The present invention relates generally to a toy doll head of the type having a mouth opening and at least one simulated tooth adapted to alternatively extend into the mouth opening in an exposed position and then be retracted into the doll head in a retracted position. The head includes internal mechanical growth means for causing the tooth to alternately be extended into and be retracted from the mouth, the internal growth means being adapted to releasably secure the tooth in either position as well as between positions. The internal growth means comprises an elongated shaft including at least one simulated tooth at one end and control means at the opposite end. The shaft is maintained in proper alignment by at least one brace internally mounted on the inside of the doll head.