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NDAEB EXAM 2025 WITH VERIFIED
CORRECT ANSWERS
The dentist finds decay on the mesial surface of the restoration on tooth 24. The dental assistant recognizes the cavity on the patient's 24 as: - correct answers ✔✔recurrent decay the dental assistant selects a foam tray for the application of the patient's topical fluoride. What should the dental assistant do with the trays tried in but not selected? - correct answers ✔✔discard the receptionist is called upon to help disinfect the operator after the first patient's appointment. What personal protective equipment should the receptionist use? - correct answers ✔✔utility gloves what is the benefit of increased folate in pregnant patients? - correct answers ✔✔red blood cell production
which products is used to treat dentin hypersensitivity? - correct answers ✔✔toothpaste what methods should the dental assistant teach oral hygiene instructions with a patient with Down syndrome? - correct answers ✔✔tell show do large exotoses located on the palate of a patient who requires a removable complete prosthesis? - correct answers ✔✔osteotomy which oral condition would indicate an adverse reaction to topical anesthetic? - correct answers ✔✔swelling the patient with dental insurance: - correct answers ✔✔carrier where should topical anesthetic be placed for tooth 18? - correct answers ✔✔maxillary vestibule which of the following nerve block injection techniques is most effective for a class V restoration on tooth 43? - correct answers ✔✔inferior alveolar
while placing the restorative material in the preparation of 36 MODB, where will the wedges be placed? - correct answers ✔✔mesial and distal the dental assistant will seat the patient in an upright position and assist with self medication using the inhaler/bronchodilator - correct answers ✔✔asthmatic attack a patient develops erythema of the skin - correct answers ✔✔latex allergy during the patient's procedure, what instrument should the dental assistant pass to the dentist to separate and retract the periosteum? - correct answers ✔✔periosteal elevator which radiopaque landmark may be seen on a maxillary central incisor radiographic image? - correct answers ✔✔nasal septum translucent, homogeneous, unstructured film - correct answers ✔✔acquired pellicle
over which artery will the dental assistant wrap the blood pressure cuff? - correct answers ✔✔brachial which of the following ingredients is commonly found in whitening systems? - correct answers ✔✔peroxide which radiopaque landmark may be seen on a maxillary anterior radiographic image? - correct answers ✔✔V shaped nasal spine how should a dental assistant place an image receptor to ensure a diagnostic periapical radiograph image of tooth 37? - correct answers ✔✔horizontal to the occlusal plane what is the correct sequence for preparing the operator for a patient? - correct answers ✔✔discard disposables and barriers, surface clean, surface disinfect, place new barriers which of the following polishing agents should be selected for teeth 13 to 23? - correct answers ✔✔a fluoridated prophy paste
which one of the following techniques would result in a polished look for plaster models? - correct answers ✔✔soak in soapy water, dry and wipe with a soft cloth which radiopaque landmark may be seen on a maxillary molar image? - correct answers ✔✔maxillary sinus which one of the following moisture barriers will be used on the lingual side to absorb the flow of saliva? - correct answers ✔✔cotton roll the purpose of flossing the patient's dentition following selective polishing is to: - correct answers ✔✔polish the inter proximal surfaces which radiolucent landmark may be seen on a mandibular anterior radiographic image? - correct answers ✔✔mental fossa the dentist who performs the service - correct answers ✔✔provider
the dental assistant will prepare the administration of epinephrine and oxygen - correct answers ✔✔angina pectoris how will the dental assistant prepare the relined denture before returning it to the patient? - correct answers ✔✔disinfect the denture a patient is having a benign neoplasm removed from the anterior portion of the palate - correct answers ✔✔nasopalatine nerve block an impacted canine required exposure for orthodontic treatment
- correct answers ✔✔gingivectomy the dental assistant polishes an amalgam filling using the high speed hand piece and a finishing bur - correct answers ✔✔an act of omission which of the following injection techniques will be used for 31 32 and 36 - correct answers ✔✔incisive nerve block
What are the conditions that would indicate the need for restorative dentistry? - correct answers ✔✔- initial or recurring decay
- replacement or failed restorations
- abrasion or wearing away of tooth structure True or False: Aesthetic dentistry is primarily devoted to improving the appearance of teeth; specific conditions that indicate a need for aesthetic treatment include the replacement of a partial denture. - correct answers ✔✔False The process of removing unhealthy tooth structure while leaving a limited amount of healthy structure for the tooth to maintain a restoration is known as cavity preparation. This process involves which of the following steps? - correct answers ✔✔- initial preparation
