Additionally, the coefficient of thermal expansion of the restorative material should be comparable to the coefficient of thermal expansion of the tooth structure, since a significant difference between the two could result in thermal-induced stress at the cavity wall and subsequent marginal failure.
This study's objective was to assess how thermal stress affected the marginal integrity of restorative materials with various adhesive and thermal characteristics. As an alternative to clinical trials, which are expensive and time-consuming, evaluation of restorative materials under laboratory simulations of clinical function is frequently carried out. Thermal cycling regimens, which are in vitro techniques that subject the restoration and the tooth to extremely high temperatures, are frequently used in laboratory simulations to replicate thermal stresses that naturally occur in vivo.
Learn more about Thermal Stress here-
brainly.com/question/20309377
#SPJ4
Ceq in series is calculated by 1/C1 + 1/C2 + ....
While, in parallel, Ceq= C1 + C2 + ...
So the ratio is 1/Ceq = Ceq
Hello There!!
<h3><u>What is kinematics?</u></h3>
<h3>Answer</h3>
=> Let The Answer be "x"
________________________________
<h3><u>Name it's </u><u>father</u></h3>
<h3>Answer</h3>
=> He don't have a child so he is not a father
________________________________
<h3><u>Explain its </u><u>History</u></h3>
<h3>Answer</h3>
=> Kinematics is a part of science not history.
__________________________________
Hope this helps :D
Given that,
Bulk modulus
Change in volume
Edge
The volume of the cube at the ocean's surface will be
Where, a = edge
Put the value into the formula
We need to calculate the change in pressure
Using formula of pressure
Put the value into the formula
The pressure increases by for every meter of depth
We need to calculate the depth
Using formula for depth
Hence, The depth is 9.75 m.
Answer:
Lunar and solar eclipses occur with about equal frequency. Lunar eclipses are more widely visible because Earth casts a much larger shadow on the Moon during a lunar eclipse than the Moon casts on Earth during a solar eclipse. As a result, you are more likely to see a lunar eclipse than a solar eclipse.
For a total eclipse to take place, the sun, moon and Earth must be in a direct line. The second type of solar eclipse is a partial solar eclipse. This happens when the sun, moon and Earth are not exactly lined up. The sun appears to have a dark shadow on only a small part of its surface.
For a lunar eclipse to occur, the Sun, Earth, and Moon must be roughly aligned in a line