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 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 patient in the photo has:
(A). Geographic tongue(B). Oral candidiasis(C). Median rhomboid glossitis(D). Smooth tongueGeographic 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 oral...  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 foramenThe mental nerve is a terminal branch of the inferior alveolar nerve that exits through themental foramenlocated on the...  Read More
Q: What is the largest cranial nerve?
(A). First(B). Seventh(C). Sixth(D). FifthThere 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 nerveThe infraorbital nerve block anesthetizes the infraorbital nerve branch that passes through the infraorbital foramen andsplits intothe anterior superior alveolar...  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 following drugs cause pupil dilation EXCEPT:
(A). Meth(B). Cocaine(C). LSD(D). MorphineKeyword: dilationThe pupil is constricted or dilated by the smooth muscle in theiris. Increased release of acetylcholine by theparasympatheticnervous system (rest and digest reaction) causescontractionof thecircularsmooth muscle. This makes the pupil (the...  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: enamelFirst of all, what ispH? pH is the symbol ofhydrogen ion concentrationexpressed in numbers, corresponding to the acidity or alkalinity of an aqueous solution. The range is from 0 (pure acid) to 14 (pure base). Therefore, the lower...  Read More
Q: The cervical area has ____ vertebrae.
(A). 5(B). 7(C). 9(D). 12Keyword: 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). 7When someone gets an...  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
Q: Solar cheilitis is more common in:
(A). Immunocompromised patients(B). Dark-skinned adults(C). Patients undergoing cancer therapy(D). Fair-skinned adultsSolar cheilitis, also calledactinic cheilitisoccurs more commonly infair-skinnedindividuals. Here are some more characteristics(bullet point style, that's what we like at StudentRDH...  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). TwelfthKeywords: senses, anterior thirdThis 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 are12 cranial nerves, like a dozen...  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 mmKeyword: recessionClinical 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...  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 indicatedThis 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. Buttossthat! The newest guidelines from...  Read More
Q: The parotid gland secretes saliva through which duct?
(A). Wharton's duct(B). Stensen's duct(C). Bartholin's ductDucts 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). XerostomiaMetronidazole is an anti-infective drug (antibiotics) that is used in dentistry to treatinfectionscaused by anaerobes organisms andaggressive periodontitis. The oral side effects of metronidazole include: Metallic...  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 IIIWhen evaluating occlusion, Angle’s classification is often used. This classification is based on the relationship between themesiobuccal cusp of the maxillary first molarand thebuccal groove of the mandibular first molar. Class I: MB cusp of the max...  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 aboveFirst of all, what is ahematoma? A hematoma is theoutflow of bloodinto extravascular spaces. In dentistry, a hematoma can occur when the needle damages the blood vessels during an injection. The...  Read More
Q: Dentin formed in response to injury is called:
(A). Primary dentin(B). Secondary dentin(C). Tertiary dentinKeyword: injuryDentin comprises themainportion 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 calledprimarydentin. The dentin that forms...  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 canThe 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 Bradycardiarefers to aslowerthan normal heart rate (under 60 beats per minute) Tachycardiarefers to afasterthan normal heart rate...  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 asflatagainst the tooth surface as possible (0-40°). For scaling, the face of the instrument is at 45-90° with an...  Read More
Q: A black line stain is generally related to:
(A). Chlorhexidine(B). Clean mouth(C). Black tea(D). TobaccoBlack line stainis usually related to acleanmouth. It is anextrinsic stainthat can be removed. Some scientific research suggests that it is associated with iron compounds (ferric sulfide) and betel leaf chewing habits. The bacteria found...  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 Themodeis the value that ismostfrequently observed. In this case, 85 is observed 3 times. Themedianis the number that separates the data intotwo halves. (If there are two middle numbers, get their average). In this case, the median is also 85. Themeanis...  Read More
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