Clinical effect evaluation of the application of Er: YAG laser to peri-implantitis

To compare the effectiveness of an Er: YAG laser and mechanical debridement for the treatment of peri-implantitis.

22 cases of peri-implantitis patients were divided into 2 groups according to the single blind randomized control principle. The experimental group was treated by Er: YAG laser irradiation, the laser energy was set to 100 mJ/pulse, frequency of 10 Hz; plastic curette and 0. 2% chlorhexidine antimicrobial therapy was used in the control group. Clinical periodontal index test including plaque index, bleeding index, probing depth and clinical attachment level was conducted at baseline, 3 months and 6 months.

At baseline, the difference of clinical periodontal index between the experimental group and the control group had no statistical significance (P ＞ 0. 05). After 3 months of treatment (P ＜ 0. 01) and 6 months (P ＜ 0. 05), bleeding index, plaque index of test group and control group had significant difference. Probing depth was reduced by 3 and 6 months after treatment in both 2 groups, and the probing depth had significant difference (P ＜ 0. 05); while clinical attachment level value showed no statistical significance between the two groups (P ＞ 0. 05).

The research shows that the Er: YAG laser treatment can significantly improve peri implant inflammation level, effectiveness of peri-implantitis control is superior than the mechanical curettage treatment.