This study aimed to evaluate the influence of subgingival irrigation with chlorhexidine and tetracycline on the effect of scaling and root planing in periodontal treatment. Fifty six sites. 5mm or greater in probing depth from selected patients,
were
divided into 4 groups: Group I -chlohexidine(0.1%) irrigation after scaling and root planing; Group II -tetracycline (0.5%) irrigation after scaling and root planing; Group III - saline irrigation after scaling and root planing and Group IV -
scaling
and root planing alone.
Following thought scaling and root planing, irrigation was done and repeated every other day during two weeks for group I, II and III, Clinical and microbiological monitorings were bone immediately before scaling and root planing and at 2, 4, 8
and
12
weeks after scaling and root planing, Clinically, plaque index(Silness and Loe), gingival crevicular fluid amount, probing depth, sulcus bleeding index(Muhlemann and Son) and attachment level were recorded. Microbiologically, trypsin-like enzyme
activity of subgingival microflora was monitored using benzoyl-arginine naphthylamide test.
@ES The results were as follows:
@EN 1. Plaque index score and attachment level showed no significant difference among the 4 experimental groups and during all the experimental periods.
2. Gingival crevicular fluid amount and probing depth showed significant decrease in irrigated group (Group I, II and III) from week 2, and in scaling and root planing only group (Group IV) from week 4.
3. Sulcus bleeding index score in each experimental group decreased significantly during all the experimental periods.
4. The trypsin-like enzyme activity in subgingival microflora in each experimental group decreased significantly during all the experimental periods. The results results suggest that the subgingival irrigation in the presence of thorough scaling
and
not planing has beneficial effect to the reduction in gingival crevicular fluid flow and probing depth in early post-treatment period and the antimicrobial irrigation has no additive effect.
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