Abstract This study was aimed to investigate awareness of periodontitis among undergraduate students at a faculty of medicine in Bosnia and Herzegovina. This cross-sectional study was conducted among undergraduate students of the Faculty of Medicine Foca enrolled in three study programs (Medicine, Nursing, and Special Education and Rehabilitation). Knowledge and awareness of periodontitis were collected using a structured questionnaire. Approximately 58% of students had heard the term periodontitis. Higher percentage of Medicine and Nursing students identified Gum Recession, Bleeding Gums, Tooth Loss and Loose Tooth as common symptoms of periodontitis compared to Special Education and Rehabilitation students. Knowledge of risk factors for periodontitis differed between the groups, with Nursing students showing greater awareness but also incorrect recognizing of several risk factors. About one third of students answered that Diabetes Mellitus is related to periodontitis (32.4%). Significantly lower percentage of Nursing students assessed their knowledge of periodontitis as poor compared to Medicine and Special Education and Rehabilitation students. The findings revealed a lack of adequate knowledge of periodontitis across all the observed study programs. Strengthening periodontal education within undergraduate curricula is essential, particularly considering the established links between periodontal and systemic diseases.

Objective. The aim of this study was to assess oral hygiene habits, as well as awareness and knowledge among undergraduate students at a Faculty of Medicine in Bosnia and Herzegovina. Methods. This cross-sectional study was conducted at the Faculty of Medicine in Foča and included 333 students across three study programs: Medicine (M), Nursing (N), and Special Education and Rehabilitation (SER). The questionnaire was used to obtain demographic information, as well as data on oral hygiene habits and knowledge of oral health. Results. The largest proportion of students (56.2%) brush their teeth twice daily. A higher percentage of N and SER students brush their teeth longer than M students (p=0.004). Students most often replace their toothbrushes every 3 months or sooner (76.3%); 58.9% regularly visit a dentist; and 61% report no oral health problems. Only 14.4% of students believe that dental plaque dysbiosis is the cause of caries, while more than half of the students (53.5%) do not know the impact of dental plaque. Additionally, more than one-third of students (35.7%) are unaware of preventive measures for oral disease. A greater number of M and N students than SER students reported that oral health is related to cardiovascular disease (p=0.002), and more M students reported that it is related to cancer compared to SER students (p=0.032). Conclusion. The results of this study indicate limited knowledge of oral health among students across all three study programs, underscoring the need to improve oral health education for health sciences students.

Urinary tract infections, as one of the most common infectious diseases, contribute substantially to the global healthcare burden, particularly due to the rising prevalence of resistant bacterial strains such as Klebsiella pneumoniae. Background/Objectives: The aim was to investigate the prevalence of urinary tract infection pathogens among hospitalized patients at Saint Apostol Luka Hospital in Doboj during the period 2021–2023. Methods: This retrospective cross-sectional study was conducted at Saint Apostol Luka Hospital, Doboj, Republic of Srpska, Bosnia and Herzegovina. Data from the Department of Microbiology were analyzed for the period 2021–2023, including patients with positive urine cultures (≥103 CFU/mL) of a single uropathogen. Bacterial identification and susceptibility testing were performed according to EUCAST standards, and statistical analysis was carried out using SPSS v24. Results: Escherichia coli was the most frequent isolate (29.2%), followed by Klebsiella spp. (24.2%) and Enterococcus spp. (19.8%). A significant rise in K. pneumoniae prevalence and resistance to multiple antibiotics—including β-lactams, carbapenems, aminoglycosides, and colistin—was observed during the study period. Conclusions: This study revealed that E. coli and Klebsiella spp. were the leading uropathogens, with notable differences in distribution by sex, age, and hospital department. A marked rise in multidrug resistance, particularly among K. pneumoniae, was observed across the study period. These findings underscore the urgent need for continuous surveillance and stronger antimicrobial stewardship to curb resistance trends.

