The Trikki lingual appliance

Lower anterior crowding is a frequent finding in early mixed dentition. Left untreated, it may lead to extractions of permanent teeth or even to impactions. The Trikki lingual appliance is a fixed device that aids in lower arch expansion and space gaining, especially in the lower anterior region, without the need for brackets. Patients with a deep-bite tendency, retroclined lower incisors, and/or lower anterior crowding are good candidates. The Trikki appliance may be used to shift the lower midline in cases of premature unilateral loss of a primary canine or to gain space and align ectopically erupted lower incisors. It requires no patient compliance, is effective, is easy for the clinician to adjust, and can be incorporated into any early treatment protocol.