The high prevalence of enteric bacteria and yeasts in root-filled teeth with chronic apical periodontitis was established. IKI improved the antimicrobial effect of the treatment.

The occurrence of Enterococcus faecalis in root canals of previously root filled teeth with apical periodontitis requiring retreatment was studied in Lithuanian patients. Twenty-five asymptomatic teeth were included in the study. Avoiding contamination microbiological samples were taken from the canals before and after preparation and irrigation with sodium hypochlorite and EDTA. Microbes were isolated from 20 of 25 teeth. E. faecalis was isolated from 14 of those 20 culture positive teeth, usually in pure culture or as a major component of the flora. Second samples taken after preparation revealed growth in 7 of the 20 teeth. Five of the seven cases were E. faecalis in pure culture. Isolation of E. faecalis was not related to the use of any particular root filling material in the original root filling. The results indicate that, rather than previous chemical treatment, it is the ecological conditions present in the incompletely filled root canal that are important for the presence of E. faecalis in these teeth.

No abstract

The aim of this study was to document dentists' self-perceived mental health complaints and job satisfaction, and to assess any correlations between the two. A postal questionnaire survey was mailed to all (N=2,449) licensed dentists registered with the Lithuanian Dental Association. The questionnaire investigated dentists' mental health and job satisfaction during the previous year (overall response rate: 68.2%). The majority of respondents (80.7%) reported being satisfied with their job. Self-perceived lack of self-esteem (OR: 0.59, 95% CI: 0.43-0.82), loneliness (OR: 0.72, 95% CI: 0.53-0.98), and especially depression (OR: 0.52, 95% CI: 0.35-0.77) had a high negative impact on dentists' job satisfaction. Nervousness (89.2%) and burnout (83.6%) were the most prevalent mental complaints and they also tended to be the most chronic of all reported mental disorders. Increasing age significantly reduced the possibility of nervousness or depression and increased the possibility of being satisfied with dental practice. Increasing working hours increased the risk of burnout, anxiety and loneliness. Overall, this study suggests that the majority of Lithuanian dentists are satisfied with their job and also enjoy their professional lives. However, a considerable proportion still reported impairment of mental health which influenced their levels of job satisfaction.

Conventional caries trials last from 24 to 36 months. This study evaluated whether the previously established difference in efficacy between 1000- and 2500-ppm-fluoride dentifrices could be detected after 12 months. Caries was assessed by clinical visual assessment (CVA-simplified version of Dundee Selectable Threshold Method - DSTM), bitewing radiography, and Fiber Optic Transillumination (FOTI). Changes in status for individual surfaces were classified by means of pre-prepared matrices as 0 (unchanged), +1 (initiation or progression), or -1 (regression) and summed for each subject to yield an event score. Mean group event scores were calculated for each product. DSTM at the D(1) [enamel and dentin] threshold showed significant inter-group differences in mean event scores (p < 0.003) and D(1)MFS increment (< 0.007) at 12 months; these were confirmed at 24 months by traditional increment analysis (CVA & FOTI at the D(3) (dentin only) threshold + radiography, p < 0.03). This study confirms the validity of an abbreviated trial protocol.