TheoryFree NBDHE Dental Hygiene Prep Practice Test PDF
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Free NBDHE Dental Hygiene Prep PDF with 30 questions
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The PDF includes 30 NBDHE Dental Hygiene Prep questions with answers and explanations.
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Q1The patient mentions feeling a rough surface on the occlusal aspect of her molar teeth. Which teeth are most likely to have a natural central groove? Please refer to the "details" for more context.
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✓ Correct answer: Permanent molars
Permanent molars typically have a central groove running mesiodistally across the occlusal table, which assists in efficient chewing and grinding of food.
Q2Based on the clinical details provided, what is the likely class of cavity found on tooth #14 according to Black's classification?
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✓ Correct answer: II
Class II caries are found on the proximal surfaces of premolars and molars and are often associated with areas adjacent to the contact points. This type of decay is not found on the incisors or canines, positioning them distinctly within Black's classification system.
Q3Given the following details, which vitamin is crucial for the patient's gum health during her orthodontic treatment? Attribute Details Age 16 Sex F Height 5'7" Weight 145 B/P 111/76 Chief Complaint "I'm unhappy with the way my teeth look. I am about to get braces. My orthodontist told me to have my teeth cleaned and cavities filled before he will put the braces on my teeth." Medical History The patient has asthma. Her last attack was 8 months ago. Current Medications Albuterol prn Dental History The patient has not been seen for 2 years. At her last appointment her teeth were cleaned and decay was diagnosed as a small DO on #29. Social History The patient is a student at the local high school. She plays trumpet in the school band.
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✓ Correct answer: Vitamin C
Vitamin C is essential for the health of gums, especially in patients undergoing orthodontic treatment, as it helps maintain the integrity of connective tissues and prevents gum disease.
Q4During a dental examination, the clinician notices a unique ridge called the 'cervical ridge' on a tooth. Which tooth would this most likely be on? Refer to the details for any needed information.
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✓ Correct answer: Maxillary central incisor
The cervical ridge is a significant enamel ridge seen on the facial surface of the maxillary central incisor, located near the cervical area, which is its identity.
Q5After using her fluoride mouth rinse, what should the patient be advised to do according to the details?
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✓ Correct answer: Do not eat or drink for 30 minutes
Avoiding food and drink for 30 minutes after using a fluoride mouth rinse allows the fluoride to remain in contact with the teeth for a longer duration, enhancing its effectiveness in preventing dental caries.
Q6The patient exhibits a white spot lesion on several upper anterior teeth, indicating early demineralization. Which fluoride application method would be most appropriate to reverse this condition? Refer to the details for relevant patient information.
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✓ Correct answer: Topical fluoride varnish
Topical fluoride varnish is the most effective method to treat early demineralization by promoting remineralization of enamel. Other methods, like systemic supplements, do not have a direct impact on surface-level lesions.
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