Takaichi Atsushi, Wakabayashi Noriyuki, Igarashi Yoshimasa
Removable Partial Prosthodontics, Tokyo Medical and Dental University, Japan.
Contemp Clin Dent. 2011 Oct;2(4):402-4. doi: 10.4103/0976-237X.91814.
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.
我们的目的是报告一种预制光固化塑料模型在不使用耐火铸型的情况下用于可摘局部义齿支架构建的应用。在下颌Kennedy I类部分牙列缺失患者的主模型上适配舌杆的塑料模型。该模型在光腔中进行聚合。采用钴铬丝以尽量减少塑料支架的潜在变形。将支架小心地从主模型上取下，用磷酸盐粘结包埋料包埋以进行后续铸造程序。使用19号锻造丝制作固位卡环，并通过激光焊接机将其焊接到支架上。在试戴和义齿就位时观察到支架在患者口腔中贴合良好。结果表明，这种方法可将局部义齿制作的实验室成本和时间降至最低。
