Changes in the subgingival biofilm composition after coronally positioned flap.

OBJECTIVES

This study evaluated the effects of coronally positioned flap (CPF) on the subgingival biofilm composition.

MATERIAL AND

METHODS

Twenty-two subjects with gingival recessions were treated with CPF. Clinical parameters were assessed before and at 6 months after surgery. Subgingival biofilms were analyzed by checkerboard DNA-DNA hybridization technique for 40 bacterial species.

RESULTS

Recession height, clinical attachment level and bleeding on probing improved significantly (p<0.05) at 6 months post-CPF. The proportions of 10 periodontal pathogens and the proportions of red and orange complexes decreased at 6 months.

CONCLUSION

In conclusion, CPF can induce beneficial effects on the composition of the subgingival microbiota after 6 months.