Question 235 · LDEK · Crossbite and scissor bite
An orthodontic appliance to correct partial anterior crossbite caused by palatal inclination of an upper incisor without dental crowding and with a 2 mm vertical overbite is:
- A. low-pull cervical headgear.
- B. chin cup.
- C. vestibular plate.
- D. lower Schwarz expander with an active labial bow.
- E. upper Schwarz expander with an active spring on the palatal surface of the incisor in the crossbite.
Hint
A single palatally tipped upper incisor with enough space and some overbite only needs to be tipped labially.
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