilica,?ivkovi? Slavoljub
Stomatolo?ki Glasnik Srbije , 2005, DOI: 10.2298/sgs0503143j
Abstract: The main prerequisite for a successful treatment of pulp disease in apex periodontium is knowledge of morphological characteristics of root canal system, especially one third of his apex. The aim of this work was to define the exact distance of the main and auxiliary openings from the top of medial and distal roots of the first lower permanent molars. Methods: as a research material it was used a hundred extracted first lower molars of the patients of both gender, divided into three age groups. The analysis of the one third of apex was done with the help of binocular magnifying glass and digital roentgenography analysis half of the samples, which were filed with capillary contrast. Results: The results obtained showed that the longest average distance of the main opening from the top of medial root was 0.84mm, and the shortest was 0.61mm; while for the distal root the longest average distance was 0.89mm, and the shortest was 0.62mm. Maximum distance of the auxiliary openings from the top of medial root in the first group was 3.5mm, and the maximum distance of the auxiliary openings from the top of distal root was 2, 5 mm. The results obtained with digital rentgenography showed that the longest average distance of the main opening from the top of medial root was the one noticed in the second age group (0.91mm) then the one from the first group (0,83), and the shortest one in the third age group (0,71mm); as for the distal root: the longest average distance of the main opening from the top of the root was noticed in the third age group (0,95mm) then in the first (0,90mm) and than shortest in the second age group (0,89mm). Conclusion: The distance of the main and auxiliary openings from the top of medial and distal root of the first lower molar varies in the range from 0 to 3,5mm and it depends on the tooth age. .
Localisation of main and ancillary foramina within the mesial and distal roots of the first lower molars
Jovanovi?-MedojeviMilica,?ivkovi? Slavoljub
Srpski Arhiv za Celokupno Lekarstvo , 2005, DOI: 10.2298/sarh0512476j
Abstract: Introduction. Understanding the morphology of the root canal system, and especially its apical third, represents the basic precondition for the successful treatment of diseased pulp and the apical endodontium. Aim. The aim of this study was to precisely locate the main and ancillary foramina in the mesial and distal first lower molars. Method. One hundred extracted first lower molars, originating from persons of both sexes and three different age groups, were used in the study. Results. The analysis of the sampled molars’ apical third was carried out using a binocular magnifier and a digital X-ray scanner (Trophy). The results showed that the main mesial and distal root foramina were located mostly on the distal surface. The ancillary mesial and distal root foramina were located at the lingual end, in most cases. Statistical analysis demonstrated the congruence of results achieved using the binocular magnifier and digital x-ray in 100% of cases if the main foramen is located on the very top of the mesial root (χ2 =17.23; p<0.001), and in 92.9% of cases if the main foramen is localised on the very top of the distal root of the first lower molar (χ2 =12.07; p<0.001). Conclusion. The most common localisation of the main foramina for all age categories and in both mesial and distal roots is on the distal surface of the root. The greatest number of ancillary foramina was observed in the youngest age category, while they were localised most often on the lingual side of the mesial and distal root.
Dental status of institutionalized persons with special needs who live in Special institution “Srce u jabuci” in Pancevo
Savi?-Stankovi? Tatjana,Jovanovi?-MedojeviMilica,?ivkovi? Slavoljub
Stomatolo?ki Glasnik Srbije , 2011, DOI: 10.2298/sgs1101016s
Abstract: Introduction. Dental status of most people with special needs is not satisfactory. Many of them are edentulous or toothless, with acute extensive caries lesions present, high DMFT index and severe periodontal disease. The objective of this study was to examine the dental status of mentally impaired persons who live in the special institution “Srce u jabuci” in Pancevo. Material and Methods. Clinical examination was performed on 114 institutionalized patients (68 male and 46 female), age 22 to 71 years. Patients were divided in two groups; the first group consisted of 71 persons who had a moderate mental disorder (F71), while the second group included 43 respondents with severe mental retardation (F72). Oral examination revealed: the number of present teeth, caries lesions, the presence of restorations, the number of extracted teeth, the presence of residual roots, fractures and the presence and number of fixed restorations. Results. The mean DMFT of total examined teeth was 20.33±7.63. The greatest percentage found for extracted teeth (63.76%): in the first group 63.23%, and in the second 64.06%. The percentage of teeth that had caries lesions of all examined teeth was 33.48%, while the lowest percentage was for restored teeth (2.76%). In majority of examined people, initial caries, deep caries, or tooth with the exposed pulp (K1 - 51.74% K2 - 40.35%, K3 - 51.75%) were not found. A high percentage of examined people had more than 10 extracted teeth (52.63%). Most of them did not have any restoration in the mouth (81%) and only three persons had fixed denture. Conclusion. Dental status of institutionalized mentally impaired persons showed high prevalence of extracted teeth, significant presence of carious lesions and small percentage of restored teeth with inadequate oral hygiene.
