Diederik Hentenaar

67 Erythritol air-polishing in non-surgical peri-implantits treatment Table 4. Distribution of sites with BoP in implants with pocket depths < 5mm at 3, 6, 9 and 12 months N = number of successfully treated implants Sites with BoP T3 (N = 23) T6 (N = 19) T9 (N = 23) T12 (N = 23) N (%) N (%) N (%) N (%) 0 out of 6 1 (4.3) 5 (26.3) 9 (39.1) 6 (26.1) 1 out of 6 7 (30.4) 2 (10.5) 6 (26.1) 6 (26.1) 2 out of 6 10 (43.5) 7 (36.8) 6 (26.1) 5 (21.7) 3 out of 6 3 (13.0) 4 (21.0) 1(4.3) 5 (21.7) 4 out of 6 2 (8.7) 1 (5.3) 1(4.3) 1 (4.3) 5 out of 6 0 (0.0) 0 (0.0) 0 (0.0) 0 (0.0) 6 out of 6 0 (0.0) 0 (0.0) 0 (0.0) 0 (0.0) Table 5. Generalized linear mixed model outcomes for mean difference in BoP, SoP, Plq, PPD and MBL between both groups at T3, using the ultrasonic therapy as reference arm. Crude analysis¶ Adjusted analysis§ Outcome variable β (95% CI) p -value β (95% CI) p -value Mean BoP † -0.037 (-0.147; 0.073) 0.380 -0.023 (-0.165; 0.119) 0.746 Mean SoP ‡ 0.048 (-0.048; 0.143) 0.320 0.059 (-0.015; 0.134) 0.114 Mean Plq ‡ 0.034 (-0.103; 0.171) 0.623 -0.009 (-0.154; 0.136) 0.897 Mean PPD ‡ 0.054 (-0.253; 0.361) 0.728 0.140 (-0.249; 0.529) 0.478 MBL † 0.126 (-0.370; 0.623) 0.618 0.239 (-0.296; 0.775) 0.380 † Normal distributed data analysed with linear model distribution ‡ Non-normal distributed data analysed with gamma distribution ¶ Adjusted for baseline and time § Adjusted for baseline, time, smoking, history of periodontitis, mean periodontal full mouth plaque score at T3 and type of suprastructure. No difference in mean pain/discomfort level (VAS scores) was found between both groups. However, patients reported low VAS scores for both therapies (air-polishing (2.1 (±1.9), ultrasonic (2.6 (±1.9), p = 0.222) as well as low periodontal pain/discomfort scores (VAS score ai-polishing (1.0 (±1.1) versus ultrasonic 1.4 (±1.5) respectively, p = 0.425). No significant difference in midbuccal recession was found between both groups, but both groups showed a slight increase in recession (air-polishing group 7.2 mm (±2.0) to 7.4mm (±2.0), ultrasonic group 6.6 (±1.8) to 6.7mm (±1.9), p = 0.552). Treatment of both therapies went uneventful; no emphysema could be detected after air-polishing treatment or any adverse reaction to ultrasonic treatment was reported. 3