Effect of Ferrule Location on Fracture Resistance of Maxillary Premolars: An In Vitro Study

Table 1

Mean fracture resistances and SD_s of all groups using one-way ANOVA (N).

Groups	Min	Max	Mean ± SD	P-value
CF	918.00	1,438.00	1,143.84 ± 170.97^a
WF	362.60	687.00	514.89 ± 108.84^b
BF	719.90	1,116.00	933.67 ± 126.04^c
LF	404.10	1,066.00	722.89 ± 245.30^bc	<0.001
MF	394.30	943.40	617.54 ± 174.47^b
BLF	570.00	1,126.30	874.01 ± 183.56^c

C, circumferential ferrule; W, without ferrule; B, buccal ferrule; L, lingual ferrule; M, mesial ferrule; B, buccal–lingual ferrule; same superscript letters show mean values with no statically significant difference between groups ().