Results of an experimental study of subgingival cleaning effectiveness in the furcation area

Seidel, Miriam; Borenius, Hannah; Schorr, Susanne; Christofzik, David; Graetz, Christian

doi:10.1186/s12903-021-01736-4

BMC Oral Health

Table 2 Overview according to RCE (relative cleaning efficacy) in 3-rooted and 2-rooted molars with pairwise instrument comparisons

From: Results of an experimental study of subgingival cleaning effectiveness in the furcation area

Instrument	Overall RCE in %	RCE for furcation roof in %	RCE for all vertical root surfaces in %	TrT in s per tooth	Pairwise instrument comparison	p-value for RCE—overall	p-value for RCE—furcation roof surfaces	p-value for RCE—vertical root surfaces	p-value for TrT
3-rooted molars
LAPA-1 with supragingival nozzle	15.86 ± 17.75	13.86 ± 19.24	16.55 ± 17.97	130.57 ± 57.99	Versus LAPA-1 with subgingival nozzle	p < 0.001	p < 0.001	p < 0.001	p = 0.002
					Versus US	p < 0.001	p < 0.001	p < 0.0013	p < 0.001
					Versus AIR	p < 0.001	p < 0.001	p < 0.001	p < 0.001
LAPA-2 with supragingival nozzle	13.29 ± 16.20	10.94 ± 16.30	14.04 ± 16.66	142.57 ± 54.33	Versus LAPA-1 with supragingival nozzle	p > 0.05	p > 0.05	p > 0.05	p = 1.000
					Versus LAPA-1 with subgingival nozzle	p < 0.001	p < 0.001	p < 0.001	p = 0.011
					versus US	p < 0.001	p < 0.001	p < 0.001	p < 0.001
					Versus AIR	p < 0.001	p < 0.001	p < 0.001	p < 0.001
LAPA-1 with subgingival nozzle	29.60 ± 20.99	32.25 ± 25.63	29.00 ± 21.49	220.29 ± 58.82	Versus US	p > 0.05	p > 0.05	p > 0.05	p = 0.190
					Versus AIR	p > 0.05	p > 0.05	p > 0.05	p = 0.694
LAPA-2 with subgingival nozzle	11.22 ± 12.48	9.83 ± 16.69	11.91 ± 12.63	267.82 ± 111.41	Versus LAPA-2 with supragingival nozzle	p > 0.05	p > 0.05	p > 0.05	p < 0.001
					Versus LAPA-1 with supragingival nozzle	p > 0.05	p > 0.05	p > 0.05	p < 0.001
					Versus LAPA-1 with subgingival nozzle	p < 0.001	p < 0.001	p < 0.001	p = 1.000
					Versus US	p < 0.001	p < 0.001	p < 0.001	p = 1.000
					Versus AIR	p < 0.001	p < 0.001	p < 0.001	p = 1.000
US	33.44 ± 20.72	28.30 ± 23.52	34.82 ± 21.55	317.64 ± 128.28	Versus AIR	p > 0.05	p > 0.05	p > 0.05	p = 1.000
AIR	36.71 ± 21.31	32.25 ± 24.94	36.77 ± 21.78	289.07 ± 107.40
2-rooted molars
LAPA-1 with supragingival nozzle	56.88 ± 30.07	52.67 ± 34.14	59.07 ± 30.31	127.86 ± 68.66	Versus LAPA-1 with subgingival nozzle	p > 0.05	p > 0.05	p > 0.05	p = 0.873
					Versus US	p > 0.05	p = 0.017	p > 0.05	p = 0.004
					Versus AIR	p > 0.05	p > 0.05	p > 0.05	p = 0.006
LAPA-2 with supragingival nozzle	38.38 ± 25.50	33.73 ± 29.46	40.43 ± 25.65	151.57 ± 110.58	Versus LAPA-1 with supragingival nozzle	p = 0.030	p > 0.05	p = 0.035	p = 1.000
					Versus LAPA-1 with subgingival nozzle	p < 0.001	p < 0.001	p < 0.001	p = 1.000
					Versus US	p > 0.05	p > 0.05	p = 0.036	p = 0.029
					Versus AIR	p < 0.001	p < 0.001	p < 0.001	p = 0.045
LAPA-1 with subgingival nozzle	71.65 ± 24.84	66.11 ± 29.62	74.23 ± 23.84	200.0 ± 91.63	Versus US	p > 0.05	p > 0.05	p > 0.05	p = 1.000
					Versus AIR	p > 0.05	p > 0.05	p > 0.05	p = 1.000
LAPA-2 with subgingival nozzle	21.62 ± 16.11	17.93 ± 19.52	23.20 ± 15.50	249.36 ± 74.32	Versus LAPA-2 with supragingival nozzle	p > 0.05	p > 0.05	p > 0.05	p = 0.038
					Versus LAPA-1 with supragingival nozzle	p < 0.001	p < 0.001	p < 0.001	p = 0.005
					Versus LAPA-1 with subgingival nozzle	p < 0.001	p < 0.001	p < 0.001	p = 1.000
					versus US	p < 0.001	p = 0.002	p < 0.001	p = 1.000
					Versus AIR	p < 0.001	p < 0.001	p < 0.001	p = 1.000
US	56.14 ± 16.22	43.85 ± 25.12	60.98 ± 17.29	262.93 ± 98.05	Versus AIR	p > 0.05	p = 0.017	p > 0.05	p = 1.000
AIR	73.57 ± 14.73	65.85 ± 21.01	77.14 ± 14.49	245.86 ± 60.43

Average values and p-values are shown. All significant p-values are highlighted with bold font

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