DHB exam prep questions & answers 2024/2025
In periodontitis, which part of the alveolar bone is first affected when destruction occurs? - ANSWERSAlveolar crest. The alveolar crest is the most coronal (towards the crown) portion of the bone in between the teeth. In health, it is located 1 to 2...
In periodontitis, which part of the alveolar bone is first affected when destruction occurs? -
ANSWERSAlveolar crest. The alveolar crest is the most coronal (towards the crown) portion of the bone
in between the teeth. In health, it is located 1 to 2 mm apical to or below the CEJ. In disease, this part of
the bone is the first portion to become damaged in radiographic images, the clinician can detect
fuzziness on the crest, and reduction of the bone level.
The free gingival groove separates, - ANSWERSThe free gingiva from the attached gingiva.
Localized aggressive periodontitis in permanent dentin toon is characterized by destruction on: -
ANSWERSIncisors and first molars
Which assessment method can BEST evaluate
The presence of peri-implantitis? - ANSWERSRadiograph
Attached gingiva is found between the: - ANSWERSAlveolar mucosa and the free gingival groove.
Chronic periodontitis is mostly related to bacteria of the red complex: - ANSWERSP. Gingivalis, t.
Forsythia, and t. Denticola
A periodontal dressing is used for all the following purposes: - ANSWERS1. To preserve blood clot
2. To prevent debris accumulation
3. To increase patient comfort
Calculus removal is important in preventing and treating periodontal disease because, -
ANSWERSCalculus is a local factor that facilitates the accumulation of plaque.
, Which type of tooth brushing is adequate after a periodontal surgery? - ANSWERSCharter because
directs head to occlusal surface and away from gingiva.
Bass and Stillman methods - ANSWERSBoth direct head at 45 degree angle. Bass however, places bristles
into pocket.
Fones Method (brushing) - ANSWERSLarge circular motion in entire facial surface of the teeth. Indicated
for those who lack manual dexterity.
Dehiscence - ANSWERSLoss of alveolar bone on the facial aspect of tooth. Leaves characteristic oval
fenestration - ANSWERS"Window" of bone loss in the facial or lingual aspect of a tooth.
Microleakage between the tooth and restoration margins is caused by: - ANSWERSThe difference in
coefficients of thermal expansions
What is the definition of adhesion? - ANSWERSAttraction between unlike atoms and molecules.
A higher content of which metal will make the amalgam stronger and less corrosive? - ANSWERSCopper
According to the national Institute for occupational safety and health, what is the recommended
exposure limit (REL) of mercury? - ANSWERS0.05 mg/m3 up to 10 hour workday and 40 hour work week
Which of the following is a negative reproduction? - ANSWERSImpression
Which would be the best base material to use to achieve a sedative effect on the pulp? - ANSWERSZinc
oxide-eugenol because of its neutral pH
With time, restorations can lose their marginal integrity and allow fluids to move in and out of the gap.
This gap is called: - ANSWERSPercolation
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