Fracture Resistance of Endodontically Treated Maxillary Premolars Restored by Various Direct Filling Materials: An In Vitro Study

Table 1

The comparison of the average values for resistance between the groups.

	A	B	C	D	E	F	G	H
Mean	1289.00	181.75	445.38	645.88	355.13	352.00	191.38	572.00
SD	257.75	57.98	23.75	38.43	37.23	26.34	60.98	61.82
Min	972	113	405	584	300	326	124	475
Max	1700	267	468	688	404	404	277	617

variance ratio) = 100,034798,  P < 0,0001
A (intact), B (unfilled), C (composite oblique layering), D (composite cusp coverage), E (bulk fill), F (glass-ionomer), G (amalgam), H (proximal box cavity).