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Dental Anatomy & Physiology Flashcards

6 cards from real MJDF practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Dental Anatomy & Physiology flashcards as text

  1. What is the function of the stellate reticulum in the developing tooth?

    Answer: Provides mechanical cushioning and space for enamel organ growth

    The stellate reticulum is a star-shaped cell layer within the enamel organ that provides mechanical support and maintains the space needed for the enamel organ to grow and differentiate.

  2. What is the major blood supply to the mandibular teeth?

    Answer: Inferior alveolar artery (branch of maxillary artery)

    The inferior alveolar artery, a branch of the maxillary artery, enters the mandibular foramen and supplies all mandibular teeth via the inferior alveolar canal.

  3. What structural feature of cementum allows the PDL fibres to attach to the root?

    Answer: Sharpey's fibres embedded in cementum during deposition

    Sharpey's fibres are collagen fibres from the PDL that become embedded (calcified) within cementum during deposition, anchoring the tooth firmly to the surrounding bone.

  4. How many roots does the maxillary first premolar typically have?

    Answer: Two (buccal and palatal)

    The maxillary first premolar most commonly has two roots (buccal and palatal); this bifurcation typically occurs in the middle or apical third, which has implications for extractions and endodontics.

  5. What is acellular extrinsic fibre cementum (AEFC) and where is it found?

    Answer: Primary cementum on the coronal two-thirds of the root containing embedded Sharpey's fibres

    AEFC is the primary cementum that covers the coronal root surface; it is acellular, extrinsic-fibre (Sharpey's fibres predominate), and provides the main attachment for the PDL in the coronal root area.

  6. What is the clinical relevance of the maxillary sinus in relation to upper molar roots?

    Answer: Upper molar roots (particularly palatal root of upper first molar) may project into or be adjacent to the sinus floor

    The roots of upper molars, particularly the palatal root of the upper first molar, can project into or be closely related to the maxillary sinus, creating risk of oro-antral communication during extraction.