Dental status of adults in the eastern region of Republika Srpska

Introduction. A significant change in frequency and characteristics of oral diseases in developed countries has been detected recently. The aim of this study was to determine the dental status of teeth in adults in the eastern region of Republika Srpska and to determine possible difference in the prevalence of dental diseases according to the demographic characteristics. Materials and Methods. The study included 182 respondents aged 35-44 years and 185 respondents aged 65-74 years, selected randomly from four municipalities in the eastern region of Republika Srpska. Dental examinations were conducted according to the standards and criteria developed by the World Health Organization. Dental status, determined by DMFT index, was analyzed according to the gender and place of residence (urban/rural). Results. The mean DMFT index was 20.2 in the age group 35-44 years and 28.5 in subjects aged 65-74 years. The dominant component of the index in both studied groups was the number of extracted teeth. For subjects aged 65-74 years from rural areas a significantly higher DMFT index as compared to the residents in urban regions (p<0.05) was reported. Females had fewer caries lesions (p<0.05) and greater number of restored (p<0.01) teeth as compared to male respondents in the age group 35-44 years. On the other hand, in the older population study group, females had lower number of restored teeth (p<0.01), higher number of missing teeth (p<0.01) and higher DMFT index (p<0.2001) as compared to males. Conclusion. The present results indicate that the prevalence of caries in adults in the eastern region of Republika Srpska is very high

THE FACTOR VALIDITY AND RELIABILITY OF TESTS FOR THE EVALUATION OF JUMPING FREQUENCY

With the aim of studying the factor validity of the newly-constructed tests for the evaluation of jumping frequency, an experimental study was carried out on a sample of 25 volleyball players aged 20.20+3.16. To evaluate jumping frequency, four tests of single leg jump tests were applied (jumping on the left and right leg back and forth, lateral left and right leg jumps) and three double leg jump tests (double leg quick lateral bounds, lateral bounds and scissor jumps), as well as two tests for the evaluation of movement frequency, whose factor validity was already established (hand tapping and foot tapping). The results obtained from the participants in these tests had normal distribution and had satisfactory sensitivity. Using an Item analysis, a satisfactory reliability of all the applied tests of single and double leg jumps for the assessment of jumping frequency in the range of 0.92 to 0.81 was determined, and the conclusion drawn that the greatest coefficient of reliability (Cronbach alpha) was found for the Left leg jumps back and forth test, and the smallest for Double leg quick lateral bounds test. Using a factor analysis (the principal component method), the factor validity of the tests was determined, with coefficients ranging from -0,55 to -0,90, where the greatest projection on the first principal component originates from the left leg jumps back and forth, and the smallest from the double leg jumps to the side. On the basis of the results, we can conclude that all the tests of single and double leg jumps have satisfactory factor validity in the space of simple movement frequency for this sample of participants, and that they actually do measure jumping frequency

Uticaj različitih oblika kalcijum-hidroksida i hlorheksidina kao interseansnih medikamenata na ishod endodontskog lečenja zuba sa hroničnim periapeksnim lezijama

