The quality of higher education is of particular importance for the development and progress of modern society. Modern higher education institutions aim to improve their services, and establish a system of continuous quality assurance. Within the framework of the European Standards and Guidelines for Quality Assurance, Standard 1.6 requires the implementation of information systems for efficient management of study programs and other activities. During the phase of problem analysis and objectives, in regard to the application of information systems at the University "Dzemal Bijedic", the existence of heterogeneous internal and external data sources was established. In modern management, data is considered a key resource necessary for the survival and development of the institution. Accordingly, the research focus is on the development of models of business intelligence systems that will be based on existing data sources. This system would primarily be used to support internal quality assurance at the University, as well as management support for timely and optimal decision making process. This paper presents the tools and technology of business intelligence, and through practical example demonstrates the possibilities of the system.

Objectives: This study investigated the correlation between Tannerella forsythia, Porphyromonas gingivalis, Fusobacterium nucleatum, and Aggregatibacter actinomycetemcomitans at dual sites in concurrent endodontic-periodontal diseases. Material and methods: Samples were collected from endodontium and periodontium in cases of concurrent endodontic-periodontal diseases from thirty participants. The sensitivity and specificity of SYBR Green real-time PCR was used to identify the targeted species. Absolute number of targeted genome copies in tested samples were extrapolated from respective calibration curve. Results: No statistical difference was found in the number of detected endodonticperiodontal pathogens between the endodontium and periodontium. The Pearson test detected significant correlation (P<0.001) between targeted bacteria; T. forsythia, F. nucleatum, and P. gingivalis from endodontic-periodontal lesions. Synergistic component observed separately in endodontic biofilm was found only between T. forsythia and F. nucleatum (r=0.380, P=0.03) while in periodontal biofilm T. forsythia, F. nucleatum and P. gingivalis gave high synergism result (P<0.0001). Correlation analysis showed that T. forsythia in primary endodontic infection and in periodontal lesion was significantly decreased with the increase of patients age (r=-0.308, P=0.017). Conclusions: Correlation between targeted bacterial species levels from concurrent endodontic-periodontal diseases confirmed that coronal and cervical dentinal tubules may represent a viable pathway that allows spreading and maintaining of dual sites infection. Periodontal bacteria detected in root canal of concurrent endodonticperiodontal infections may originate from the local periodontal lesions.