Ali Bolouri

A PROCEDURE FOR RELINING A COMPLETE OR REMOVABLE PARTIAL DENTURE WITHOUT THE USE OF WAX

Various procedures are used to reline removable dentures. Some of these involve the use of wax to seal the denture to the cast for flasking and processing. This necessitates the use of high temperatures for an extended period and involves the risk of warpage of the denture. It is also relatively time-consuming. This article describes a procedure that uses polyvinyl siloxane instead of wax. The procedure is more time efficient and decreases the risk of warpage of the denture.

Proposed treatment sequence for overdentures

In conventional overdenture treatment planning, it is often assumed that all the teeth, except the selected abutments, are extracted and that endodontic treatment on the remaining teeth is necessary. The latter step may add substantially to the cost of the overdentures. Since several prosthodontic patients demonstrate the formation of a calcified bridge over an exposed vital pulp, the dentist can simulate this condition and eliminate the time and expense entailed by endodontic treatment. Since good oral hygiene and home care are necessary for optimal prognosis in overdenture therapy, there is time in this proposed sequence of treatment to discontinue treatment on patients with poor prognosis, before becoming involved in rather expensive endodontic and coping treatment. The proposed phenomenon is a gradual one, but it can retain tooth vitality through careful and early planning of the overdenture.

Removable partial denture design for a few remaining natural teeth

T h i s article presents a partial denture design utilizing the hinge-lock apparatus. The patient for whom this design was used is classified as a Kennedy Class II, mod. 1.1 The mandibular arch is bilaterally edentulous, and only four unilaterally posterior teeth are remaining (Fig. 1). The hinge-lock design was used to reduce torque and tooth movement and to provide maximum retention, support, and bracing. 2 In light of these goals it must be remembered that the axis of rotation, i.e., the line around which the denture tends to rotate (Fig. 1), is not bilateral; it is a unilateral line. This presents a problem in providing indirect retention. The ideal location for providing indirect retention is on the side opposite the free-end extension a as far from the axis of rotation as possible. As seen in Fig. 1, the location for indirect retention in this instance lies on the buccal portion of the natural teeth. With the hinge-lock design presented, it is possible to obtain the needed retention through the buccal arms of the hinge-lock apparatus (Fig. 2). The length and location of the buccai arms are important factors in determining the magnitude of stress on the abutment teeth.

The use of wax and self-curing acrylic resin in border molding

A procedure for border molding of impression trays with border wax and cold-curing acrylic resin has been described. The use of modeling compound, the water bath, and the alcohol torch has been eliminated.

Fabrication of accurate baseplates for restricted interarch space

R &rd bases or baseplates in complete denture fabrication are used to register the maxillomandibular relations and. carry the arranged artificial teeth to the patient’s mouth for the try-in.‘,’ Their precision, accuracy, and rigidity are of prime concern to the dentist. A lack of interarch space may lead to thin baseplates that may not be accurate for recording the jaw relations or the try-in (Fig. 1). In this article a procedure for the fabrication of accurate baseplates is described. The ridigity, yet space, that is needed for artificial teeth has been preserved to its maximum.

Modified flasking technique for removable partial dentures

Abstract This modified technique for flasking removable partial dentures minimizes processing stresses to the metal framework. No significant disadvantages are noted.

Refitting a bar-clip removable prosthesis attached to osseointegrated implants

Refitting clip-retained complete dentures for patients with osseointegrated implants as abutments presents problems in maintaining occlusion and protecting the clip during processing. This article describes a technique for functionally relining osseointegrated prostheses containing anterior clip-bar attachments.

The use of intraoral cores to repair complete and partial removable prostheses.

A technique has been described for repairing fractured dentures. The procedure entails use of an occlusal core to correctly position the broken pieces of the denture. This technique is also applicable for repair of removable partial dentures as well as complete dentures. When the cause of a fractured prosthesis can be traced to occlusal disharmony or poor fit, it is not expected that repairing the denture will solve the underlying cause.