Introduction/Objective The aim of this study was to determine clinical and radiographic periapical healing of teeth with apical periodontitis treated with different formulations of calcium hydroxide (CH) - paste (CH-paste) and gutta-percha points (CH-GP) - as well as those of chlorhexidine (CHX) - gel (CHXgel) and gutta-percha points (CHX-GP) -12 months after therapy. Methods Eighty patients with chronic apical periodontitis were randomly allocated to four treatment groups according to the intracanal medicament used: CH-paste, CH-GP, CHX-gel, and CHX-GP group. Seventy-eight patients were analyzed clinically and radiographically 12 months postoperatively. The periapical index (PAI) was used for the radiographic evaluation of treatment. Results Overall outcome was classified according to radiographic evaluation only, since clinical success was observed in all the patients. In all the groups, significant reduction in PAI scores was observed (p lt 0.001). The proportions of healed teeth (PAI ≤ 2) were 73.7%, 60%, 68.4%, and 65% in CH-paste, CH-GP, CHX-gel and CHX-GP group, respectively, with no significant differences between the groups. Conclusion The results suggest that there are no differences between investigated CH- and CHX-delivery systems regarding treatment outcome of teeth with apical periodontitis.Uvod/Cilj Cilj ovog istraživanja je bio da se ispita klinički i radiografski ishod lečenja zuba sa apeksnim periodontitisom 12 meseci posle završene terapije i primene različitih oblika kalcijum-hidroksida (KH): pasta (KH-pasta) i gutaperka poeni (KH-GP) i hlorheksidina (HH): gel (HH-gel) i gutaperka poeni (HH-GP). Metode Randomizovano je 80 ispitanika sa hroničnim periapeksnim lezijama u četiri grupe na osnovu vrste korišćenog interseansnog medikamenta: KH-pasta, KH-GP, HH-gel i HH-GP. Dvanaest meseci posle završenog lečenja pregledano je 78 ispitanika i urađeni su retroalveolarni snimci. Za procenu radiografskog uspeha lečenja korišćen je periapikalni indeks (PI). Rezultati Ishod lečenja je klasifikovan na osnovu radiološkog nalaza jer je kod svih ispitanika zabeležen klinički uspeh lečenja. U svim ispitivanim grupama je zabeleženo značajno smanjenje vrednosti PI (p lt 0,001). Izlečenje (PI ≤ 2) uočeno je kod 73,3% zuba u grupi KH-pasta, 60% u KH-GP grupi, 68,4% u grupi HH-gel i kod 65% zuba u grupi HH-GP, pri čemu razlike između grupa nisu bile statistički značajne. Zaključak Rezultati ovog istraživanja pokazuju da ne postoji razlika u ishodu lečenja zuba sa apeksnim periodontitisom posle primene ispitivanih oblika KH i HH

Efekti vertikalnog i horizontalnog modela pliometrijskog treninga na razvoj eksplozivne snage

The purpose of this experimental study was to determine the effects of vertical and horizontal models of plyometric training explosive strength development in cadet volleyball cadets. Forty -four participants were randomly assigned to one of two experimental groups: vertical plyometric (Е1; n=20; BH=185.5 ± 7.02 cm; BM=71.1 ± 7.44 kg), horizontal plyometric (Е2; n=24; BH=183.8 ± 7.79 cm; BM=68.7 ± 8.69 kg). The training programs lasted 6 weeks and it consisted of two training sessions per week. All subjects were tested for each of the following jumps: squat jump (SJ), countermovement jump (CMJ), drop jump (DJ) and continous jumps (CJ). After a 6-week plyometric training some of the tested parameters of SJ increased in the vertical plyometrics group (Hmax 13.7%; Fmax 3.4%; Vmax 6.2%; IMPcon 4.1%; Pmax_con 10.2%), as well as in the horizontal plyometrics group (Hmax12.2%; Fmax 5.1%; Fmax/TT 6.0%; Vmax 5.9%; IMPcon 3.7%; Pmax_con 9.5%). Some of the tested parameters of CMJ increased in the vertical plyometrics group (Hmax 9.8%; Vmax 1.5%; IMPcon 7.2%; IMPuk 2.0%; Pmax_con 2,8%), as well as in the horizontal plyometric group (Hmax 10.1%; Vmax 3.4%; IMPcon 8.5%; IMPuk 5.0%; Pmax_con 3.9%), while lower values compared to the initial measurement were recorded in Fmax/TМ (5.2%) in the vertical plyometric group. In DJ some of the tested parameters increased in the vertical plyometric group (Hmax 15.7%; Tcon 14.9%; Vmax 9.9%; IMPcon 14.4%; Pmax_con 10.4%), as well as in the horizontal plyometrics group (Hmax 23.4%; Vmax 10.6%; Pmax_con 11.9%), while lower values compared to the initial measurement were recorded in parameter Pmax_exc (13.3%) in horizontal plyometric group. The CJ parameters showed in the vertical plyometrics group increased (Hmax 8.2%; IMPuk 6.8%; Pmax_uk 4.8%), as well as in the horizontal plyometrics group (Hmax 14.5%; Texc 6.0%; IMPexc 12.2%; IMPuk 7.5%; Pmax_exc 13.8; Pmax_uk 6.2%). The results of this thesis showed that there were no significant differences in the effects of different models of plyometric program in tested parameters, except for CMJ, in favor of horizontal plyometric group. The results suggest that both training programs were effective in the development of various parameters of jumping ability. In practice exercises from these plyometric training program should be combined due to a greater effect on certain parameters of jumps

