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Orthodontics and Pediatric Dentistry Flashcards

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

Read the first 6 Orthodontics and Pediatric Dentistry flashcards as text

  1. The leeway space (E-space) refers to the size difference between which groups of teeth?

    Answer: Combined width of primary canine and molars minus combined width of permanent canine and premolars

    Leeway space is the difference between the combined mesiodistal width of the primary C, D, E (canine and two molars) and their permanent successors (C, PM1, PM2) — approximately 1.5 mm per side in the mandible.

  2. The normal overjet (horizontal overlap) in a Class I occlusion is approximately:

    Answer: 2–4 mm

    Normal overjet in a Class I occlusion ranges from 2–4 mm, representing the horizontal distance between the facial surface of the lower incisors and the lingual surface of the upper incisors.

  3. Fluoride varnish application in pediatric patients is recommended beginning at:

    Answer: Eruption of the first primary tooth (approximately 6 months)

    The American Academy of Pediatric Dentistry (AAPD) recommends fluoride varnish application beginning at the eruption of the first primary tooth, approximately 6 months of age.

  4. A child presents with a completely avulsed permanent incisor. The best immediate storage medium before replantation is:

    Answer: Hank's Balanced Salt Solution (HBSS) or milk

    HBSS (save-a-tooth solution) is the gold standard storage medium; milk is the best readily available alternative due to appropriate osmolarity and nutrients that maintain PDL cell viability.

  5. The primary treatment for early childhood caries (nursing bottle caries) is:

    Answer: Elimination of the cariogenic feeding habit, diet counseling, and restorative treatment of affected teeth

    ECC treatment requires stopping the cariogenic behavior (nocturnal bottle feeding with fermentable carbohydrates), parent education, diet modification, and prompt restorative/preventive dental care.

  6. In orthodontic treatment, a headgear appliance with a cervical-pull (low-pull) force direction applies force that:

    Answer: Distalizes and extrudes the maxillary molars, restraining forward maxillary growth

    A low-pull cervical headgear applies a downward and backward force on the maxillary molars, extruding and distalizing them while restraining forward maxillary skeletal growth.