Maxillary Expansion: A Comparison of Damon Self-Ligating Bracket Therapy with MARPE and PAOO

Table 3

A comparison among the three study samples of posttreatment variables that were homogeneous at pretreatment.

	Post Tx mean			P sig.
	Damon	MARPE	PAOO	D-M	D-P	M-P
Arch perimeter	74.5	75.2	72,5	NS	NS	≤.05
Arch depth	27.1	25.7	27	≤.05	NS	≤.01
Right CCH	5.3	5.8	5	NS	NS	≤.01
Palatal vault height	18.6	18.4	17.1	NS	NS	NS
Palatal vault area	335.5	343.1	287.6	NS	≤.05	≤.01
Molar angulation	158	162	160.4	NS	NS	NS