Nove klase funkcija za sintezu dvokanalne hibridne banke filtara

This PhD discusses the research related to the approximation and implementation of the twochannel hybrid filter banks. Special attention is paid to the analogue part, i.e. analysis part of the hybrid filter banks. Two approximations of the filter bank pair for analysis have been proposed. The first approximation of the transfer function of the low-pass filter is based on the simple adaptation of the orthogonal Jacobi polynomials in order to obtain the Pseudo-Jacobian polynomials. In relation to other known approximations, the Pseudo-Jacobian polynomial one has two prime parameters, which can adjust the characteristics of the filter in wide ranges. This approximation can be successfully applied for the realization of a complementary bank of filters. It is known that recursive double-complementary digital filter banks can be implemented with all-pass filters, and research has shown that double-complementary filter banks can also be realized in the analogue domain. The realization of the proposed filter bank has been done in two steps. In the first step, with the complementary decomposition, the prototype transfer function is obtained by two all-pass filters, while in the second step, by their addition or subtraction, transfer functions of lowpass and highpass filters are obtained. The advantage of such a system is that the same hardware can be used for realization of both low frequency and high frequency transfer functions. Monte Carlo simulation of the realization of a double complementary analog filter pair based on a parallel connection of two analogue all-pass filters showed that all-pass realization is characterized by a small sensitivity of the attenuation characteristics to the component tolerances in the filter pass-band, while the sensitivity in the stop-band is substantially higher compared to the case of a standard cascade realization of the low-pass filter and the high-pass filter. By a suitable selection of the analysis filter bank and the synthesis filter bank, a condition for suppressing the effects arising from the overlapping of the spectrum in banks for analysis and synthesis can be fulfilled. The all-pass complementarity of an analogue filter bank points to the fact that amplitude distortion, which is introduced by the analog bank of the analysis filters, can be completely suppressed, so that the non-linearity of the group delay characteristics is the predominant distortion. In order to achieve a near perfect reconstruction of the signal, a new realization of the group delay corrector was proposed, which makes it possible for the group delay to be constant in a flat sense, i.e. with a number of flatness at the origin. An analysis of the sensitivity has shown that the sensitivity of the correction of the group waveform in the filter pass-band that is proportional to the square of the Q -factor of the pole. In other words, the group delay corrector is very sensitive to the component tolerances

SEM analiza kvaliteta adhezivne veze glasjonomercementnih restauracija

Introduction. Lack of proper adhesion is one of the most common problems in modern restorative dentistry and the main cause of the occurrence of microcracks at the interface between materials and hard dental tissue. The aim of this study was to assess the quality of bond between two types of glass-ionomer cement (GIC) class V restorations and hard dental tissues by SEM. Materials and Methods. This clinical study included 20 intact teeth (premolars and molars) recently extracted for orthodontic reasons in patients of both genders and different ages. Class V cavity with rounded walls was prepared on vestibular and oral surfaces of all teeth (3x2x2 mm). Conventional GIC Fuji II was applied on vestibular surface of teeth whereas on oral surface resin-reinforced glass ionomer Fuji II LC was placed. The bond between fillings and hard dental tissue was assessed by SEM. Results. Both materials showed microcracks, however, microleakage was lower with Fuji II LC than with Fuji II. Microcracks were observed in 65% of cases (13 restorations) restored with GIC Fuji II and 35% (7 fillings) restored with GIC Fuji II LC. The size of microcracks for Fuji II LC was 9 μm while this value for Fuji II was 17 μm. The difference was statistically significant. Conclusion. Better bond between material and hard dental tissue was achieved with the material of new generation, resin modified GIC.Uvod. Nedostatak odgovarajuće adhezivnosti je jedan od najčešćih problema u savremenoj restaurativnoj stomatologiji i glavni uzrok nastanka mikropukotine na spoju materijala i tvrdih zubnih tkiva. Cilj ovog rada je bio da se SEM (skening-elektronska mikroskopija) analizom proveri kvalitet veze dve vrste glasjonomercementnih (GJC) restauracija za tvrda zubna tkiva kod kaviteta V klase. Materijal i metode rada. Kliničko istraživanje je obuhvatilo 20 sveže ekstrahovanih intaktnih zuba (premolari i molari), odstranjenih iz ortodontskih razloga kod pacijenata oba pola i različite starosti. Na svim zubima su sa vestibularne i oralne strane urađene jednopovršinske preparacije V klase adhezivnog tipa sa zaobljenim zidovima kaviteta (dimenzija 3×2×2 mm). Sa vestibularne strane primenjen je klasični GJC Fuji II, a sa oralne smolom ojačani GJC Fuji II LC. Kvalitet veze između ispuna i zubnih tkiva je procenjivan SEM analizom. Rezultati. Dobijeni nalazi su pokazali da je kod oba materijala zabeležena mikropukotina i da je stepen mikrocurenja kod Fuji II LC bio manji nego kod Fuji II. Kod zuba restaurisanih sa GJC Fuji II mikropukotina je uočena u 65% slučajeva (13 ispuna), a kod zuba restaurisanih sa GJC Fuji II LC u 35% slučajeva (sedam ispuna). SEM analizom je utvrđena srednja vrednost mikropukotine za Fuji II LC od 9 µm, dok je ova vrednost za Fuji II bila 17 µm. Razlika je bila statistički značajna. Zaključak. Na osnovu rezultata istraživanja može se zaključiti da je bolji kvalitet veze ostvaren primenom materijala novije generacije, odnosno primenom GJC modifikovanih smolom

