FREE NBDE Ultimate Questions and Answers

Question 1

A patient presents with a white lesions on his buccal mucosa.
The lesion is 4mm x 4mm in size and has been present in the patient's mouth for 4 months.
Last week it became ulcerated and prompted the patient to see you.
What would appropriate management entail?

Accepted Answer

Excisional biopsy

Answer

Needle biopsy

Answer

Incisional biopsy

Answer

Continued monitoring

Answer

Exfoliative cytology

Question 2

A patients presents with a mandibular first molar that has a failing root canal. Recurrent decay underneath the crown has caused severe damage to the remaining tooth structure and re-infection of the root canal space. Due to remove the tooth.  What nerves would need to be blocked for surgical removal of this tooth?

Accepted Answer

Inferior alveolar, lingual, long buccal

Answer

Inferior alveolar, lingual

Answer

Inferior alveolar, lingual, mental

Answer

Interior alveolar, lingual, cervical

Answer

Inferior alveolar, mental, long buccal

Question 3

Of the following root fracture possibilities, which has the WORST prognosis?

Accepted Answer

Mobile vertical fracture

Answer

Coronal horizontal fracture

Answer

Mid-root horizontal fracture

Answer

Apical horizontal fracture

Question 4

You are performing endodontic therapy on an upper first molar, and a file is broken in the distobuccal canal. On radiograph, you discover the fragment is 2.5mm long and is wedged tightly in the apical portion of the root, but not extruding past the foramen. What should you do?

Accepted Answer

Inform the patient, complete the procedure and monitor

Answer

Refer immediately to an endodontist

Answer

Perform an apicoectomy

Answer

Extract the tooth

Question 5

In adolescents, when minor fractures occur to the permanent teeth, it is prudent to use which type of restoration?

Accepted Answer

Composite resin restorations

Answer

Full coverage crown

Answer

Amalgam fillings

Answer

Stainless steel crown

Question 6

Which instruments are used for finishing and polishing amalgam?

Accepted Answer

Steel burs

Answer

Fine white stone

Answer

Plastic finishing strip

Answer

Finishing diamonds

Answer

Mounted abrasive rubber discs

Question 7

An asymptomatic red patch with or without foacl hyperkeratosis found in the floor of the mouth, lateral tongue or retromolar area is significant because:

Accepted Answer

It is likely an erythroplakia

Answer

It is likely a pyogenic granuloma

Answer

It is likely an indication of psoriasis

Answer

It is likely an indication of Kaposi’s sarcoma

Question 8

Which gland do most acinic cell adenocarcinomas occur?

Accepted Answer

Parotid gland

Answer

Sublingual gland

Answer

Submandibular gland

Answer

Von Ebner glands

Answer

Minor salivary glands

Question 9

Premature loss of a primary maxillary canine would MOST DIRECTLY result in:

Accepted Answer

Upper midline shift towards the affected side

Answer

A Class II molar relationship bilaterally

Answer

A Class III molar relationship bilaterally

Answer

Posterior crowding

Question 10

Which dental specialty focuses on the diagnosis and surgical treatment of diseases, injuries, and defects of the oral and maxillofacial region?

Accepted Answer

Oral and Maxillofacial Surgery

Answer

Orthodontics

Answer

Endodontics

Answer

Periodontics

A patient presents with a white lesions on his buccal mucosa.The lesion is 4mm x 4mm in size and has been present in the patient's mouth for 4 months.Last week it became ulcerated and prompted the patient to see you.What would appropriate management entail?

A patient presents with a white lesions on his buccal mucosa.
The lesion is 4mm x 4mm in size and has been present in the patient's mouth for 4 months.
Last week it became ulcerated and prompted the patient to see you.
What would appropriate management entail?