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
StudentRDH offers Local Anesthesia + National boards review solution. It features everything you need to pass the NBDHE: 23 subjects, 2000 questions, mock exam. Study on your phone, tablet, and computer. "StudentRDH is BETTER than anything else!"
Blog By:
Claire J
Claire J

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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 4 Keywords: 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...  Read More
Q: The radiolucency in the image is:
(A). Oral ulcer (B). Mandibular foramen (C). Mental foramen (D). Incisive foramen In order to solve this, we have to examine the location of the radiolucency. In this image, it is below the second premolar but detached from the root. Because it is detached from the roots, we already know that it...  Read More
Q: The patient in the photo has:
(A). Geographic tongue (B). Oral candidiasis (C). Median rhomboid glossitis (D). Smooth tongue Geographic tongue and median rhomboid glossitis… For some reason, the two get mixed up in our head sometimes. Let’s review them a little more closely today and perfect our knowledge about...  Read More
Q: The mental nerve block anesthetizes the:
(A). Lingual gingiva of the mandible (B). Facial gingiva of the mandibular anterior teeth (C). Buccal gingiva of the mandibular molars (D). All teeth posterior to the mental foramen The mental nerve is a terminal branch of the inferior alveolar nerve that exits through the mental foramen located...  Read More
Q: What is the largest cranial nerve?
(A). First (B). Seventh (C). Sixth (D). Fifth There are 12 cranial nerves: olfactory (I), optic (II), oculomotor (III), trochlear (IV), trigeminal (V), abducens (VI), facial (VII), vestibulocochlear (VIII), glossopharyngeal (IX), vagus (X), accessory (XI), and hypoglossal (XII). Among all of those,...  Read More
Q: The infraorbital nerve block does NOT affect the:
(A). Anterior superior alveolar nerve (B). Middle superior alveolar nerve (C). Posterior superior alveolar nerve (D). Infraorbital nerve The infraorbital nerve block anesthetizes the infraorbital nerve branch that passes through the infraorbital foramen and splits into the anterior superior...  Read More
Q: The image highlights which type of caries?
(A). Recurrent caries (B). Class I caries (C). Class V caries (D). Class IV caries The magnifier points at a dark area “under” the restoration. Those caries that come back after the tooth has been treated with restorations are called recurrent caries. This is not uncommon, and...  Read More
Q: The following drugs cause pupil dilation EXCEPT:
(A). Meth (B). Cocaine (C). LSD (D). Morphine Keyword: dilation The pupil is constricted or dilated by the smooth muscle in the iris. Increased release of acetylcholine by the parasympathetic nervous system (rest and digest reaction) causes contraction of the circular smooth muscle. This makes...  Read More
Q: The critical pH for enamel demineralization is:
(A). pH 4.5-5.5 (B). pH 5.5-6 (C). pH 6-6.7 (D). pH 7+ Keyword: enamel First of all, what is pH? pH is the symbol of hydrogen ion concentration expressed in numbers, corresponding to the acidity or alkalinity of an aqueous solution. The range is from 0 (pure acid) to 14 (pure base). Therefore,...  Read More
Q: The cervical area has ____ vertebrae.
(A). 5 (B). 7 (C). 9 (D). 12 Keyword: cervical There are 7 cervical vertebrae. There are 12 thoracic vertebrae. There are 5 lumbar vertebrae. There are 4-5 modular pieces in the coccygeal that are fused. In adults, this segment may be fused with the sacrum. Answer: (B). 7 When...  Read More
Q: The arrows are pointing at:
(A). Fusion (B). Concrescence (C). Gemination (D). Dens in dente Dens in dente (also called dens 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...  Read More
Q: Solar cheilitis is more common in:
(A). Immunocompromised patients (B). Dark-skinned adults (C). Patients undergoing cancer therapy (D). Fair-skinned adults Solar cheilitis, also called actinic cheilitis occurs more commonly in fair-skinned individuals. Here are some more characteristics (bullet point style, that's what we like at...  Read More
Q: The senses of the anterior third of the tongue are provided by which cranial nerve?
(A). Fifth (B). Ninth (C). Eighth (D). Twelfth Keywords: senses, anterior third This is a very difficult question in my opinion. But we will dissect it together so you are more ready for the dental hygiene board exam (NBDHE, NDHCE). First of all, we know that there are 12 cranial nerves, like a...  Read More
Q: Probe depth is 7 mm, recession is 2 mm. What is the CAL?
