ObjectivesThe aim of the study was to assess the biocompatibility of modern composite and amalgam dental fillings.Material and MethodsThe research was conducted on 150 healthy patients between the ...ages of 10 and 20 who had amalgam and composite fillings between 6 and 12 months. Under in vivo conditions, a swab of buccal cells near the fillings was taken, and the cytotoxic and genotoxic impact of composite and amalgam fillings on these cells was analyzed using the extended micronucleus test (cytomeassay).ResultsThe results showed statistically significant differences between the groups of subjects with amalgam and composite fillings and subjects without fillings for the following parameters: number of micronuclei (p=0.006), number of buds (p<0.001), number of binuclear cells (p<0.001), number of nucleoplasmic bridges (p<0.001).The number of micronuclei was statistically significantly higher in the group of subjects with amalgam and composite fillings compared to the group without fillings. The results for nuclear buds, for the number of binuclear cells and the number of nucleoplasmic bridges showed that the group with amalgam fillings had a statistically significantly higher number of these changes compared to other groups.The results of the analysis of the relationship between the parameters of the micronucleus test and the number of amalgam and composite surfaces did not show statistically significant values. Parameters indicating cell cytotoxicity were not statistically significantly elevated in subjects with fillings. The results of the analysis of the influence of the patients' lifestyle on the results of the micronucleus test showed statistically significant results for certain predictors (diagnostic X-ray radiation, coffee consumption, consumption of cooked, dried meat and baked food).ConclusionBased on the results, it can be concluded that the buccal cells of subjects with amalgam fillings showed the highest degree of genotoxic changes, followed by those with composite fillings and the least buccal cells of patients without fillings.
The most commonly used bleaching agents contain different concentrations of hydrogen peroxide and carbamide peroxide. In the present case, the bleaching procedure was performed using an induced field ...of cold atmospheric plasma, obtained from dielectric barrier discharge. The therapeutic effect of the device used in the clinical procedure is based on floating electrode dielectric barrier discharge, in which the glass electrode functions as the primary electrode, while the therapeutic area, which in this case is the tooth, represents the secondary electrode. A periodontal (PA) probe is a glass tube filled with a noble gas, which generates an electrical discharge in the gap between the tip of the electrode surface and the therapeutic area, thus producing reactive oxygen species. Bleaching with only the cold atmospheric plasma bleaching technique, without any conventional bleaching agents, was performed successfully for an endodontically treated tooth. The cold atmospheric plasma bleaching technique, which could be a novel approach for the bleaching of non-vital teeth, provides good clinical results and is safe for clinical use.
To evaluate the type and the frequency of antibiotic prescribing along with endodontic therapy in Croatia. The aim is, also, to assess the attitudes of Croatian doctors towards endodontic treatment ...of patients at risk of developing bacterial endocarditis.
Data were collected by a survey questionnaire.
8.4% of the examined practitioners stated that they prescribe antibiotics often, and 91.6% of them stated that they prescribed them never/ very rarely/rarely. Most of them (41%) prescribe antibiotics once or twice a month, 32.5% once or twice in several months and 20.5% once or twice a week. The most commonly used antibiotic was penicillin with clavulanic acid. Also, 26.2% of examined practitioners prescribed antibiotics for gangrene pulp, 51.2% of them for localized acute apical periodontitis without swelling, 85% of them for cellulitis, 75% of them for fever and enlarged lymph nodes, 16.9% of them for tooth with fistula and 94.1% of them for prophylaxis of infectious endocarditis. According to the results of study, 54.4% of dental practitioners did not prescribe antibiotics without intervention on susceptible tooth; 76% of participants often/almost always/ always accepted endodontic treatment of patients requiring antibiotic prophylaxis to prevent infectious endocarditis, and 96.7% of participants indicated they were familiar with recent instructions for antibiotic prophylaxis.
These findings point to inappropriate use of antibiotics in the practice of 83 dental practitioners questioned regarding the frequency of administration and indications. The most commonly used antibiotic was penicillin with clavulanic acid. A high percentage of surveyed practitioners stated that they were familiar with recent instructions for antibiotic prophylaxis. They also stated that they performed endodontic procedures on patients who were at risk of bacterial endocarditis. There is a noticeable need for targeted continuing education of dental practitioners in the Republic of Croatia.
Abstract The purpose of this study was to evaluate polymicrobial coronal leakage of mineral trioxide aggregate (MTA) and amalgam. There were 108 single-rooted teeth randomly divided into 3 groups of ...32 teeth each and positive and negative control groups of 6 teeth and obturated with gutta percha and either Diaket (3M/ESPE, Seefeld, Germany), AH Plus (Dentsply, De Trey, Konstanz, Germany), or Ketac Endo (3M/ESPE). These groups were further divided into 2 subgroups of 16 teeth in which root ends were resected and obturated with either MTA or zinc-free amalgam. The samples have been incorporated in a dual-chamber leakage model with a polymicrobial marker of five facultative anaerobes on the coronal part. Leakage was observing during a period of 90 days. The least leakage was found in a combination of Diaket and MTA (76.9 ±14.8 days) followed by AH Plus and MTA (66.1 ± 18.7), Diaket and amalgam (60.0 ± 23.1), AH Plus and amalgam (56.9 ± 22.1), and Ketac Endo and MTA (42.1 ± 17.8), whereas the greatest leakage was observed in the Ketac Endo and amalgam group (40.0 ± 17.24). Samples filled with MTA showed significantly better sealing than samples filled with amalgam (p < 0.05).