A method for evaluating the degree of housing unit flexibility in multi-family housing
?ivkovi? Milica,Jovanovi? Goran
Facta Universitatis Series : Architecture and Civil Engineering , 2012, DOI: 10.2298/fuace1201017z
Abstract: The flexibility of housing unit is achieved through a complex design process which includes an analysis of influencing factors of flexibility, their potentials and limitations for the purpose of improvement of residential space organization. This paper explains the proposed evaluation method of internal flexibility of housing units in multifamily housing which may be accepted as a general model. The presented method is based on the elements of multicriteria analysis, where the object of evaluation is assessed through a number of physical criteria that are directly related to the concept of flexibility. The applied methodology aims to determine the best combination of criteria parameters, on the base of which further guidelines in flexible housing design are given. [Projekat Ministarstva nauke Republike Srbije, br. TR36042: Optimization of architectural and urban planning and design in function of sustainable development in Serbia]
Selection of building materials based upon ecological characteristics: priorities in function of environmental protection
Popovi? JovanoviMilica,Kosanovi? Saja
Spatium , 2009, DOI: 10.2298/spat0920023p
Abstract: Numerous scientific researches show that the activities connected with building materials produce significant negative environmental effects. Observed from the point of architecture, the use of building materials is found to be one of the critical factors of environmental pollution and degradation. The purpose of introducing architectural interventions, including proper selection, is the reduction of the negative environmental impact of building materials. The aim of this paper is to define, from the ecological aspect, basic principles for the selection of building materials. First, principles were defined through the all - inclusive analysis of every phase in the life cycle of building materials. Summing categories: embodied energy and embodied CO2 are discussed afterwards. In the order to simplify the procedure of arriving at a decision, priorities in selection were emphasized in every separate segment of this paper. The selection of building materials with reduced negative environmental impact (ecologically correct building materials) is one of the key decisions in the process of designing ecologically correct buildings.
Oxidative Stress - Clinical Diagnostic Significance
Mirjana uki , Milica Ninkovi , Marina Jovanovi
Journal of Medical Biochemistry , 2008, DOI: 10.2478/v10011-008-0024-1
Abstract: Elevated free radical production and/or insufficient antioxidative defense results in cellular oxidant stress responses. Sustained and/or intense oxidative insults can overcome cell defenses resulting in accumulated damage to macromolecules, leading to loss of cell function, membrane damage, and ultimately to cell death. Oxidative stress (OS) can result from conditions including excessive physical stress, exposure to environmental pollution and xenobiotics, and smoking. Oxidative stress, as a pathophysiological mechanism, has been linked to numerous pathologies, poisonings, and the ageing process. Reactive oxygen species and reactive nitrogen species, endogenously or exogenously produced, can readily attack all classes of macromolecules (proteins, DNA, unsaturated fatty acid). The disrupted oxidative-reductive milieu proceeds via lipid peroxidation, altered antioxidative enzyme activities and depletion of non-enzymatic endogenous antioxidants, several of which can de detected in the pre-symptomatic phase of many diseases. Therefore, they could represent markers of altered metabolic and physiological homeostasis. Accordingly, from the point of view of routine clinical-diagnostic practice, it would be valuable to routinely analyze OS status parameters to earlier recognize potential disease states and provide the basis for preventative advance treatment with appropriate medicines.
Recent information on nutritive values of maize silage and its importance in beef cattle feeding
Jovanovi? Rade,Jovin Predrag,Radosavljevi? Milica,Jovanovi? Sne?ana
Veterinarski Glasnik , 2003, DOI: 10.2298/vetgl0304113j
Abstract: The study presents the latest scientific accomplishments in selection of silage hybrids with a special regard to digestibility as a quality parameter of the maize plant. The most important quality parameters, necessary in silage maize hybrid selection with the aim of completely defining their nutritive values, are presented in the case of the most demanded MRI hybrids of all maturity groups and encompass the following: the whole plant DM yield, the share of ears in DM yield, NDF, ADF and ADL content, and especially in vitro DM digestibility according to the Tilley and Terry method. Hybrids can be compared by the use of the exact values for the stated criteria and at the same time it is possible to make actual recommendations for certain production. The importance of the whole maize plant silage is manifested in beef cattle feeding, as the use of 3-12 kg silage day-1 with the appropriate feed concentrate significantly contributes to the more economic production of beef for which the demand in our country is realistic.
A genetic base of utilisation of maize cob as a valuable naturally renewable raw material
Bo?ovi? Irina,Radosavljevi? Milica,?ili? Sla?ana,Jovanovi? Rade
Genetika , 2004, DOI: 10.2298/gensr0403245b
Abstract: The original technological method of the maize cob processing has been developed at the Maize Research Institute, Zemun Polje, by which lignocellulose granules of different particle sizes are produced from the cob. Different chemical composition and physical and chemical properties of these fractions, and especially a great capacity of binding liquids particularly oil and water determine, their usage as degreasing and drying means. Due to their great hardness and abrasive capacity, products made from ground cobs are usable for polishing in the metal processing industry, while the composition of certain compounds (pento-san) are of a particular importance in the chemical industry for the pro duction of furfural and its derivates. As these products are inert, of neutral pH and free of heavy metals they are used as organic carriers in the pro duction of pesticides and agro-chemicals, as well as, in cosmetics and the pharmaceutical industry.
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