A technique for improving the marginal fit of temporary acrylic resin crowns using injection of self-curing acrylic resin.
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A technique has been described which can augment concavities and irregularities in edentulous ridges where cosmetics are important. Using the combination of temporary acrylic resin restorations and connective tissue autografts, unattractive con-cavities and ridge irregularities can be corrected.
The aims of this study were to compare coronal microleakage around cast and prefabricated post and cores and to examine the coronal seal achieved by temporary post crowns. Thirty extracted, single-rooted, human teeth were prepared chemomechanically, root filled with gutta-percha and sealer and prepared for a standard post. Three groups, each of 10 teeth, were restored with either: (i) cast post and cores cemented with zinc phosphate cement; (ii) prefabricated posts and composite cores cemented with a composite luting cement; or (iii) temporary post crowns cemented with a temporary zinc oxide-eugenol cement. The teeth were thermocycled and placed in Indian ink for 1 week, then demineralized and rendered transparent. Linear coronal dye penetration around the posts was measured and recorded. Results indicated that while cast post and cores and prefabricated posts and composite cores produced a good seal, leakage was significantly greater with temporary post crowns (P < 0.05). It is concluded that to prevent re-infection of the root canal system, it may be preferable to restore the tooth immediately with a prefabricated post and composite system rather than place a temporary post crown and subsequently a cast post and core.
A case is reported of a nine-year-old white female with regional odontodysplasia involving the maxillary right quadrant and the construction of a temporary acrylic removable prosthesis, to provide function and to increase vertical dimension.
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The technique described offers the patient an esthetic temporary crown for a horizontally fractured vital anterior tooth without resorting to emergency root canal therapy or pins.
The knowledge of forces that influence implants and suprastructure is important for the restorative dentist to realize the surface areas and vertical dimension of fixed restorations. The purpose of the concepts of occlusion is to respect the protection of implants that receive stress transmission and being aware of destructive forces. In cases in which the edentulous maxilla and mandible are provided with large monoblock implant bridges, the author recommends a bilateral balanced group guidance. If biomechanical principles are not respected, implant loss and restoration failure will result. For the first adjustment of occlusion and articulation patterns immediately after implantation, fixed temporaries are placed on the implants. Another 40 to 60 days later, the temporaries are exchanged for definitive implant bridgework.
The utilization of properly fabricated provisional prosthodontic appliances will permit a higher rate of success of the definitive treatment. This phase of restorative treatment should not be merely considered a temporary treatment but as a template for the ensuing prosthesis. The information that is obtained in this phase of treatment will reduce the problems that may be encountered in the definitive treatment. This article has discussed the function and requirements of both provisional, fixed restorations and transitional removable partial dentures. The methods of fabrication and the materials employed have been enumerated.
An in vitro study was conducted to quantitatively compare the marginal adaptation of temporary crowns made from Protemp material with those made from Scutan, Provisional, and Trim materials. A direct technique was used to make temporary restorations on prepared teeth with an impression as a matrix. Protem, Trim, and Provisional materials produced temporary crowns of comparable accuracy. Crowns made from Scutan material had open margins.
The use of provisional implants as the sole or adjunct mean of stabilization for interim fixed partial dentures has gained popularity in implant prosthodontic treatment. These implants can be used between submerged implants during the healing phase to provide support for interim fixed or removable partial dentures. In this clinical report, a provisional implant used to provide support for a full-arch fixed interim restoration is described. Positioned between adjacent conventional implants, the provisional implant was placed during the same surgical procedure. As a result, an immediate acrylic fixed partial denture supported by natural teeth and the provisional implant provided a comfortable and esthetic interim restoration during the osseointegration period.
This report is on the care of a temporary denture with gaps in the front area of the upper jaw with fixed and removable artificial dentures (children's prosthesis), covering aspects of gnathoorthopaedic necessity (support zone, tongue habit), aesthetic and speech functions.
It shows how to plan pre and post surgical rehabilitation in a Angle Class III orthognathic surgery patient and the use of temporary pre-surgical restorations to establish and fix the mandible in its new position in habitual occlusion and vertical dimension from the same day of surgery.
In this in-vitro study, the flexural strength and Young's-modulus of five resin-based provisional materials were compared after repair. A three-point bending test and a fracture test of 3-unit fixed partial dentures (FPDs) were performed. Temphase (53.1 +/- 7.9 MPa), Luxatemp (45.2 +/- 7.8 MPa) and Trim (17.8 +/- 2.5 MPa) showed significantly lower initial flexural strength compared to Provipont (54.3 +/- 10.5 MPa) and Protemp 3 Garant (58.9 +- 5.9 MPa). A significant decrease of flexural strength was found after the repair of Luxatemp and Temphase with provisional material on the oxygen-inhibited surface, and additionally, for Temphase with composite on mill-cut surface. The fracture strength of the FPDs varied between 655N for Trim and 1258N for Protemp3. After the repair, the results did not change significantly. The effectiveness of the repair using temporary materials was highly dependent on the type of material and the repair material. However, the repair of the FPDs with provisional resin may lead to minor changes in the fracture resistance. The high flexural strength and fracture resistance would favor Protemp3 and Provipont for long term clinical application.
Provisional restorations for crowns and fixed prostheses are often poorly made, contributing to inadequately fitting restrations, sensitive teeth and occlusally incorrect crowns and prostheses. Properly made resin temporary restorations are easy and inexpensive to make by qualified auxiliary staff, and they provide assurance that the final restorations will fit well with minimal clinical adjustments.
All-plastic bridges are mainly indicated as temporary bridges. As a definitive measure they are indicated only in case of sagittal shoulder, slight overbite and secure support in the posterior region for the replacement of a missing incisor.
A technique has been presented for the efficient fabrication of a temporary or provisional restoration with emphasis on esthetics, proper contour, and marginal integrity. Attention to details in these procedures can be most rewarding to both the patient and the dentist.
The methods of prevention of complications of metalloceramic prostheses are described. A compound is designed for temporary fixation of nonremovable dentures which allowed the 2-months follow-up of the patients and did not prevent corrections at any stage of treatment. Outpatient follow-up is necessary in the cases of metalloceramic prosthesis application.