The Ablation Properties of CO₂ Laser Irradiating to Absorption Media: An In Vitro Study

Table 3

The comparisons of the differences of histologically affected borders by the groups.

Affected border	Group	Compared group	Mean difference	95% CI of the differences	𝑃 value
DV	1 Watt	2 Watt	−174.37	−649.58 to 300.85	0.639
		3 Watt	−762.48	−1237.70 to −287.26	0.001*
	2 Watt	1 Watt	174.37	−300.85 to 649.58	0.639
		3 Watt	−588.71	−1063.33 to −112.89	0.013*
	3 Watt	1 Watt	762.48	287.26 to 1237.79	0.001*
		2 Watt	588.71	112.89 to 1063.33	0.013*
DB	1 Watt	2 Watt	−107.94	−360.09 to 144.21	0.546
		3 Watt	−410.10	−662.26 to −157.95	0.001*
	2 Watt	1 Watt	107.94	−144.21 to 360.09	0.546
		3 Watt	−302.16	−554.32 to −50.01	0.016*
	3 Watt	1 Watt	410.10	157.95 to 662.26	0.001*
		2 Watt	302.16	50.01 to 554.32	0.016*
WB	1 Watt	2 Watt	−218.17	−293.40 to −142.94	<0.001*
		3 Watt	−247.93	−323.15 to −172.70	<0.001*
	2 Watt	1 Watt	218.17	142.94 to 293.40	<0.001*
		3 Watt	−29.76	−104.98 to 45.47	0.595
	3 Watt	1 Watt	247.93	172.70 to 323.15	<0.001*
		2 Watt	29.76	−45.47 to 104.98	0.595

*: 𝑃-value < 0.05.
Depth of vaporization: DV.
Depth of vertically affected border: DB.
Width of horizontally affected border: WB.