National Dental Hygiene Board Exam + Local Anesthesial Dental Hygiene Board Exams Review Online Courses
National Dental Hygiene Board Exam + Local Anesthesial Dental Hygiene Board Exams Review Online Courses
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Claire J
Claire J

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Q: Which radiographic error caused this “flat” smile?
(A). Lead collar is above the line(B). The chin is tipped down too far(C). The chin is tipped up too far(D). The patient’s head is twistedThewill show you panoramic radiographs and ask you what type of error was made. There is a whole list of errors that you need to memorize! As we know,...  Read More
Q: Using radiation measuring system conversion, 1 Gray is equal to how many rad?
(A). 100(B). 300(C). 1000(D). 1,000,000When measuring radiation, there are two types of systems used –Standard(traditional system) andSystem International(SI, newer system). Roentgen (Standard system), Coulomb (C/kg) (SI system): measure the exposure (quantityof ionization in the air). The...  Read More
Q: The receptor size usually required for a full-mouth series on a six-year-old patient is:
(A). Size 1(B). Size 0(C). Size 3(D). Size 4Keywords: six-year-old Size 0 is the smallest receptor and is used for children Size 1 is larger than size 0 and is used for children’s dentition and adult anterior teeth Size 2 is larger than size 1 and is used on adults (BWX and PA) ...  Read More
Q: The radiolucency in the image is:
(A). Oral ulcer(B). Mandibular foramen(C). Mental foramen(D). Incisive foramenIn order to solve this, we have to examine thelocationof the radiolucency. In this image, it isbelow the second premolarbut detached from the root. Because it isdetachedfrom the roots, we already know that it is NOT a...  Read More
Q: The image highlights which type of caries?
(A). Recurrent caries(B). Class Icaries(C). Class Vcaries(D). Class IVcariesThe magnifier points at a dark area “under” the restoration. Thosecariesthat come back after the tooth has been treated with restorations are calledrecurrentcaries. This is not uncommon, and therefore it is...  Read More
Q: The arrows are pointing at:
(A). Fusion(B). Concrescence(C). Gemination(D). Dens indente Dens indente(also calleddensinvaginatus)isformed as the enamel organ goes into the crown of a tooth before mineralization is completed. Radiographically, a tooth-like structure appears within the crown. Due to the irregularities of the...  Read More
The arrows are pointing at:
(A). Fusion(B). Concrescence(C). Germination(D). Dens in dente Dens in dente(also calleddens invaginatus) is formed as the enamel organ goes into the crown of a tooth before mineralization is completed. Radiographically, a tooth-like structure appears within the crown.Due to the irregularities...  Read More

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