Figure 1 Specimen fabrication for non-repair group. A: mold; B: glass slide; C: clamp; D: sample.
Figure 1 Specimen fabrication for non-repair group. A: mold; B: glass slide; C: clamp; D: sample.
Figure 2 Specimen fabrication for aged repair groups. A:broken part; B: repaired part; C: joint between two parts.
Figure 3 Specimen fabrication for immediate repair group. I:Fabrication of PVS template. A:prefabricated composite bar with the dimensions of 12.5×2×2 mm; II; injecting PVS material; B: Fabrication of a half-bars of provisional materials. III: PVS template with the dimensions of 12.5×2×2 mm; D: the fabricated half-bar of the sample, C: immediate repairing. E: repaired half-bar.
Figure 4 The effects of repair on flexural strength of three materials.
Figure 5 The effects of provisional material on flexural strength under different conditions
Brand Name |
Manufacturer |
Material type |
Shade |
Lot Number |
Tuff-Temp™ Plus |
Pulpdent Corp, Watertown, MA |
Rubberized-Urethane |
A2 |
150313 |
Integrity |
Dentsply, Milford, DE |
Bis-Acryl |
A2 |
150319 |
Jet |
Lang Dental Manufacturing Company, Wheeling, IL |
Methyl Methacrylate |
62 |
P-382015AH |
Table 1. Provisional restorative materials used in the study.
|
Non-Repair |
Immediate Repair |
Aged Repair |
Integrity |
102.93 (11.3) |
68.44 (9.1) |
62.11 (12.2) |
Tuff-Temp™ Plus |
56.10 (6.5) |
61.56 (7.1) |
51.77 (8.6) |
Jet |
85.10 (5.7) |
60.74 (7.9) |
44.24 (6.5) |
Table 2. Mean (SD) values for flexural strength test in all groups.
Source |
Sum of Squares |
df |
Mean Squares |
F-Ratio |
p Value |
Repair |
12568.992 |
2 |
6284.496 |
33.860 |
p<0.001 |
Material |
3140.279 |
1 |
3140.279 |
16.919 |
p<0.001 |
Table 3. Results of Two-way ANOVA.