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Biomedical subjects

R C Wunderlich

Publications and source records attributed to R C Wunderlich.

7 recordsLinked to original sources
PubMed1986

In vitro effect of topical fluoride on dental porcelain.

Fifty-seven porcelain samples were randomly subjected to a variety of topical fluorides for time intervals of 4 to 64 minutes. Half of each porcelain surface was masked to prevent contact with the fluoride. Measurements of roughness were made for the fluoride-treated and the untreated porcelain surfaces to evaluate the effect of the different fluoride preparations over time. The resulting surfaces were also examined using an SEM. Conclusions from this study include the following. Statistically significant differences in roughness were found among surfaces exposed to 1.23% acidulated phosphate fluoride gel, 8% stannous fluoride, and the control surfaces. There were no significant differences in roughness between the test and control surfaces with 0.05%, 0.2%, and 2% sodium fluoride solutions or 0.4% stannous fluoride gel. The dentist should be aware of the potentially deleterious effects of prescribing or administering a topical fluoride for patients with porcelain/metal restorations.

Acidulated Phosphate Fluoride↗
PubMed1985

The therapeutic effect of toothbrushing on naturally occurring gingivitis.

A majority of previous toothbrushing studies have examined proposed virtues of particular brushing techniques or the relative cleaning ability of various toothbrushes. A smaller number were concerned with their role in prevention of gingivitis. Whether toothbrushing could be therapeutic in naturally occurring gingivitis was tested in 40 teenagers aged 12 to 14 years. Groups from two public schools were examined for gingivitis and plaque. Students from both groups were given a soft multi-tufted toothbrush and nonfluoridated toothpaste to be used daily. Students at one school were given a single intensive oral hygiene session. All students were reexamined 42 days later and given a thorough prophylaxis. Final readings were obtained 84 days after baseline and the results analyzed statistically. Sign test analysis disclosed a significant (P less than .01) improvement in plaque and gingivitis scores for both groups. Wilcoxon tests of patient means revealed a significant improvement in plaque scores, whereas gingivitis means were more variable. Chi square analysis between groups showed that the groups receiving oral hygiene instructions had significantly better (P less than .01) plaque and gingivitis scores at session 2. Gingivitis differences were generally significant at session 3. Toothbrushing has a therapeutic effect on naturally occurring gingivitis, enhanced by oral hygiene instruction.

Adolescent↗
PubMed1985

Periodontal aspects of porcelain restorations.

At present, no man-made restorative can match the biologic acceptance of a hygienic natural tooth surface. Ideally, no restorative material would approach the gingival apparatus. However, as case demands often dictate violating this ideal, careful adherence to the principles discussed will minimize the damage to the periodontium. Ultimately, the response of the periodontal tissue will give the final approval or disapproval of any restorative procedure. The principles discussed must be considered at all phases of any restorative procedure. They must always be of primary concern.

Animals↗