SUPRACONDYLAR FRACTURE OF THE HUMERUS IN CHILDREN

Humeral supracondylar fractures are the second most common fractures seen in children and young teenagers (16.6%). They represent 60-70% of all the elbow fractures. The maximum incidence is found between the fifth and seventh year of age, slightly more often in boys and on non-dominant hand. We performed a retrospective study in our clinic which included 105 patients admitted to our facility during the period from January, 2008 to April, 2012. The included patients had humeral supracondylar fracture either type 2 or type 3 (Gartland classification). At the moment of admission the median age was 7.26 years. All the patients were treated during the first 12 hours, with no more than two attempts of closed reposition. Sixteen patients with type 2 fracture were treated by analgosedation, closed reduction followed by cast immobilization. All other patients were treated after induction of general anesthesia. Sixteen patients were treated by percutaneous fixation of the fragments after closed reduction and 73 were treated with open reduction and pinning with different number and positions of „К“ wires. None of the patients had deep tissue infection; four patients had pin site infection. Three patients had cubitus varus deformity, two patients had elbow contracture, five patients had temporary limitation in extension, and one patient had iatrogenic lesion of the ulnar nerve. This makes 14.2% complication rate in our series. All the fractures healed in the expected period (3–4 weeks). Bauman’s angle, carrying angle and functional factor were measured postoperatively. Closed reposition with pinning, using radiographic control, for the dislocated supracondylar humeral fractures is the safest, as well as the least time consuming and cost-effective method. We also suggest treating these fractures within 12 hours and conversion of closed into open reposition in case of lacking crepitations (possibility of interposition of soft tissues between fragments)

Assessment of the effectiveness of low level laser in the treatment of alveolar osteitis

Background/Aim. Alveolar osteitis (AO) is the extraction wound healing disorder with a presence of severe pain. Low level laser therapy stimulates cell metabolism and microcirculation, have has pronounced analgesic, antiedematous and anti-inflammatory effect and speeds up wound healing process. The aim of this study was to present results of clinical research that examined the effectiveness of low level laser in pain relief and healing of extraction wounds with alveolar osteitis in the lower jaw which was formed on the second day after tooth extraction. Methods. The study was conducted on 60 subjects divided into the study and the control group. In both groups extraction wounds were processed in similar way, except that in the study group was applied daily treatment of low level laser with a total of eight sessions of radiation, while in the control group extraction wounds were dressed with zinc oxide eugenol paste, which was changed every 48 hours up to the pain cessation. Measurement of pain intensity was done with a visual analogue scale (VAS) 10 min prior to processing of extraction wounds and daily for the next eight days. Assessment of the effectiveness of low level laser on healing of extraction wounds was performed on the day eight of the treatment. Results. On the day five after beginning of the treatment of extraction wounds with alveolar osteitis in the patients of the study group a lower average value of pain as compared to the control group was registered. This difference was increased within the following days. Extraction wounds healing in the study group was more successful and faster than in the control group. Conclusion. This study suggested that the reduction of pain was more pronounced in the patients with alveolar osteitis whose extraction wounds were subjected to low level laser radiation in comparison to those in which extraction wounds were treated with zinc oxide eugenol paste

