Prior aerobic exercise prevented the decline in femoral artery FMD that is otherwise induced by prolonged sitting independent of changes in oxidative stress, ET-1, and NO status.
The effect of five root canal sealers and two root canal dressing materials on the growth of three anaerobic bacteria associated with endodontic infections was determined using the agar diffusion inhibitory test. Samples of the following endodontic sealers (Apexit, Ketac-Endo, Roth Sealer, Sealapex and Tubliseal) and root canal dressing materials (Pulpdent and Root-cal) were incubated for 48 h with the following anaerobic bacteria: Capnocytophaga ochracea, Porphyromonas gingivalis and Peptostreptococcus micros. Statistically significant zones of bacterial growth inhibition for all the bacteria tested were observed in descending order of antimicrobial activity: Roth Sealer, Ketac-Endo, Tubliseal, Apexit and Sealapex. Root-cal and Pulpdent also showed statistically significant antimicrobial activity, but only to Capnocytophaga ochracea, not to the other two bacteria tested, with Pulpdent being the least active.
Two hundred and forty stained extracted teeth with a restoration on one proximal surface and with no restoration on the opposite surface were investigated for the position and quality of the restoration and the position of the periodontal attachment. Only 27% of restorations were of good quality, 60% had overhangs and 13% deficiencies. The mean difference in loss of periodontal attachment (LOA) between the two surfaces for all teeth was 0.36 mm when the distance from the cemento-enamel junction to the periodontal membrane on the unrestored surfaces was subtracted from that on the restored surfaces. If allowance is made for those restorations located apical to the cemento-enamel junction, the LOA difference was 0.18 mm.
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