Long-term effects of Meridol and chlorhexidine mouthrinses on plaque, gingivitis, staining, and bacterial vitality.

The aim of the present study was to compare the effect on plaque growth and gingival response of Meridol, an amine/stannous fluoride solution, during a three-month investigation, with those of a placebo preparation as a negative control and a chlorhexidine solution as a positive control, in a double-blind study. After having their teeth professionally cleaned, 36 volunteers continued their usual oral hygiene for a period of two weeks. Their teeth were then polished again (month 0) after which they rinsed twice daily (morning and evening) with one of the three mouthrinses in addition to their habitual toothcleaning. After three months of rinsing, plaque indices remained lowest in the chlorhexidine group, although the subjects using Meridol had indices significantly lower than those of individuals rinsing with the placebo solution. The gingival index scores in the Meridol group were higher than in the chlorhexidine group and lower than in the placebo group. The plaque vitality scores showed a bactericidal effect in vivo with chlorhexidine and Meridol during the entire experiment. The use of Meridol resulted in more toothstaining than with the placebo, but significantly less than with chlorhexidine. This study demonstrated that Meridol reduced plaque accumulation, retarded gingivitis development, possessed a definite bactericidal action, and produced only slight toothstaining.

Student dental hygienists' work values: a measure of an emerging profession?

The purpose of this study was to compare the work values of students in the School of Dental Hygiene and the Faculty of Dentistry at the University of Manitoba, Canada, both with each other, and with national sample of Canadian practitioners in both fields. The study was an outgrowth of a larger study measuring the work values of graduating students in six faculties selected to represent the occupational classification system of John Holland. The English version of the Canadian form of the Values Scale which measures 20 work and life values, was used in this study. Differences in values found between the student hygienists and practitioners in both dentistry and dental hygiene may indicate a growing desire for professional status by dental hygienists. Value differences found between practising dentists and hygienists may reflect a traditional hierarchical relationship between these occupations. Limitations of the study and future research questions are discussed.