In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite Restorations
Table 1
Condition of the specimens before repair.
Group
Restoration zone
Fiber layer present
Fiber layer and resin composite absent (%)
Resin composite present (%)
Resin composite absent (%)
(A) Restorations with woven FRC basing ()
Palatal cusp(1)
100
0
0
Step(2)
0
100(5)
0
Mesial/distal box(3)
7
50(5)
43
Buccal cusp(4)
0
48(6)
52
(B) Restorations with unidirectional FRC basing ()
Palatal cusp(1)
93
0
7
Step(2)
11
89
0
Mesial/distal box(3)
17
50(7)
33
Buccal cusp(4)
0
74(8)
26
(1)Corresponds with areas 1, 2, and 3 of Figure 2. (2)Corresponds with area 5 of Figure 2. (3)Corresponds with areas 4 and 6 of Figure 2. (4)Corresponds with areas 7, 8, and 9 of Figure 2. (5)43% loose fiber layers. (6)20% loose fiber layers. (7)11% loose fiber layers. (8) 35% loose fiber layers.
