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PubMed1990

[Comparative study on the biological properties of plastics for temporary crowns and bridges].

Six different plastic materials for temporary crowns and bridges were tested comparatively concerning their biological properties. To this the temperature in the pulp cavity was measured in vitro while making temporary crowns. Also the cytotoxicity was determined by the hemolysis-test. The results obtained showed that there is no thermal irritation of the pulp if the temporary plastic material is applied in an alginate impression as usual in practice. Cytotoxicity of the hardened plastics was not provable. Nevertheless tissue irritation can not be justified when using polymethacrylates and epimine-resin.

Alginates↗
PubMed1991

Aesthetics of the single anterior temporary crown.

Conventional temporary crown materials offer a limited color range that makes it difficult to meet the requirements of patients with high aesthetic expectations. This article details two methods for achieving optimum aesthetic results during the period when the permanent crown is being fabricated.

Color↗
PubMed1991

Immediate aesthetic provisionalization for the dental implant patient.

Providing an acceptable provisional restoration for the patient undergoing tooth extraction in conjunction with bone grafting and dental implant treatment can present a challenge for the restorative dentist. The unnatural appearance and function of the typical temporary is often unacceptable to the patient whose treatment requires long-term temporization. This article describes a technique for using heat-cured acrylics to provide immediate aesthetics in a provisional bridge for such patients.

Acrylic Resins↗
PubMed2006

Using a fixed provisional prosthesis during post-extraction healing and implant placement.

Most dental patients insist on the use of provisional prostheses throughout healing and osseointegration when replacing extracted teeth with implants in esthetically sensitive areas. Removable appliances of some kind are normally used for this purpose, but patients often consider them to be too cumbersome. This can lead to decreased case acceptance and compliance with the use of the provisional restoration, which can compromise the final result of treatment. Custom fixed solutions to this problem exist, but they tend to be more complicated, less practical, and more expensive than other options now available. The Monodont bridge, a new system of prefabricated components for the creation of provisional fixed partial dentures, can be more esthetic, more retentive, more functional, more cost-effective, and more universally applicable than any other available techniques. This can raise patient tolerance of provisional prostheses and thus increase case acceptance, while fostering a more predictable esthetic result with regard to soft tissue contours and emergence profile.

Adult↗
PubMed1999

Retention of provisional crowns fabricated from two materials with the use of four temporary cements.

STATEMENT OF PROBLEM: Practitioners often choose resin materials and temporary cements with little understanding about their effect on provisional crown retention. PURPOSE: This study evaluated the retention of provisional restorations made with 2 materials and cemented with 4 temporary cements. METHODS AND MATERIAL: Recently extracted molars were prepared with a flat occlusal surface, 4-mm axial length and 20-degree angle of convergence. Specimens were distributed into equivalent groups. Provisional crowns were constructed for each preparation with polymethyl methacrylate (Temporary Bridge Resin) or bis-acrylic composite (Protemp Garant) and later cemented with Temp-Bond, Temp-Bond NE, Temrex, and an experimental calcium hydroxide temporary cement. A second group with Temrex was evaluated using half the recommended liquid. A cementing force of 2.5 kg for 5 minutes was used. After initial bench set followed by 24 hours in room temperature water, the crowns were removed with an Instron mechanical testing machine at 0.5 mm/min. A 2-factor ANOVA was used with alpha=.05 (n = 10). Mode of debonding was analyzed with a nonparametric chi-square test of association. RESULTS: Mean dislodgment stresses ranged from 670 to 1072 kPa for polymethyl methacrylate crowns and 554 to 884 kPa for those made of composite. Differences were nearly significant for the type of provisional material (P =.061) and the cross-product interaction (P =.376) was not significant, whereas there were significant differences among the cements (P =.002) and the mode of debonding (P =.0034). CONCLUSIONS: Excluding Temp-Bond to eliminate a cross-product interaction demonstrated that the polymethyl methacrylate crowns were 19.3% more retentive than the composite crowns (P =.015). There was no statistically significant difference among the 4 temporary cements when the manufacturer's mixing instructions were followed (P =.186). However, the thicker consistency Temrex was more retentive than the recommended Temrex mix and Temp-Bond.

Analysis of Variance↗
PubMed1993

Treatment of the adolescent trauma patient with endosseous implants: a case study.

