The vast amount of breakdown of his tooth enamel and the black discoloration, I suspect tartar and tooth decay may be the primary cause of this deterioration
<h3>Tartar</h3>
A dentist will have to remove the build-up when tartar is the cause, typically by scraping the tartar off the teeth. The dentist may have to use ultrasonic instruments that use vibration to break up the tartar and make it easier to remove.
<h3>Tooth decay</h3>
In cases of decay, it's unlikely that a dentist will be able to improve the black teeth through a simple cleaning. they're going to instead need to remove the decayed portion of the tooth.
To learn more about Tooth decay.
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A combination of downward pressure AND friction. It occurs at the deeper layers of tissue resulting in cell deformation and cell death
Answer:
Antibodies are produced by __type B__ lymphocytes; cell-mediated immunity is provided by __type T__ lymphocytes.
Answer:
with the help of drinking water
Answer:
Option (b).
Explanation:
Pulmonary ventilation is the mechanism of respiration in which the oxygen is inhaled in the body and carbon dioxide is exhaled out due to the pressure difference in the lungs and the environment.
The surface tension in the alveoli is decreased by the presence of surfactant. The increase in the surface tension of the alveoli increase the force that will require the additional muscles to work properly.
Thus, the correct answer is option (b).