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ePaper created 2018-03-13, 09:28:55 | version 1.38.0
case series | Fig. 1 Fig. 2 Fig. 1: The damaged appliance removed from the mouth. Fig. 2: The repaired appliance. Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 3: The Schwartz appliance with a broken Adam’s hook. Fig. 4: Laser welding process without filler metal. Fig. 5: The hook repaired without damaging the nearby acrylic part. Fig. 6: The appliance replaced into the mouth. Clinical cases Case 1 A 9-year-old female patient in orthodontic treatment in our office came in urgently owing to damage to the rapid palatal expander applied to her maxillary molars. The clinical examination revealed that the brace had been damaged close to the connection with the arm (Fig. 1). The patient had just finished one stage of the expansion, and since it was very risky to leave her without an appli- ance, we decided to weld it directly in the office with the Fidelis laser. The expander was prepared with the conventional pro- cedure required before laser welding (sandblasted with alumina powders of 50 μm in diameter using the Mini- blaster, Deldent; cleaned with acetone and both parts dried). The appliance was directly welded in the office using CoCr-Schweißdraht welding wire (DENTAURUM). After a few minutes only, the appliance was ready to be recemented into the patient’s mouth (Fig. 2). ortho 1 2018 07