Disadvantages of In-Office Whitening. 1  In-office bleaching is more expensive than take-home alternatives. 2  Its cost, on average, is $650, compared to $400 for take-home trays and under $100 for over-the-counter bleaching trays or whitening strips.
Planetary protection is a guiding principle in the design of an interplanetary mission, aiming to prevent biological contamination of both the target celestial body and the Earth in the case of sample-return missions.
Type B is known as a SAMI (Stress Absorbing Membrane Interlayer). There are many different types of interlayer in pavement preservation. FiberMat Type B is really the only one. The tensile strength of FiberMatÂ® has been proven to absorb pavement movements and strains. This layer will effectively flex instead of crack. Tests have concluded that FiberMatÂ® enhances the tensile strength and fatigue performance by 30% and wheel-track cracking rate by 300%. Propagation of cracks is delayed 3-4 fold in laboratory testing versus control specimens and indications of 10 or more times from field specimens.