In order to safely and effectively anesthetize the PSA nerve, the hygienist should direct the needle at a 90-degree angle to the occlusal plane and a 90-degree angle to the long axis of the second maxillary molar. Bending the needle shank may be necessary to accomplish these needle angulations.a. The first statement is true; the second statement is false.b. The first statement is false; the second statement is true.c. Both statements are true.d. Both statements are false.

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