Background: The common cause of dental infections is necrosis of the pulp of a tooth, which is followed by bacterial invasion through the pulp chamber into the deeper tissues. The bacterial infections are caused by host indigenous bacteria primarily aerobic gram positive cocci, anaerobic gram negative and gram negative rods. The aim of this study is to identify the presence of different cultivating microorganisms which cause dental infections in primary and young permanent teeth manifested by as abscesses and apical parodontitis. Material and Methods: Seventy kids ages 5-15 years (36 females, 34 males) were studied prospectively (I assume this) at the University Dental Clincal Center of Kosovo, Department of Pediatric Dentistry in cooperation with Microbiological Department of Faculty of Medicine. All patients who had clinical, and radiological confirmation of thier dental infections, followed by extraction of their teeth. Once the tooth was extracted blood and pus sample from the empty alveoli were cultured. The analysis of the sample for bacteria identification was done using the automated system VITEK 2 cards (Biomeriux, France). Results: Of 70 children's with deciduous 73.5% of them had acute infection and 26.5% chronic infection. On the other hand 75% of children with permanent dentitions had chronic and 25% acute infection. In acute infections the most common aerobic bacteria was Streptococcus group with 47% (Streptococcus mitis and oralis) followed by the Actonomyces group (Actinomyces mayeri and Actinomyces odontoliticus) and anaerobic bacteria in 34%. In chronic infections streptococcus group was the prevalent aerobic group and in anaerobic infection Actinomyces mayeri and Actinomyces naeslundi was the most representative aerobes in 21% of samples. Conclusion: The dental infections in pediatric population (5-15 years old) are polymicrobial predominantly anaerobic bacte-T. Kutllovci et al. 60 ria over aerobic. This study paves the way for preventives measures that need to me implemented in this group of children.

Children with congenital heart diseases (CHD) are considered to be at higher risk of development of a Bacterial Endocarditic (BE) from infectious diseases of the oral cavity and following dental treatments. They represent the largest group of patients with special medical needs who appear in the daily dental practice. Maintenance of oral health and oral hygiene is suitable to reduce the incidence of bacteremia. Oral hygiene is more important in reducing the risk of BE than the administration of antibiotic-prophylaxis before dental procedures. The purpose of this study was to identify the strains of streptococci viridians group from dental plaque and their amoxicillin resistance at children with congenital heart disease. The study was carried out in University Dentistry Clinical Center of Kosova, Department of Pediatric Dentistry in cooperation with the Microbiologic Department. Participants in this study (n = 90) were children between 6 -15 years old, divided in the control group of healthy children (n = 30), and two study groups, first group, children with CHD who have not taken antibiotics within last three months (n = 30) and second group, children with CHD who have taken antibiotics within three months (n = 30). The gram positive cocci were identified using the automated system, VITEK 2 (BioMerux), while for determining amoxicillin resistance cocci the disc diffusion method was used. By analyzing the three groups of children regarding isolated dental plaque streptococci, in general the Viridans group of streptococci (VGS) has dominated our results, with a higher percentage of streptococcus Mitis group * Corresponding author.A. Rexhepi et al. 346(37.2%). The highest resistance of VGS against amoxicilin was in the group of children with CHD, which have been using antibiotics within 3 months (23.3%). In the other two groups the resistance against amoxicillin was found in a lower percentage (3.3%). Based on the results of our study we can conclude that frequent use of amoxicillin may result in an increasing antimicrobial resistance of streptococci.

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BACKGROUND: Management of bone periodontal defects, destruction, and loss of the alveolar bone is considered a challenge for modern periodontal regeneration and implant dentistry. Numerous of biomaterials are being used in periodontal regenerative treatment. AIM: This study aims to know the characteristics of biomaterials and their efficiency in periodontal surgical treatment as regenerative therapy. METHODS: A systematic review of the literature considering reviews, clinical studies, original papers, and articles from electronic data has been used. RESULTS: Different biomaterials such as Straumann® Emdogain®, Geistlich Bio-Oss®, MIS 4MATRIX – Bone Graft, Platelet-rich fibrin (PRF), Mis Bone-4MATRIX, and PRF are being used for periodontal regeneration treatment, hence revealing more effective outcomes when combined. PRP together with conventional grafting procedures may be a beneficial treatment approach, guided tissue regeneration with bioabsorbable membranes in combination with Bio-Oss are stable on a long-term basis. CONCLUSION: Biomaterials being used in periodontal surgical treatment have the different regenerative ability. The combined use of biomaterials might result in a better clinical outcome. There are also a number of other biomaterials used to treat periodontal regeneration, but generally all have the same ability and the same molecular structure as highlighted in this literature review.