Wear volumes of flowable and sculptable resin composite attachments and their correlation with retentive force of clear aligners: a laboratory study

Table 2 Means and SDs (mm³) of wear volume according to attachment area and composite

Area	Composite	Mean	SD	N	Area	Composite	Mean	SD	N	Area	Composite	Mean	SD	N
OM	Tetric	0.0090	0.0077	6	OMid	Tetric	0.0067	0.0091	6	OD	Tetric	0.0088	0.0048	6
	Beautifil	0.0099	0.0064	6		Beautifil	0.0066	0.0074	6		Beautifil	0.0079	0.0051	6
	Z350	0.0075	0.0061	6		Z350	0.0054	0.0064	6		Z350	0.0131	0.0076	6
	Total	0.0088	0.0064	18		Total	0.0062	0.0072	18		Total	0.0099	0.0061	18
MidM	Tetric	0.0134	0.0102	6	MidMid	Tetric	0.0100	0.0103	6	MidD	Tetric	0.0137	0.0070	6
	Beautifil	0.0138	0.0078	6		Beautifil	0.0053	0.0073	6		Beautifil	0.0100	0.0091	6
	Z350	0.0098	0.0086	6		Z350	0.0065	0.0113	6		Z350	0.0150	0.0139	6
	Total	0.0123	0.0086	18		Total	0.0073	0.0094	18		Total	0.0129	0.0100	18
GM	Tetric	0.0152	0.0139	6	GMid	Tetric	0.0125	0.0062	6	GD	Tetric	0.0173	0.0064	6
	Beautifil	0.0297	0.0226	6		Beautifil	0.0248	0.0118	6		Beautifil	0.0222	0.0134	6
	Z350	0.0324	0.0241	6		Z350	0.0313	0.0176	6		Z350	0.0345	0.0130	6
	Total	0.0258	0.0209	18		Total	0.0228	0.0144	18		Total	0.0247	0.0130	18

ISSN: 1472-6831