[Clinical and microbiological study regarding surface antibacterial properties of bioactive dental materials]. / Studiu clinico-microbiologic privind proprietatile antibacteriene ale unor materiale de restaurare cu caracter bioactiv.

UNLABELLED: In the new era of dentistry the coronal restoration materials must possess "bio-active" features represented by fluor ions release, chemical adhesion and antibacterial agents. AIM: Our study aims to determine the surface antibacterial properties of glassionomer cements and compomers. MATERIALS AND METHOD: The study group included 64 patients with high cariogenic risk with 80 teeth with acute and chronic dental caries affecting proximal and occlusal dental surfaces. The teeth with cariogenic lesions were restored with zinc-oxide-eugenol (n=20), glassionomer cement GC Fuji Triage (n=20), glassionomer cement modified with resins Fuji II LC (n=20), compomer Dyract (n=20). DENTOCULT SM test (Orion Diagnostica, Finland) was used for bacterial analyses. The samples from bacterial biofilm were collected from the restorated dental surfaces (study group) and intact enamel surfaces (control group). The recorded data were processed using non-parametrical statistical tests. RESULTS: The lowest mean value of bacterial indices was recorded for glassionomer cement Fuji Triage (0.4), and Fuji II LC (1.2), material with highest surface antibacterial properties. The highest value (1.5) was recorded for compomer Dyract. The Kruskal-Wallis test proves the significant statistical differences between the three bioactive materials. CONCLUSION: The materials with bioactive features have the ability to inhibate the growth of Streptococcus mutans in bacterial biofilm to the surfaces of coronal restoration.

[Epidemiological study regarding prevalence, distribution and severity of periodontal disorders in a study group aged between 15-65 years]. / Studiu epidemiologic privind prevalenta, distributia si severitatea afectiunilor parodontale in cadrul unui lot de pacienti cu vârsta 15-65 ani.

UNLABELLED: The study aimed to assess the prevalence and severity of periodontal disorders as well as possible correlations between periodontal status and parameters as follows: sex, age, dental group. MATERIAL AND METHOD: Study group included 143 subjects (58-males, 84-females) aged between 15-65 years. The assessment of periodontal status was performed using CPITN indices (gingival inflammation, periodontal pockets depth) and Rateitschak indices (alveolar resorption degree visible on ortopantomographs). The correlations between age group, sex, dental group and CPITN indices, alveolar resorption degree and periodontal status were performed. Data were processed and submitted to statistical analysis. RESULTS: The results regarding CPITN indices distribution were as follows: CPITN 0-6%, CPITN 1-8%, CPITN 2-22%, CPITN 3-47%, CPITN 4-17%. The results regarding alveolar resorption degree were as follows: absent-37%, small-28%, moderate-24%, severe-11%. The prevalence of chronic periodontitis was 60% and rapid progressive periodontitis were associated with 4.2% patients. CONCLUSION: The investigation of CPITN indices and alveolar resorption degree represent efficient tools for the assessment of periodontal status and treatments needs in epidemiological studies.

[Longitudinal study of the efficacy of conservative endodontic treatment for chronic periapical lesions]. / Studiu longitudinal privind eficienta tratamentelor endodontice conservatoare pe un lot de dinti cu leziuni periapicale cronice.

UNLABELLED: Our study aimed to assess the possibilities of healing in periapical lesions following endodontic therapy, using a standardised technique. MATERIAL AND METHODS: Study group included 34 patients with 15-45 age. 40 teeth with periapical granuloma and periapical difuse osteitis were endodontically treated. All teeth presented radicular obturations with adequate length and density consisting of gutaperca points and antiseptic sealer (Endoflas, Sanlor). Optimum coronal sealing was provided through prosthetic restorations or composite resins associated with glassionomer cements. All treated teeth were radiographically monitorised on a 24 months time interval. Periapical Index (PAI) were used for assessment of periapical healing processes. Recorded data were used for statistical analysis in SPSS 16 trial. RESULTS: The assessment of periapical status after 24 months showed a complete periapical healing for 42.5% teeth (PAI 1-2), partial periapical healing for 52.5% teeth and 5% endodontic failures. Median values for PAI indices decreased from an initial 4.75 value to 4.30 after 3 months, 3.33 after 12 months and 2.60 after 24 months. Wilcoxon tests confirm significant statistical differences between PAI indices at different time intervals. CONCLUSIONS: Adequate radicular obturation associated with optimum coronal sealing provide a favourable environment for periapical healing processes, providing success in endodontic therapy of chronic apical periodontitis. Time interval represents a major factor that influences periapical remineralisation degree.