<p><strong>Introduction.</strong> The purpose of this case report was to present a surgical-orthodontic treatment of bilaterally impacted maxillary canines using Cone Beam Computed Tomography (CBCT).&nbsp;<br /><strong>Case report. </strong>A 16-year-old girl accompanied by parents was admitted to the Specialist Center for Dentistry, Faculty of Medicine Foča, for orthodontic consultation related to aesthetic reasons. Clinical examination revealed the existence of deciduous canines on both sides of maxilla and palpable a tooth-like structure at the level of root of the maxillary right canine. The maxillary left permanent canine was neither visible nor palpable. CBCT analysis showed bilateral impaction of upper canines: the crown of maxillary right canine was positioned centrally in the alveolar processus, while the maxillary left canine was palatally impacted. The treatment plan included combined surgical-orthodontic treatment: fixed orthodontic appliance with standard conventional metal braces, extraction of both deciduous canines and surgical release of impacted permanent canines using closed eruption technique. Favorable clinical results were observed within nine months after initiation of treatment. After two years canines erupted at proper position in dental arch, reaching the occlusal plane with a present of harmonious soft tissue and an adequate zone of keratinized gingiva around teeth.&nbsp;<br /><strong>Conclusion. </strong>The impaction of maxillary canines is frequent condition which requires a multidisciplinary treatment approach by orthodontist and oral surgeon, and also a motivated patient. The use of CBCT can increase success of the therapy with the proper localization of impacted canines and surrounding anatomical structures.</p>

Abstract White enamel discolorations are frequent and can impact patients' quality of life. Enamel hypoplasia is a condition that affects the quality of enamel, resulting in a change in its translucency and color. Minimally invasive procedures of the slightly altered enamel are an effective treatment for improving the esthetic appearance of tooth discoloration. They contribute to a greater longevity of teeth and prevent them from relapsing into the repetitive restorative cycle. Two case reports aimed to show a sequential technique of minimally invasive procedures for treating enamel hypoplasia in anterior teeth. The sequential technique consisted of three steps: anterior teeth were firstly bleached in office with 40% hydrogen peroxide (Opalescence™ Boost™, Ultradent Products Inc, South Jordan, UT, USA), then hypoplastic spots on the buccal incisal thirds of the maxillary central incisors were treated with two sessions of microabrasion using phosphoric acid (Ultra-Etch, Ultradent Produtos Inc, USA) and pumice stone and finally resin infiltrant (Icon, DMG, Germany) was applied on the buccal incisal thirds of teeth in one session. The proposed strategy was based on masking the lesion by infiltrating the porous subsurface enamel with a hydrophobic resin that has a refraction index closer to that of sound enamel, after permeating the non-porous surface enamel through hydrochloric acid erosion. The masking of hypoplastic spots was done with this sequence of treatments and reestablishing color harmony. However, the clinical success can vary depending on the depth of white spots, patient's oral hygiene habit and compliance with post-treatment care instructions.

Early orthodontic treatment is considered as treatment that begins and ends before all permanent teeth erupt, i.e. it is carried out in the period of milk and mixed dentition. Synonyms of early treatment are: preventive orthodontic treatment, interceptive orthodontic treatment or the first phase of comprehensive treatment. The aim of the work is to consider the advantages and disadvantages of early orthodontic therapy. It is necessary to carry out therapy that will lead to the desired facial aesthetics, increase the child's confidence, parents' satisfaction, enable simpler therapy in the future, a better and more stable result, enable the proper performance of orofacial functions, achieve more opportunities for skeletal growth modification and reduce potential iatrogenic damage. Based on an extensive diagnostic procedure, which includes: history, clinical examination, functional analysis, radiography and photography of the patient and analysis of study models, we come up with a therapy plan. The case report is a girl aged 9 years and 3 months. Early treatment should be carried out only in children who have a definite need for treatment. The group with a limited need should be given time for spontaneous correction.

