title: Prefabricated light-polymerizing plastic pattern for partial denture framework.
abstract: Our aim is to report an application of a prefabricated light-polymerizing plastic pattern to construction of removable partial denture framework without the use of a refractory cast. A plastic pattern for the lingual bar was adapted on the master cast of a mandibular Kennedy class I partially edentulous patient. The pattern was polymerized in a light chamber. Cobalt-chromium wires were employed to minimize the potential distortion of the plastic framework. The framework was carefully removed from the master cast and invested with phosphate-bonded investment for the subsequent casting procedures. A retentive clasp was constructed using 19-gauge wrought wire and was welded to the framework by means of laser welding machine. An excellent fit of the framework in the patient's mouth was observed in the try-in and the insertion of the denture. The result suggests that this method minimizes laboratory cost and time for partial denture construction.
authors.affiliation: Removable Partial Prosthodontics, Tokyo Medical and Dental University, Japan.
authors.forename: Atsushi
authors.initials: A
authors.lastname: Takaichi
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Wakabayashi
authors.forename: Yoshimasa
authors.initials: Y
authors.lastname: Igarashi