In which of the following ways could an ultrasonic working end cause an undesirable surface alteration?

Question

Quizplus · Accepted Answer

Striations in the root surface could occur if the point is adapted to the tooth. Also, sensitivity could result. The point is pointed so it is contraindicated for adaptation. A power setting that is too low will not cause undesirable surface alterations; however, the power may not be high enough to remove the type of deposit present depending on its size and tenacity. Strong water spray will not have an effect on the tooth surface. Light pressure on the tooth surface is what is recommended. Too much pressure could cause undesirable surface alterations. The working end of the insert is adapted to the surface of the enamel or cementum at a 15-degree angle or less to prevent any undue striations from occurring to the tooth structure, particularly cementum covering the root.

In Which of the Following Ways Could an Ultrasonic Working