- outline, resistance, retention, convenience form
- final preparation
Responsibilities of the dental assistant in the restorative process can include performing expanded function and maintaining patient control. - correct answers ✔✔True Class II restorations are found on the.... - correct answers ✔✔Posterior teeth The usual material of choice for class III and Class IV restorations is ... - correct answers ✔✔Composite Resin The Class V restoration is classified as a smooth surface filling and can be found on the... - correct answers ✔✔- incisors
- canines
- premolars When are retention pins used as a part of the direct restorative process? - correct answers ✔✔- when decay has extended beyond the normal size and shape of the cavity preparation
- when a stronger system for retaining and supporting the restoration is needed
- when one or more cusps of the tooth is missing
The class II restoration requires a matrix band to act as an artificial wall that must make proper contact with the adjacent tooth; this is accomplished by... - correct answers ✔✔- using a wedge
- contouring the centre of the matrix band in the proximal contact area
- the dentists design of the inter proximal cavity preparation The matrix is used for anterior CR or GI restorations... - correct answers ✔✔Clear Plastic Coronal Polishing is a technique used: - correct answers ✔✔- to remove plaque and stains from coronal surfaces of the teeth
- before placement of dental sealants and orthodontic bands
- before placement of the dental dam and before acid etching Patients at high risk for caries or with areas of thin demineralized enamel are contraindications for coronal polishing - correct answers ✔✔True
Coronal polishing is the complete removal of calculus, debris, stains and plaque from the teeth - correct answers ✔✔False Exogenous stains are caused by an environmental source and are classified into subdivisions, including which of the following: - correct answers ✔✔- Intrinsic stains
- Extrinsic stains Extrinsic stains can be removed from the teeth by: - correct answers ✔✔- air-powder polishing
- rubber cup polishing
- bristle brushes The ultrasonic scaler is needed for a coronal polish... - correct answers ✔✔False Disclosing solution can be used for: - correct answers ✔✔- identifying areas of plaque
- evaluating the effectiveness of the polishing
A general tip for sealant materials is to store them in a refrigerator: - correct answers ✔✔False The first step in placing dental sealants is to: - correct answers ✔✔clean the surface A sealant that is polymerized by chemical reactions is called: - correct answers ✔✔Self-Cured Self-Cured sealant materials are supplied as a two-part system that includes: - correct answers ✔✔- a base
- a catalyst Dental sealants should be used as part of a preventative program that includes: - correct answers ✔✔- fluorides
- dietary considerations
- plaque control Enamel that has been etched has the appearance of being: - correct answers ✔✔frosty
Antidepressants are often used in dentistry to alleviate or reduce anxiety and pain - correct answers ✔✔False The agents that provide a temporary numbing effect on nerve endings located on the surface of the oral mucosa are: - correct answers ✔✔Topical Anesthetics Topical anesthesia is available in the form of: - correct answers ✔✔- ointments & liquids
- sprays
- patches The most frequently used form of pain control used in dentistry is: - correct answers ✔✔Local Anesthesia ______ is added to local anesthetic agent to slow down the intake of the agent and increase the duration of action - correct answers ✔✔Vasoconstrictor The ____ the ratio, the higher the percentage of vasoconstrictor in the anesthetic agent - correct answers ✔✔Smaller
The parts of the anesthetic syringe include: - correct answers ✔✔- thumb ring, finger grip, and finger bar
- barrel and threaded tip
- harpoon and piston rod The colour-coding system for anesthetic cartridges allows the practitioner to select the correct anesthetic solution by distinguishing: - correct answers ✔✔- the correct ratio of solution
- the correct brand of solutions The lengths of the needles used in dentistry are: - correct answers ✔✔1 and 15/8 inches The gauge of the needle refers to the thickness of the needle; the larger the gauge, the _______ the needle - correct answers ✔✔thinner During the loading of an anesthetic syringe, the _____ is loaded first - correct answers ✔✔anesthetic cartridge
To be certain the anesthetic solution is not injected into a blood vessel, the dentist: - correct answers ✔✔- uses an aspirating syringe
- always aspirates before depositing any solution Anesthetic solutions are extremely effective for patients with a tooth or soft tissue infection.. - correct answers ✔✔False Parathesia, the condition in which numbness lasts after the effects of the local anesthetic solutions should have worn off, may be caused by: - correct answers ✔✔- contaminated anesthetic solution
- trauma/injury to nerve sheath during injection or surgery
- hemorrhage into/around nerve sheath Nitrous Oxide/Oxygen analgesia use in dentistry dates back to 1844 and is also known as: - correct answers ✔✔Inhalation sedation An advantage of using nitrous oxide/oxygen is that it is relatively simple to administer and easy to manage.. - correct answers ✔✔True
