الفهرس 
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Abstract
This study was designed to compare the fracture strength of CAD-Temp material and composite resin 3 unit bridge.
specially designed stainless steel dies were constructed with the average
dimentions of the maxillary first premolar, and maxillary first molar following
the principles of tooth reduction for clinical abutment preparation, and having
a finish line of 1 mm rounded shoulder, and with convergence angle 8
degrees. Distance between both dies was adjusted according to the average
dimension of second maxillary premolar.
All samples will be divided into two groups
Group (1):10 bridges constructed from CAD-temp restorative materials.
Group (2):10 bridges constructed from composite resin restorative
materials.
Duplication of the metal dies into Epoxy Resin dies
-Testing procedures:
Fracture Strength
All samples were individually & vertically mounted on the
Universal Testing Machine (Model LRX-plus; Lloyd Instruments Ltd.,
Fareham, UK) with a load cell of 5 kN and data were recorded using
computer software
Samples were statically compression loaded until fracture at a
crosshead speed of 0.5 mm/min. Then the data obtained were
collected, tabulated and subjected to statistical analysis.
Conclusions:
Under the limitations of this in vitro study, the following conclusions can
be drawn:
CAD/CAM fabricated FPDs exhibit a lower mechanical strength
compared to directly fabricated FPDs, when manufactured of the same
material