A 30 year old woman came in with the complaint of gum recession and sensitivity on lower front teeth.

She remembers noticing slight recession 3 years ago. She feels it has worsened over the last 12 months. There has recently been some sensitivity to hot and cold and gingival soreness, most noticeably on tooth brushing and eating ice cream.

How is gingival recession measured?

• From CEJ to free marginal gingiva

• From gingival margin to junctional epithelium

• From gingival margin to depth of sulcus

• From CEJ to mucogingival junction

How would you measure the total width of attached gingiva?

• A: From CEJ to mucogingival junction

• B: From free gingival margin to mucogingival junction minus pocket depth

• A + B

Answer explanation

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Which of the following treatment gives the most aesthetic and predictable outcome for gingival recession?

• Connective tissue graft

• Free gingival graft

• Lateral pedicle flap

• Double papilla flap

A patient, when in full intercuspation, shows a right side posterior crossbite and a lower midline that is deviated to the right. At initial contact, there are bilateral posterior crossbites and coincident midlines.

The most likely cause of this finding is

• Temporomandibular dysfunction

• Two ideal occlusions

• True unilateral crossbite

• Occlusal interference and functional shift

The greater palatine foramen is usually located at

Answer explanation

The greater palatine foramen transmits the descending palatine vessels and the greater palatine nerve. The most common location of the greater palatine foramen is medial to or opposite the upper third molar.

A fracture in the porcelain of a porcelain fused to metal crown may be caused by

• Sharp line angles in the tooth preparation

• Lack of parallelism of axial walls

• Excessive metal thickness

• Sharp line angles in the metal under the porcelain

Answer explanation

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A partial denture which fits the master cast may fail to sit correctly in the mouth due to

• Contraction of the metal framework during casting

• Failure to block out undercuts

• Distortion of impression

The above diagram shows 4 dentoalveolar fracture scenarios in permanent teeth.

Which one of the splinting protocols is correct?

• A

  All the 4 scenarios need 4 weeks splinting

• B

  Scenario 2, 3 may need one month splinting

• C

  Scenario 1 may need 4 months splinting.

• D

  The tooth should be extracted in scenario 1.

• E

  B & C are correct

Answer explanation

The International Association of Dental Traumatology (IADT) 2020 guidelines recommended that

splinting of a root fracture should be performed with a passive flexible splint. One month splinting is recommended for alveolar bone fracture (a more rigid splint may be needed if injury is extensive), apical and middle thirds root fractures, and up to 4 months for cervical root fractures.

Intermittent painful swelling in the submandibular region that increases at meal time is indicative of

• Blockage of Wharton's duct

• Blockage of Stensen's duct

• Ranula

Following implant surgery in the lower left second premolar position, the patient reported unpleasant and painful spontaneous sensations in the area circled.

The patient`s symptom is best described as

• Anaesthesia

• Hyperalgesia

• Neurapraxia

• Dysaesthesia

Answer explanation

Dysaesthesia:

An abnormal sensation, either spontaneous or evoked, that is unpleasant.

All dysesthesias are a type of paraesthesia but not all paraesthesias are dysesthesia