Functional appliances are key to success in early orthodontic therapy. Their application is most useful in the period of a pre-puberty and pubertal growth spurt, in order to achieve facial aesthetics and improve the patient's health. The aim of treatment with functional appliances is to act on the muscles and ligaments, thereby influencing the movement and growth of the lower jaw forward, when it comes to the distal bite. The devices are used to correct malocclusions in all three spatial planes: sagittal, vertical, and transferal. In the sagittal dimension, the distal bite is corrected and Angle class I occlusion is established. In the transferal dimension, appliances are used to expand the dental arches. In the vertical dimension, appliances are used to correct an open or deep bite. Most often, mobile functional appliances are used, which consist of special upper and lower parts, such as the Twin block and the "M" block. Other types of functional devices have been used for many years, they consist of one part and their disadvantage is discomfort for patients and the impossibility of use in the presence of septal deviation or any other airway obstruction (activator and all its modifications, as well as Bionator). Recently, fixed functional appliances are also used, the advantage of which is that they do not depend on the cooperation of the patient and that they hold the mandible in an anterior position for 24 hours, achieved on the basis of an adequately taken construction bite. Their application is not conditioned by the puberty growth spurt but can be used by post-adolescents and young adults. In the production of functional appliances, the most important thing is to take a good construction bite, which determines how the muscle power will be transferred to the tissues, teeth, and jawbone. They determine the course of treatment and its duration. Muscle activation is performed in sagittal, transverse, and vertical directions, individually for each patient depending on the type of device.

This paper presents the resources and tools used to extract and evaluate bilingual, English-Serbian terminology in the power engineering domain. The resources consist of existing general and domain lexica, and a domain parallel corpus; tools include term extractors for both languages and a tool for aligning the segments belonging to corpus sentences. The system was tested by varying a match function that establishes the presence of an extracted term in an aligned segment (a chunk), ranging from very loose to strict. The evaluation of results showed that the precision of English term extraction was 92%, Serbian term extraction 86%, while the precision of bilingual pair extraction was 72% based on the strictest match function. The result of extraction was 2,684 correct bilingual pairs that enhanced the terminology database and can further be used to support the search of the power engineering aligned collection stored in a digital library.

Introduction. Hyperdontia or supernumerary teeth are excess number of teeth in comparison to normal dentition. The aim of this study was to present different variants of permanent supernumerary teeth, as well as their observation or elimination in order to prevent possible complications Case report. Six different cases of hyperdontia are presented in this paper. All hyperdontia cases were multidisciplinary evaluated and individual treatment protocols were applied. Already erupted supernumerary teeth were extracted without surgical intervention. Unerupted teeth were surgically removed or left for observation. Conclusion. Early and frequent dental check-ups are very important for children in order to detect possible dentition irregularities and thus timely start with appropriate therapy.

Introduction. Epulis is a change in gingival tissue that occurs under the influence of chronic irritation. Histologically, there are several different types of epulis. Fibrous epulis is benign tumor of gingiva that most often occurs in interdental papilla area as a result of local irritation (inadequate restorative fillings, carious teeth, subgingival deposits or the combination of them). The aim of this paper is to present a clinical case of fibrous epulis. Case report. A 25-year-old girl reported to the Specialist Center for Dentistry in Foca. Clinical examination revealed a gingival tissue enlargement in the area of the upper jaw central incisors with speech and chewing function disturbances. Intraoral examination revealed a change above the level of gingiva, reddish-pink in color with smooth surface texture and soft consistency. The size of the change was 1 x 1.5 cm. It was connected to the interdental gingiva between teeth 12 and 21 by a narrower base. Clinically, a significant amount of soft and hard dental deposits surrounded the remaining teeth. Remaining gingiva was swollen, red, bleeding on provocation. The anamnesis did not confirm the presence of other acute and chronic diseases. The patient was not pregnant. She was informed about clinical condition assessment, as well as possible therapeutic procedures. Our patient was treated with non-surgical periodontal therapy and surgical excision of the enlargement. After histopathological examination of the removed tissue, the diagnosis was made: "Fibrous epulis cum ulceration". Conclusion. Clinical examination is insufficient for definite diagnosis. Therefore, a histopathological examination of the tissue is mandatory for fibrous epulis definite diagnosis. Treatment of choice is surgical excision of the enlargement and removal of predisposing factors to avoid recurrence.