Stanje parodoncijuma osoba obolelih od dijabetes melitusa u odnosu na nivo glikoziliranog hemoglobina i oralnu higijenu

Introduction. It has been known that periodontitis is one of the most common oral diseases in patients having diabetes mellitus (DM). The aim of this study was to examine the influence of glycosylated hemoglobin (HbA1c) level and the level of oral hygiene on periodontal status of patients suffering from DM. Material and Methods. The research included 50 people with type 2 DM randomly selected. Based on values of HbA1c, patients were divided into two groups: well controlled DM (HbA1c≤8.5%) and poorly controlled DM (HbA1c>8.5%). Patients with poorly and well controlled DM were further grouped into subgroups depending on the level of oral hygiene. For each patient, during the clinical examination, periodontal parameters were determined: plaque index (PI), sulcus bleeding index (SBI), the level of junctional epithelium (LJE) and periodontal pocket depth (PPD). Results. The results showed that patients with well controlled disease and good oral hygiene had lower values of the examined periodontal parameters (SBI and PPD) then patients with poorly controlled DM and worse oral hygiene (p lt 0.01 for SBI, p lt 0.05 for PPD). Conclusion. The results of this study indicate the important role of oral hygiene for periodontal status of patients with DM.Uvod. Parodontopatija je jedno od najčešćih oboljenja oralne regije kod osoba obolelih od dijabetes melitusa (DM). Cilj ovog istraživanja je bio da se ispita uticaj nivoa glikoziliranog hemoglobina (HbA1c) i stepena oralne higijene na stanje parodoncijuma bolesnika sa DM. Materijal i metode rada. Ispitano je 50 osoba sa DM tip 2 koje su odabrane metodom slučajnog uzorka. Na osnovu vrednosti HbA1c, ispitanici su svrstani u dve grupe: prvu grupu su činili bolesnici koji su dobro kontrolisali DM (HbA1c≤8,5%), a drugu bolesnici s loše kontrolisanim DM (HbA1c>8,5%). Ispitanici dve grupe su dalje podeljeni u podgrupe u zavisnosti od stepena oralne higijene. Svakom bolesniku su prilikom kliničkog pregleda određene vrednosti parodontalnih parametara: plak-indeksa (PI), indeksa krvarenja gingive (IKG), nivoa pripojnog epitela (NPE) i dubine parodontalnog džepa (DPDŽ). Rezultati. Dobijeni rezultati su pokazali da su kod bolesnika sa dobro kontrolisanim oboljenjem i dobrom oralnom higijenom vrednosti ispitivanih parodontalnih parametara (IKG i NPE) niže nego kod bolesnika s loše kontrolisanim DM i lošijom oralnom higijenom (p lt 0,01 za IKG; p lt 0,05 za NPE). Zaključak. Rezultati ovog istraživanja ukazuju na značajnu ulogu oralne higijene na stanje parodoncijuma osoba sa DM

DIFFERENCES IN MOTOR ABILITIES MANIFESTATIONS DEPENDING ON QUANTITATIVE PARAMETERS OF BODY MASS INDEX OF STUDENTS

Motor abilities as the anthropological status segment of a human participate in the implementation of various movement structures, and are an indispensable part of human latent and manifested space. Depending on the type of movement structures depends on their mode of manifestation. Most of them are more or less correlated with other segments of the anthropological area. The most common connection is related to the morphology and dimensions of the individual parameters of the morphological status, for example, Lorentz constitution index, body mass index (BMI), and so on. The current research was conducted on a sample of 40 male students, aged 16 ± 0.5 years from Busovača (BIH) in order to determine possible differences between individuals with different values of BMI. According to the objective of the research was selected the intentional sample of subjects: 20 normal weight students (BMI=20.79±1,79kg/m²) and 20 students with excessive nutritional status (BMI=26.55±0,88kg/m²). For the evaluation of motor abilities were defined tests for the assessment of the balance (flamingo-MFLA), flexibility (reaching in sitting-MFLE). To determine the difference between respondents was applied the module T-test for small independent samples. The results obtained confirm statistically significant differences between normal and over-fed students in the realization of defined motor abilities required a level of significance (p <0.001).  Article visualizations