[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.

[The bony modifications in the periodontal pockets]. / Modificari structurale osoase in pungile parodontale.

UNLABELLED: The aim of this study was to demonstrate the bony structural changes in deep periodontal pockets. MATERIAL AND METHODS: Bony fragments were taken from the alveolar wall of a group of 24 patients diagnosed with deep periodontal lesions which required the extraction of certain irrecuperable teeth. Fragments were fixed in glutaraldehyde, then decalcified in EDTA 5% and proccesed for electron microscopic examination and a semifinesse sections to microscop "Zeiss Axioscop". RESULTS: Both optic and electron microscopy showed: decreaze of bone mineralization and alterations in cholagen structure; the presence of osteoclasts with intense activity and numerous macrofages; at the level of bone marrow, small, insignificant inflammatory reactions, contrasting with the important surrounding modifications; in certain cases though osteolytic reactions occured, the osteoclasts could not by evidenced, on the contrary, numerous macrophages with intense lysosomal enzymes activity were noticed; all the cases showed an alteration of the alveolar bone cholagen. CONCLUSION: Thus, we can better understand the role of primary factors in this bony structures.

[Cariogenic risk assessment in a group of diabetic patients]. / Studiu privind evaluarea riscului cariogen la un lot de pacienti diabetici.

UNLABELLED: The aim of this study is to bacteriologically investigate the oral environment in patients with diabetes and thereby reveal their influence on the incidence of caries. MATERIAL AND METHOD: We compared oral microbial flora between patients with diabetes (n=40) and healthy people (n=38). Cariogenic bacteria were identified according to Dentocult System. RESULTS: When comparing between patients with diabetes and healthy people, the detected number of cariogenic bacteria in the patients with diabetes were significantly higher than in healthy people. CONCLUSION: The findings suggest that patients with diabetes tend to have a higher risk of dental caries than the control.

[Evaluation of caries activity using the micro-crystallization saliva index (IMK)]. / Evaluarea activitatii bolii carioase cu ajutorul indicelui de microcristalizare salivara.

The dental decay activity of a patient can be evaluated with the help of certain indirect signs that reveal the dental decay risk elements. The quantity, buffer capacity, inorganic components of the saliva are important in the pathogenesis of dental decay. The micro-crystallization saliva test (IMK) may represent an important criterion on whose basis one obtains an evaluation of the re-mineralization capacity of saliva. The purpose of this study consisted in the calculation of the IMK index on a lot of patients and its correlation to the type of dental decay activity. The study was conducted on a lot of 30 patients with ages between 18 and 45, nursed and examined every 6 months during 18 months. The attention was focused on the following parameters: the index of micro-crystallization (IMK) and the dental decay activity, calculated as rate of appearance of new dental lesions within 18 months. As a result of investigations, the authors observed the following correlations to dental decay activity: the patients with IMK = 1/0.6 did not have any new dental lesion, in the patients with IMK = 0.6/0.4 new dental lesions appeared within 12-18 months and in the patients with IMK = 0.4/0 new dental lesions appeared in less than 6 months after examination. The IMK index--indicator of the re-mineralization capacity of saliva, may be evaluated using a relatively simple methodology, accessible and at a moderate price. Research pointed out that this index may be an useful instrument when evaluating the dental decay susceptibility of patients, contributing to the identification of the dental decay risk and consecutively to the choice of individualized prophylactic and therapeutic procedures.

[Clinical aspects of the evolution of dental caries and periodontal disease in patients treated with corticosteroids]. / Aspecte clinice ale evolutiei cariilor dentare si a bolii parodontale la bolnavii supusi corticoterapiei.

Patients treated with adrenal glucocorticoids may run a higher risk of dental caries, both as a result of their medical condition and of the physical and physiological effects of their pharmacotherapy. Our clinical study reports about patients treated with glucocorticoids who were also having an odonto-periodontal condition. They were examined and we found rampant caries and periodontal diseases. The slow evolution of asymptomatic periodontal disease encouraged destruction of teeth in root caries. The rampant caries were correlated with immunodeficiency and treatment of these caries must take into account the general treatment.