clinical course of a 12-year-old child with ectodermal dysplasia who was treated with an implant-supported overdenture for the mandible and an overdenture for the maxilla. Case report Two dental implants were placed in the canine regions of the mandible. The maxillary teeth were prepared for the milled copings. Because the preparation of parallel walls was difficult, near-parallelism with an angle of convergence or taper of approximately 5 degrees was achieved. The cervical third of the teeth was prepared to be as parallel as possible to one another. In addition, the occlusal surfaces were reduced 1.5 mm, and the axial surfaces were reduced 1 mm. Occlusal reduction was performed to provide adequate thickness for the overlying denture base material. A chamfer finish line was prepared. The copings were cast with a Cr-Ni-based metal alloy and luted, bilateral balanced occlusion was developed using anatomic acrylic teeth. An impression was taken with an individual tray for impressions of overdentures. In response to the patient’s dry mucosa, the impressions were taken using rapid-setting silicone impression material with high elasticity. Bilateral balanced occlusion was achieved using anatomic acrylic teeth for overdentures. The maxillary overdenture and implant-supported mandibular overdenture were prepared by conventional methods using thermal-curing acrylic resin. The patient was seen 48 hours later for adjustment, then after 1 and 2 weeks, 1, 3, and 6 months, and 1 year and he is still satisfied with his prosthesis both aesthetically and functionally. The use of endosseous implants in the prosthetic rehabilitation of children with ectodermal dysplasia may provide a considerable improvement in comparison with traditional prosthetic methods.
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