Adolescent patients who lose permanent dentition through trauma require treatment that considers factors not involved in the treatment of adults. Endosseous implants and a temporary prosthesis were utilized in this case to provide optimum aesthetics in a manner that addressed the evolving dentition, growing skeletal bases, and social and psychologic needs. The learning objective of this case study is the treatment of adolescent trauma and a detailed surgical procedure.

Adolescent↗
PubMed2006

Provisional anterior tooth replacement using nonimpregnated fiber and fiber-reinforced composite resin materials: a clinical report.

The loss of anterior teeth is often a serious esthetic concern. While conventional fixed partial dentures and implant-supported restorations may be the treatments of choice, nonimpregnated fibers (NFs) and fiber-reinforced composite (FRC) resins offer a conservative alternative for improving esthetics. This article describes 2 clinical situations in which NF glass ribbon and FRC were successfully used to provisionally restore anterior edentulous areas in an esthetic, functional, and timely manner.

Acrylic Resins↗
PubMed1978

Fabrication of a single posterior intermediate restoration.

Intermediate or temporary crowns are important in cast restoration procedures. A techniques is suggested whereby a metal shell crown is relined with autopolymerizing acrylic resin. It produces a restoration that (1) has good adaptation, (2) maintains gingival tissue health, (3) provides proximal and occlusal contacts, and (4) maintains tooth position.

Acrylic Resins↗
PubMed1980

Pulpal response to a temporary crown and bridge material in ferret teeth.

The histological effects of a temporary crown and bridge material (Scutan) on the pulp of canine teeth of ferrets was investigated at time intervals up to 6 months. After 24 h a moderate to severe pulpal response was observed which persisted up to 6 months. A case of contact sensitivity to Scutan is reported.

Animals↗
PubMed1997

Orthodontic extrusion--a new simplified aesthetic technique.

Various techniques have been described to extrude the roots of fractured teeth to facilitate prosthetic restoration. Many of these have the disadvantage of poor aesthetics, they require skill in fabrication and fitting, and there is often inadequate control over the amount of extrusion. With the technique described, root canal therapy is completed initially and a cast gold post is cemented into the root canal. The post has a channel extending from the labial to the palatal aspect. A temporary acrylic crown is fitted to restore aesthetics, and the channel is extended though the palatal and labial surfaces. An orthodontic wire framework with a horizontal strut at the level of the original incisal edge of the fractured tooth is then bonded to the adjacent abutment teeth. The amount of extrusion required is estimated and a corresponding reduction is made in the length of the acrylic temporary crown. An elastic threaded through the channel and looped over the horizontal strut of the framework provides the extrusive force. A 6 week retention period is required following the extrusion. Periodontal surgery is then carried out if necessary, and a new provisional crown is placed. The final porcelain restoration is fitted after 6 months.

Adolescent↗
PubMed1990

[Complete bridge on osseointegrated fixtures avoiding a temporary complete denture].

The possibility of placing fixtures between periodontically compromised teeth enables the immediate conversion from a fixed prosthesis supported by natural abutments to a temporary one supported by osseo-integrated fixtures. During the second surgical stage, the bridge on natural teeth is removed, the abutments are placed on the osseo-integrated fixtures and a new temporary bridge is prepared out of acrylic resin and gold cylinders screwed on the titanium abutments after the extraction of the residual teeth. The temporary bridge is realised for one side of the arc and then the other in order to control at all time the occlusion as well as the cosmetic aspect of the bridge. This approach avoids the passage by a mobile denture, shortens the healing period from 18 to 6 months and enables the prosthodentist to foresee the potential problems with the permanent fixed prosthesis.

Dental Implantation, Endosseous↗
PubMed1977

A temporary space maintainer using acrylic resin teeth and a composite resin.

A one-session technique for preparing a temporary space maintainer has been described. The technique consists of attaching an acrylic resin pontic to etched surfaces of natural adjacent teeth by means of a composite resin. The main advantages of this technique are elimination of premature tooth preparation, good esthetics, fair strength, low cost, and rapid completion of the restoration without the need of a dental laboratory.

Acid Etching, Dental↗
PubMed2006

Esthetic potential of single-implant provisional restorations: selection criteria of available alternatives.