Introduction. Success in endodontic treatment depends upon the clinician's knowledge and ability to recognize and diagnose the presence of anatomical and morphological variations of the root and canal system. Mandibular canines are usually recognized as having one root and one root canal. In spite of the low incidence of mandibular canines with one root and two canals, their appearance should not be neglected due to the fact that the presence of a second canal in these teeth leads to difficulties in endodontic treatment. The aim of this case report is to describe mandibular canine with two root canals. Case presentation. 45-year-old patient presented for medical care due to the pain in a lower right canine. Clinical and radiographic examination revealed composite filling and caries with periapical radiolucent area and sensitivity to percussion in the mandibular right canine. By careful evaluation of the diagnostic radiology, it was observed that the mandibular canine had two canals. The patient was diagnosed with acute apical periodontitis and root canal therapy was given following the standard protocols. Conclusion. Although the prevalence of two canals in mandibular canine is low, the clinician should always be mindful of variations in the number of canals for appropriate therapeutic management.

Introduction/Objective. Malocclusions are one of the most frequent disorders in dentistry, and pose a risk for the onset of caries and periodontal diseases. Fixed orthodontic treatment solves the problem of malocclusions; however, it requires simultaneous cooperation of the patients, parents, and dentists involved. The objective of this study is to examine the effects of fixed orthodontic therapy on the Streptococcus mutans and Lactobacillus spp. bacteria in saliva, the pH value, and buffering capacity of saliva. Methods. The research was carried out at the Faculty of Medicine in Foca, Department of Dentistry. The study included 100 respondents, aged 13 to 17 years. The respondents were divided into two groups: the study group (respondents wearing fixed braces) and the control group (respondents not subjected to fixed braces therapy). Saliva samples were taken from the respondents four, 12, and 18 weeks after the start of the orthodontic therapy. The study used the bacteria caries risk test (CRT) and CRT buffer (Ivoclar Vivadent). Results. The study showed an increased number of bacteria in saliva of the respondents during all three follow-up periods (χ2 test, p = 0.001). The largest numbers of the Streptococcus mutans and Lactobacillus spp. bacteria were found in week 12 of the therapy. Saliva pH value and buffering capacity of saliva increased statistically significantly in week 12 of the therapy (χ2 test, p = 0.001). Conclusion. Oral conditions in patients changed during the fixed orthodontic therapy: the number of bacteria increased, the pH value and buffering capacity of saliva changed. It was necessary to use preventive measures in order to avoid complications during the fixed orthodontic appliances therapy.

Introduction. The success of endodontic treatment depends on the adequate biomechanical preparation and obturation of the entire root canal system. The untreated or poorly debrided/obturated root canals are among the most frequent causes of endodontic treatment failure. The endodontic treatment of maxillary molar has the highest failure rates due to the complexity of their root canal anatomy. The aim of the study is to present the endodontic treatment of maxillary second molar with two roots and two canals. Case report. The clinical case report presents the endodontic treatment of maxillary second molar with two roots and two canals in a patient, aged 32 years. After the analysis of preoperative diagnostic radiograph, opening the pulp chamber and access cavity preparation, two canal orifices were localized. After the biomechanical preparation, root canals were obturated with the Gutta-percha points and sealer during the same visit. Conclusion. Although maxillary second molar most commonly varies in terms of the number of root canals in the buccal roots, less common variations in anatomical and morphological traits, such as the presence of two roots and two canals, should be considered during endodontic treatment.