Objectives: To evaluate the effects of ozone in periodontal
treatment in dental practice. Methods: An evaluation of the current state of
knowledge regarding the application of ozone in periodontal treatment revealed
limited available literature. Therefore an audit was conducted in dental
practice in order to evaluate the effects of ozone in periodontal treatment.
Twenty-five patients were treated with gaseous ozone after having had failed
conventional periodontal treatment. BPE scores and the six deepest pockets were
measured in each patient before and after the use of ozone. Results: From the initial number of
twenty-nine patients selected, twenty-five patients attended both follow up
appointments. Based on BPE scores, twenty of the patients have overall improvement
while five of the patients continued to have deterioration. Eight patients had
an improvement in depths of periodontal pockets by three millimetres, sixteen patients
had improvement by one to two millimetres and one patient did not improve.
The depth of pockets after the use of ozone decreased significantly (P < 0.001). Conclusion: The audit revealed that
gaseous ozone significantly (P < 0.001) reduced the depth of pockets in
patients with periodontal disease. The positive results encourage further
investigation in the subject.
The soil environment is linked to aboveground management including plant species composition, grazing intensity, levels of soil disturbance, residue management, and the length of time of a living plant is growing. Soil samples were collected under rangeland [native grass, rotational grazing (NGRG); tame grass, heavy grazing (TGRG); and tame grass, rotational grazing (TGHG)] and cropland [conventional till (CT); CT plus manure (CTM); and long term no till (NT)] systems. The rangeland systems were hypothesized to have higher glomalin content [measured as Bradford-reactive soil protein (BRSP)] and water stable aggregation (WSA) than the cropland systems. In addition, within both rangeland and cropland systems, BRSP and WSA were expected to decline with increased disturbance due to grazing or tillage and going from native to introduced plant species. Differences were detected for BRSP with NGRG and CTM having the highest values in range and cropland systems, respectively. However, the CTM system had higher BRSP values than one or both of the tame grass systems while the CT and NT systems had similar values. Correlation analysis showed strong relationships between all of the BRSP values and WSA.