Search PubMed⌕ Search

Biomedical subjects

J D Strahan

Publications and source records attributed to J D Strahan.

7 recordsLinked to original sources
PubMed1979

Amalgam restorations, plaque removal and periodontal health.

A total of 156 approximal subgingival amalgam overhanging margins were assessed in the buccal segments of 13 patients for plaque accumulation, gingival inflammation, pocket depth and gingival shrinkage. Recordings were made immediately before and 2, 4 and 8 weeks following scaling, removal of overhangs, and oral hygiene instruction. Surfaces with overhangs were compared with control surfaces, which were either intact or contained supragingival amalgams. Initially it was found that gingival inflammation and pocket depth were more extensive adjacent to subgingival amalgam overhangs than to sound teeth or those with supragingivally located amalgams. This appeared to be due to preferential plaque accumulation in relation to subgingival overhangs. For all parameters compared, differences apparent at the baseline had disappeared by the end of the 8-week study period. Contouring of defective subgingival restorations, followed by effective scaling and oral hygiene instruction produced approximately 1 mn of gingival shrinkage, sufficient in most cases to produce clinical gingival health. Of the 156 subgingival fillings 83 (53%) became supragingival and 43 (28%) reached the gingival crest by the end of the 8-week study period.

Dental Amalgam↗
PubMed1978

The effect of a 1% chlorhexidine gel in the initial therapy of chronic periodontal disease.

Thirty patients took part in a 4 week 'double-blind' clinical trial. Following initial oral hygiene instruction and scaling, half the patients were instructed to brush with a 1% Chlorhexidine gel in the evenings, the other half to use placebo. A standard dentifrice was used in the morning. In both groups there was a marked improvement in all parameters recorded, and although final plaque scores showed a statistically significant difference in favor of the test group, there was virtually no difference in rate or degree of resolution of gingivitis. The use of standard dentifrice was only partially successful in preventing staining.

Adolescent↗
PubMed1977

Control of plaque by non-chemical means.

Bacterial plaque at the dento-gingival margin is always associated with gingivitis. Measures which keep the area free from plaque will maintain health or encourage healing of existing gingivitis. Scaling and polishing at 6-month intervals may be sufficient for those patients who practice near-perfect oral hygiene but it is not an effective way of promoting the resolution of established gingivitis. A change to effective oral hygiene measures by the patient is the major factor in resolving gingivitis, but the association with scaling and polishing provides the ideal combination. Toothbrushing may only clean the oral and facial aspects of the teeth so interdental cleaning is necessary where gingivitis is established. There is no clear evidence that any particular oral hygiene routine is better than any other for all patients. It is generally agreed that thoroughness is extremely important. There is a variety of ways of motivating patients to practice effective oral hygiene but all reports indicate that it is most likely to be effective on a person-to-person basis. Motivation itself is not enough and must be associated with education and instruction. Long-term failure is likely unless the message is reinforced at regular intervals.

Dental Plaque↗
PubMed1976

[Plaque control].

Explore the source record for details and available documents.

Dental Plaque↗