小口症患者の補綴処置例

抄録

This paper describes the treatment of a partially edentulous patient with microstomia. A 65-year-old patient's face was severely burned when he was 2 years old. His mouth circumference was about 120 mm and perioral burn scar contraction strictly limited access to the oral cavity. Upper and lower preliminary impressions were obtained by using a sectioned stock tray for an edentulous patient. A sectional custom tray was made for a maxillary final impression. A larger section encompassed an area of the denture base and retainers. A small section encompassed a remaining dental arch. This technique minimized the influence of errors resulting from sectional impression. Two halves could be assembled and disassembled in the mouth and reassembled outside the mouth by LEGO plastic building blocks.
An outline of the deture base was simplified by partial overdeture, which an isolated and mobile tooth was served as an abutment. An arm tip of the farthest clasp from the denture base travelled mesially so as not to injure the angle of the mouth. Upper and lower partial dentures could be carefully inserted and twisted into place. Upon reexamination 1 year later, the dentures were in good condition.