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. 2015 Apr 17;2015(4):CD004622. doi: 10.1002/14651858.CD004622.pub3

4. FMS versus control: change in BOP.

Tooth type:
 Single‐rooted,
 Multi‐rooted,
 or Both Baseline pocket depth (mm) Time
 (Months) Number
 of studies (Participants) Mean difference
 (Random‐effects meta‐analysis) Heterogeneity
 (P value; I2)
Both 5‐6 3/4 2 (61) ‐8.05 [‐30.25, 14.16];(P = 0.48) (P = 0.02); I² = 80%
Both > 6 3/4 3  (77) ‐0.33 [‐7.70, 7.04]; (P = 0.93) (P = 0.51); I² = 0%
Both 5‐6 6/8 2 (57) ‐4.94 [‐16.59, 6.72]; (P = 0.41) (P = 0.87); I² = 0%
Both > 6 6/8 2 (36) 10.22 [‐0.59, 21.03]; (P = 0.06) (P = 0.92); I² = 0%
Single‐rooted 5‐6 3/4 1 (16) 3.00 [‐2.43, 8.43]; (P = 0.28) Not applicable
Single‐rooted > 6 3/4 0 (0) Not estimable Not applicable
Single‐rooted 5‐6 6/8 2 (45) ‐3.06 [‐10.47, 4.35]; (P = 0.42) (P = 0.27); I² = 18%
Single‐rooted > 6 6/8 1 (29) ‐4.00 [‐20.17, 12.17];(P = 0.63) Not applicable
Multi‐rooted 5‐6 3/4 1 (16) 7.00 [4.54, 9.46];(P < 0.00001) Not applicable
Multi‐rooted > 6 3/4 0 (0) Not estimable Not applicable
Multi‐rooted 5‐6 6/8 2 (45) 2.38 [‐2.95, 7.71]; (P = 0.38) (P = 0.50); I² = 0%
Multi‐rooted > 6 6/8 1 (29) ‐4.00 [‐23.29, 15.29];(P = 0.68) Not applicable