Oral Crest Lengthening for Increasing Removable Denture Retention by Means of CO₂ Laser

Table 1

Results of statistical analysis for all groups are shown. Means are statistically different except for means of vestibular lengthening results at 6 and 10 weeks.

ANOVA test
value	<0.0001
value summary	***
Are means significantly different? ()	Yes
Number of groups	4
	42,44
square	0,3189
Newman-Keuls multiple comparison test	Mean difference		Significant? < 0.05?	Summary
L-Laser-10 weeks vs L	−4.170	13.24	Yes	***
L-Laser-10 weeks vs L-Laser-2 weeks	−2.810	8.922	Yes	***
L-Laser-10 weeks vs L-Laser-6 weeks	−0.1400	0.4445	No	ns
L-Laser-6 weeks vs L	−4.030	12.80	Yes	***
L-Laser-6 weeks vs L-Laser-2 weeks	−2.670	8.477	Yes	***
L-Laser-2 weeks vs L	−1.360	4.318	Yes	**