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Dentistry · Oral histology and anatomy: transseptal fibres
Sample itemWhich gingival fibre group passes from the cementum of one tooth over the interdental septum, above the bone crest, to the cementum of the adjacent tooth?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Transseptal fibres
Transseptal fibres run between adjacent teeth above the alveolar crest and help keep neighbouring teeth in contact. They are among the fibres implicated in relapse after orthodontic rotation of teeth.
Option by option
A. Alveologingival fibres
Alveologingival fibres run from the bone crest into the gingiva.
B. Circular fibres
Circular fibres encircle the tooth in the free gingiva.
C. Transseptal fibres (correct)
Correct. Transseptal fibres link neighbouring teeth over the crest.
D. Dentogingival fibres
Dentogingival fibres run from cementum into the free and attached gingiva.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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