UNLABELLED: Provisional implant restorations are essential tools used to optimize the esthetic outcomes for single-tooth implant restorations. This article describes three groups of available alternatives and the specific options within each group including removable prostheses (interim removable partial denture, vacuum-formed appliance), tooth-supported prostheses (bonded extracted or denture teeth, cast metal or fiber-reinforced resin-bonded fixed partial denture [FPD], wire-retained resin-bonded FPD, acrylic resin provisional FPD), and implant-supported fixed prostheses (implant-retained provisional restoration). Advantages and disadvantages as well as fabrication guidelines for each option are provided. The author proposes that the restorative dentist consider eight criteria in selecting the most appropriate type of provisional prosthesis for a specific patient situation including the esthetic potential, patient comfort, treatment time, laboratory cost, occlusal clearance, ease of removal, durability, and ease of modification. The patient's esthetic expectations are critical in determining the most suitable type of provisional restoration. Esthetically pleasing provisional restorations are part of the evolving implant continuum, making implant dentistry more appealing to practicing dentists and potential patients. CLINICAL SIGNIFICANCE: Provisional restorations for single implants have evolved from temporary expedients during osseous and soft tissue integration to critical therapeutic tools used to assess patient expectations, communicate with the laboratory, and optimize definitive implant treatment. The selection of the type of provisional restoration may significantly influence esthetics during the period of implant integration and soft tissue healing. However, it is unlikely that there is a direct correlation between the type of provisional restoration used and the esthetic outcome of the definitive prosthesis.

Acrylic Resins↗
PubMed1979

Technique for an immediate temporary fixed tooth replacement.

A clinical technique for the immediate replacement of an extracted anterior tooth was presented. The clinical crown of the patient's extracted tooth was used as a pontic by attaching it to the adjacent teeth with acid-etch bonded resin. This technique provides a practical and esthetic immediate fixed tooth replacement that requires minimum materials and time.

Acid Etching, Dental↗
PubMedDate not supplied

An alternative restorative method for regional odontodysplasia: case report.

A 5-year-old Caucasian male presented with early loss of multiple deciduous teeth. All the characteristics were consistent with the diagnosis of regional odontodysplasia (ROD). Significant initial findings included premature loss of multiple primary mandibular teeth and some malformed permanent teeth. The affected teeth showed hypoplastic enamel and dentin, short roots, and wide pulp chambers, and were localized in the mandibular dentition. Treatment objectives for this patient were to provide improved esthetics, restored chewing function, and space maintenance by the construction of a temporary prosthetic restoration. However, with limited tooth support and an unusual occlusal pattern, it is difficult to obtain satisfactory retention and esthetics with traditional prosthetic techniques. In this article we introduce an alternative method for fabricating a custom removable denture and discuss the prognosis of the malformed permanent dentition and further treatment plan.

Child, Preschool↗
PubMed1990

[Removable provisional dentures with wire clasps].

The matter examined regards the possible prosthetic therapies in temporary emergency situations following paradontopathic tooth extractions, of which comparisons are made between the positive and negative aspects of realizable therapeutic processes. Considering the advantages of the type of prosthetic therapy chosen, the Author describes the entire therapeutic process, both clinical and technical, emphasizing its methodology and the equipment and materials required, which make it possible for the doctor himself to put it immediately into practice in his office.

Denture Design↗
PubMed1994

Front tooth replacement with Tübingen (Frialit) implants.

127 Tübingen (Frialit) implants have been clinically evaluated for a 10 year period. The implants were placed in the anterior region of the maxillae of 101 patients to replace lost incisors, cuspids and premolars. Seventy-seven implants were placed within 3 months after loss of a natural anterior tooth, resulting in the preservation of the volume of the alveolar ridge and the contour of the surrounding soft tissues. This preservation of the volume of the alveolar ridge was due to the fact that the Tübingen implants have conical shapes and sizes, equal to those of the roots of natural teeth. The dentine-like colour and the biological properties of the bio-inert Al2O3 implant-material, in most of the cases was an advantage to the aesthetics of the prosthetic restorations and to the condition of the soft tissues in the permucosal area. The Tübingen implant is placed with a one-phase technique implying special care for the temporary restorations to avoid premature loading. Also prevention of overloading the ceramic material by the fixed restoration needs special attention in the construction of posts, cores and crowns. The overall survival-rate in this study with a mean follow-up of 4.5 years was 87%. Patient and dentist satisfaction was high.

Adolescent↗