INDICATION:
STEP 1:
The spur appliance recommended to be constructed from 0.045-inch stainless steel wire (similar to a mandibular lingual arch) to which eight short, sharpened 0.026-inch spurs, 3 mm in length, are soldered to the anterior part.
STEP 2:
The spurs are positioned 3 mm away from the cingulae of the incisors and are directed at an angle (downward and backward) to encourage correct tongue posture, with the tip of the tongue behind the central incisors