Most studies investigating the impact of oral contraceptives have been performed some
years ago, when the level of sexual hormones was greater than the actual
formulations.Objective The aim of this study was to evaluate the effects of current combined oral
contraceptives (COC) on periodontal tissues, correlating the clinical parameters
examined with the total duration of continuous oral contraceptive intake. Material and methods Twenty-five women (19-35 years old) taking combined oral contraceptives for at
least 1 year were included in the test group. The control group was composed by 25
patients at the same age range reporting no use of hormone-based contraceptive
methods. Clinical parameters investigated included pocket probing depth (PD),
clinical attachment level (CAL), sulcular bleeding index (SBI) and plaque index
(Pl.I). Data were statistically evaluated by unpaired t test, Pearson's
correlation test and Spearman's correlation test. Results The test group showed increased PD (2.228±0.011 x 2.154±0.012; p<0.0001) and
SBI (0.229±0.006 x 0.148±0.005, p<0.0001) than controls. No significant
differences between groups were found in CAL (0.435±0.01 x 0.412±0.01; p=0.11).
The control group showed greater Pl.I than the test group (0.206±0.007 x
0.303±0.008; p<0.0001). No correlation between the duration of oral
contraceptive intake, age and periodontal parameters was observed. Conclusions These findings suggest that the use of currently available combined oral
contraceptives can influence the periodontal conditions of the patients,
independently of the level of plaque accumulation or total duration of medication
intake, resulting in increased gingival inflammation.