A case of partial anodontia affecting numerous teeth in both the primary dentition and permanent dentition in which occlusal guidance was carried out for about ten years, is reported.
At the initial examination, a 3-year-1 month-old girl showed four congenitally missing teeth at _??_, conical tooth at __??_, retarded eruption at __??_.
According to the cephalometric analysis, the maxilla was underdeveloped. The maxillary dental arch was expanded using a removable appliance with a screw to correct cross bite as she grew. Difficulties in mastication and esthetic problems were treated using a space maintainer. There were also psychological effects.
At the present time satisfactory occlusion of the premanent dental arch has been obtained with the space maintainer. A long-term oral management with orthodontic, prosthetic treatments and dental implantation will be needed in the future.