Fiber maxillary and mandibular lingual splinting (Case)PREAT Corporation
Fiber Orthodontic Lingual Retainers
Maxillary and mandibular bonded retainers after orthodontic therapy
The patient was a 13-year-old female and presented with maxillary and mandibular crowding and increased overjet.
She had fixed orthodontic therapy that lasted 1 year and 5 months. After complete correction of the crowding and reduction of overjet, it was planned to place maxillary and mandibular bonded retainers made of Fiber 1.2mm to prevent any possible relapse of crowding.
Metal wire was placed on the maxillary model to determing the length of fiber needed. The fiber was measured and cut with scissors.
The lingual surfaces of the teeth were sandblasted with a microetcher, 3 seconds per each tooth. After sandblasting, the tooth surfaces were etched with 37% phosphoric acid for 30 seconds. Note that etching was performed on a wide enamel area, to optimize bond strength.
The lingual surfaces of the teeth were sandblasted with a microetcher 3 seconds per each tooth. After sandblasting, the tooth surfaces were etched with 37% phosphoric acid for 30 seconds. Etching was performed on a wide enamel area, to optimize bond strength.
After proper rinsing and drying, the enamel surface should have a white chalky appearance.
After etching, the bonding agent was applied with a brush and cured.
A thin layer of flowable composite was applied onto the lingual surfaces. The flowable composite should also cover the interproximal spaces and should not be cured at this time.
The fiber bundle was then placed onto the flowable composite and placed with a hand instrument, such as a Stepper or silicone matrix.
Light cure the fiber, one tooth at a time, for 5 seconds per tooth. Protect the adjacent tooth and the rest of the fiber bundle from premature curing with a wide instrument, like a Stepper. After the fiber has been placed and cured, the whole retainer was covered with a layer of flowable composite and light cured for 40 seconds per tooth. Note that the flowable composite must cover the entire length of the fibre bundle, including the interproximal areas.
After curing, the retainer was polished, and the occlusion was checked to ensure that the fiber bundle was not placed in occlusion. The same procedure was carried out in the lower arch for fabricating a bonded 3-3 mandibular retainer.
Final post treatment result.