The aim of this study was to evaluate
the antibacterial effect of ozone on suspension of three different bacteria inoculated in prepared canals of extracted human teeth.
Ozone was produced by special ...KP syringe of high frequency ozone generator Ozonytron (Biozonix, München, Germany) from aspirated atmospheric air by dielectric barrier discharge and applied through the tip of the syringe to the prepared root canal. The microorganisms used were
,
and
.
However, none of the methods was 100% effective against the three bacterial types in suspension. Application of ozone significantly decreased the absolute count of microorganisms (89.3%), as well as the count of each type of bacteria separately (
94.0%;
88.6% and
79.7%). Ozone generated by KP syringe was statistically more effective compared to NaOCl as positive control, for
and
.
The absolute count of
was statistically decreased without a statistically significant difference between the tested group and positive control, respectively. Among the three types of bacteria in suspension, KP probe had the lowest antimicrobial effect against
.
The aim of this study is to investigate caries prevalence and smoking habit in the population of 19-year-old Croatian male recruits. Dental examination of 505 male recruits was conducted in 2001 in ...the military centre in Koprivnica. Caries status was described by the FS-T (Filled and Sound Teeth) index and DMFT (Decayed, Missing and Filled Teeth) index. Mean DMFT scores were 7.32 and FST 23.56. There was a significant statistical difference in comparison of smoking habits depending on the reason to visit the dentist (p = 0.001). The subjects who do not smoke tobacco have less decayed teeth (DT index with p < 0.001), and more teeth with fillings and/or sound teeth (FT with p = 0.005 and FST with p = 0.004). There is no statistically significant difference for the DMFT (p = 0.657) and MT (p = 0.703). In conclusion, it showed that FS-T is a more appropriate index for describing variation in the population with higher caries experience. In the population of Croatian recruits, there were an astonishing 58.6% of smokers.
Erosive lesions in patients with alcoholism Dukić, Walter; Dobrijević, Tanja Trivanović; Katunarić, Marina ...
The Journal of the American Dental Association (1939),
12/2010, Volume:
141, Issue:
12
Journal Article
Peer reviewed
The authors conducted a study to determine the occurrence of erosive tooth lesions in patients with alcoholism and to establish the influence of salivary flow rates and pH levels on their appearance.
...The authors conducted a cross-sectional study in 140 participants (70 with clinically diagnosed alcoholism who were undergoing therapy for their addiction were in the test group and 70 who did not consume alcohol were in the control group). The authors determined the participants' salivary statuses by measuring the flow rates and pH levels of both unstimulated and stimulated saliva.
The authors found more erosive lesions in the test group (P < .01). They detected a higher number of erosive lesions in participants in the test group who had a pH range of 5 to 6 compared with a pH range of 6 to 7 (P = .01). They found a significant correlation between alcoholism and unstimulated salivary flow rate (P < .05).
The salivary flow rate was similar in control and test groups. The prevalence of erosion in the test group was higher than that in the control group, which may be related to the decrease in salivary pH of both stimulated and unstimulated saliva in this group. The results of the study showed no connection between erosion prevalence and pH levels and stimulated salivary flow rates.
Patients with alcoholism may be at risk of developing erosive lesions on their teeth owing to the low pH level of their oral environment and decreased saliva levels.
Aim of this paper was to investigate the particular anatomic features of the endodontic space of third molars in the general population of Croatia. A total of 106 fully developed third molars (56 ...maxillar and 50 mandibular) has been analyzed. The respective number of roots and of root canals, the structure of the roots, and the curvature and absolute length of the root-canals were analyzed. In most cases, upper third molars had three roots (83.9%), while most of the lower molars were single rooted (56.0%). Upper third molars had mostly three root canals (75.1%), lower third molars two (90.0%). In both jaws, most third molars had curved canals (60.7% in the upper and 84.0% in the lower jaw). 12.5% of upper third molars had lateral and accessory canals, whereas only 4.0% of the lower third molars were found to have them. The Student t-test showed statistically significant differences (p < 0.05) in the length of the root-canals, mesiobuccal and distobuccal canals being significantly shorter than palatinal canals. The same test showed that in the lower third molars the mesial root canals were significantly longer that the distal ones, although slightly. The results obtained are in compliance with similar results by other authors; however, they tend to show some specific population-related features.
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