Gingivitis group NO pretreatment (430.60 ± 67.97) NO postreatment (269.07 ± 53.08) CP group NO pretreatment (537.67 ± 80.06) NO postreatment (326.73 ± 41.03) Control group NO pretreatment (241.10 ± 83.72). This evidence concerns the gene CP and gingivitis.