Abstract
Objective
This study aimed to systematically review clinical trials about the effect of statins as adjunct to mechanical periodontal therapy, on probing pocket depth, clinical attachment level, and intrabony defects, in comparison to mechanical periodontal therapy alone or in association with placebo.
Material and methods
Three databases were searched for controlled clinical trials that used any locally delivered or systemically statin as a sole adjunctive therapy to mechanical periodontal treatment. Weighted mean differences between baseline and 6 months after periodontal treatment for clinical attachment level (CAL), probing pocket depth (PPD), and intrabony defect (IBD) were calculated. A high heterogeneity was detected. Therefore, a meta-regression adjusted for type of statin and year of publication was performed.
Results
Fifteen studies were included in the systematic review, and ten studies were included in the meta-analysis. In the meta-regression, the adjunct use of simvastatin, rosuvastatin, and atorvastatin additionally reduced PPD in comparison to mechanical periodontal therapy and a placebo gel (2.90 ± 0.35, 3.90 ± 0.77, 3.06 ± 0.71 mm, respectively; p < 0.05). Regarding the resolution of IBD, simvastatin and rosuvastatin significantly improved in comparison to control group (0.89 ± 0.35 and 1.93 ± 0.77 mm, respectively; p < 0.05). No statistically significant difference was found between the statins for both PPD and IBD (p < 0.05). Regarding CAL gain, simvastatin provided a statistically significant improvement as compared to the control group (2.02 ± 0.79 mm; p = 0.043).
Conclusions
The use of statins, used as sole adjuncts to mechanical periodontal treatment, improved the periodontal parameters. In the quantitative analyses, simvastatin was the only drug that showed additional benefits in all evaluated parameters.
Clinical relevance
Statins promote significantly clinical periodontal improvements when administered in association with non-surgical scaling and root planning (SRP), when compared to SRP alone or in association with a placebo.
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Figure S1
Forest plot of PPD reduction. (GIF 25 kb)
Figure S2
Funnel plot of the risk of bias analysis of pocket depth at 6-months follow-up. (GIF 10 kb)
Figure S3
Cumulative meta-analysis of pocket depth at 6-months follow-up. (GIF 17 kb)
Figure S4
Forest plot of IBD decrease. (GIF 18 kb)
Figure S5
Funnel plot of the risk of bias analysis of intrabony defect at 6-months follow-up. (GIF 7 kb)
Figure S6
Cumulative meta-analysis of intrabony defect at 6-months follow-up. (GIF 2 kb)
Figure S7
Forest plot of CAL gain. (GIF 18 kb)
Figure S8
Funnel plot of the risk of bias analysis of clinical attachment level at 6-months follow-up. (GIF 9 kb)
Figure S9
Cumulative meta-analysis of clinical attachment level at 6-months follow-up. (GIF 17 kb)
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Muniz, F.W.M.G., Taminski, K., Cavagni, J. et al. The effect of statins on periodontal treatment—a systematic review with meta-analyses and meta-regression. Clin Oral Invest 22, 671–687 (2018). https://doi.org/10.1007/s00784-018-2354-9
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DOI: https://doi.org/10.1007/s00784-018-2354-9