(A). 2 mm (B). 5 mm (C). 7 mm (D). 9 mm Keyword: recession Clinical attachment level (or loss, CAL) is a more accurate indicator of the periodontal support around a tooth than probing depth alone. CAL is measured from a fixed point on the tooth that does not change, the CEJ. To calculate CAL, two...  Read More
Q: Patients with artificial joints require premedication before dental treatments for:
(A). The first 6 months (B). The first 2 months (C). The first 2 years (D). Premedication is not indicated This is probably one of the most commonly asked questions by students at . At school, you may have been taught the “2 years, or for life” rule. But toss that! The newest...  Read More
Q: The parotid gland secretes saliva through which duct?
(A). Wharton's duct (B). Stensen's duct (C). Bartholin's duct Ducts are escape routes for the saliva and other types of secretion from glands. However, not all glands have ducts - some are ductless. Here is a summary of the major salivary glands and their ducts relevant to us #RDH #FutureRDH: ...  Read More
Q: Metronidazole (Flagyl) is related to the following oral side effects, EXCEPT:
(A). Black hairy tongue (B). Metallic taste (C). Gingival hyperplasia (D). Xerostomia Metronidazole is an anti-infective drug (antibiotics) that is used in dentistry to treat infections caused by anaerobes organisms and aggressive periodontitis. The oral side effects of metronidazole include: ...  Read More
Q: If the buccal groove of the mandibular first molar is distal to the mesiobuccal cusp of the maxillary first molar, what type of occlusion will the patient have?
(A). Class I (B). Class II (C). Class III When evaluating occlusion, Angle’s classification is often used. This classification is based on the relationship between the mesiobuccal cusp of the maxillary first molar and the buccal groove of the mandibular first molar. Class I: MB cusp of...  Read More
Q: How can you control a hematoma?
(A). Apply heat for 20 minutes (B). Apply ice for 2 minutes (C). Alternate ice and heat (D). All the above First of all, what is a hematoma? A hematoma is the outflow of blood into extravascular spaces. In dentistry, a hematoma can occur when the needle damages the blood vessels during an...  Read More
Q: Dentin formed in response to injury is called:
(A). Primary dentin (B). Secondary dentin (C). Tertiary dentin Keyword: injury Dentin comprises the main portion of the tooth. It is softer than enamel but harder than bone. There are different types of dentin: The dentin that forms when a tooth erupts is called primary dentin. The dentin...  Read More
Q: What is the chest compression rate for adult CPR?
(A). 50/min (B). 100/min (C). At least 100/min (D). As many as you can The basics of CPR has changed since 2010. Major changes for all rescuers, all of which are intended to simplify CPR for rescuers and improve bystander response, include: A change in the CPR sequence, from...  Read More
Q: Bradycardia refers to:
(A). Heart rate above 100 beats per minute (B). Heart rate under 60 beats per minute (C). Increased heart contraction force (D). Decreased heart contraction force Bradycardia refers to a slower than normal heart rate (under 60 beats per minute) Tachycardia refers to a faster than normal...  Read More
Q: The optimal blade angulation for the removal of deposits is:
(A). 25° to 45° (B). 45° to 60° (C). 60° to 80° (D). 90° to 120° For insertion of the working end into the sulcus/pocket, position the face as flat against the tooth surface as possible (0-40°). For scaling, the face of the instrument is at...  Read More
Q: A black line stain is generally related to:
(A). Chlorhexidine (B). Clean mouth (C). Black tea (D). Tobacco Black line stain is usually related to a clean mouth. It is an extrinsic stain that can be removed. Some scientific research suggests that it is associated with iron compounds (ferric sulfide) and betel leaf chewing habits. The...  Read More
Q: 80, 85, 67, 90, 86, 87, 85, 90, 83, 75, 89, 82, 82, 88, and 85. What is the mode?
(A). 75 (B). 80 (C). 85 (D). 90 The mode is the value that is most frequently observed. In this case, 85 is observed 3 times. The median is the number that separates the data into two halves. (If there are two middle numbers, get their average). In this case, the median is also 85. The...  Read More
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