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PubMed2005

Influence of provisional cements on ultimate bond strength of indirect composite restorations to dentin.

PURPOSE: The aim of this study was to evaluate the effect of provisional cements on the adhesion of resin bonded indirect restorations and determine the best method for avoiding adverse effects. MATERIALS AND METHODS: Forty-five bovine incisors were selected, and the enamel removed with a 600-grit SiC abrasive disk to expose superficial dentin. Provisional restorations of acrylic resin were cemented with three different provisional cements: calcium hydroxide cement, Dycal (HC); cement containing zinc oxide-eugenol, Provy (ZOE); zinc oxide eugenol-free cement, TempBond NE (ZNE). The specimens were stored at 100% humidity, 37 degrees C. Then provisional restorations were removed with: (1) hand scaler for 10 s; (2) pumice-water slurry for 10 s; (3) aluminum oxide sandblasting for 10 s. The indirect restorations were subsequently cemented with Single Bond and Rely-X ARC. The teeth were sectioned, 4 slices per tooth (n = 16), and each slice trimmed with a diamond bur to obtain an adhesion area of 1 mm2. The microtensile bond strength test was performed with a universal testing machine (Instron-4411) at a crosshead speed of 0.5 mm/min. The results were analyzed with ANOVA, followed by Tukey's test (p < 0.05). RESULTS: ANOVA showed significant differences in the interaction between provisional cement and dentin cleaning method; in general, aluminum oxide sandblasting provided the highest values of bond strength and calcium hydroxide the lowest. CONCLUSION: The type of provisional cement and its method of removal can affect the adhesion of resin-bonded indirect restorations.

Acrylic Resins↗
PubMed2005

Implant placement and provisionalization in extraction, edentulous, and sinus grafted sites: a clinical report on 1,500 sites.

The incorporation of restorative procedures at implant placement and the creation of natural emergence profiles and lifelike ceramic restorations have become the focus of implantology. Recent publications have provided guidelines for success with the immediate restoration procedure, and have presented basic surgical protocols for the implant team. Enhancement of the healing phase through the local delivery of growth factors to the surgical site, as well as through advancements in bone grafting materials, has allowed implant surgeons to accomplish multiple surgical procedures during the initial surgical visit. In addition, advancements in surgical stent designs have allowed the restorative dentist to adequately communicate to the surgeon, during surgery, the parameters required in the final restoration to replace the natural tooth system with form, function, and esthetics. This article presents the results of more than 1,500 immediate restored implants placed in edentulous sites, fresh extraction sockets, and sinus grafted sites. Also highlighted are guidelines for surgical success, as well as a description of a surgical stent design that communicates requirements for restorative success to the surgeon, while also serving as an esthetic provisional restoration.

Adult↗
PubMed2005

Retentive force of O-ring attachment to use Immediate Provisional Implant (IPI)-retained overdenture.

This study evaluated the retentive force of the O-ring attachment to an Immediate Provisional Implant (IPI)-retained overdenture. Two sizes of O-rings (#1, #2) were placed on the IPI abutment head. As the controls, soft relining material, silicone lining material, and the PMMA resin were used to connect the IPI abutment head. The retentive forces (n=5, N) obtained at a crosshead speed of 40 mm/min were analyzed by ANOVA/Tukey's HSD test (alpha=0.05). O-ring #1 showed the significantly greatest force among all materials tested (p0.05). Appropriate retention was obtained using the smaller O-ring#1 for the IPI-retained overdenture.

Analysis of Variance↗
PubMed2006

The periodontal prosthesis mode of transition to an implant-supported dentition.

In recent years, implant-supported reconstructions have become a welcome alternative to dentures for those who have lost their natural dentition. While the benefits of the final implant-supported reconstruction may be obvious, the planning and execution of therapy to achieve this result may be bewildering to many dentists. Four main modes of transfer have evolved: an uncontrolled or "haphazard" transition; the traditional "dentures first" mode, an immediate transition, and a staged transition. This article proposes an additional mode of transition called periodontal prosthesis, which has the potential to make the transition process smoother and more predictable while providing optimal retention of alveolar supporting structures and generating optimal esthetics.

Dental Implantation, Endosseous↗
PubMed2005

Achieving aesthetic success with an immediate-function implant and customized abutment and coping.

UNLABELLED: The absence of teeth in the anterior region often results in a number of negative consequences compromising appearance and facial anatomy, as well as patients' self-esteem and social behavior. Dental implants have increasingly become a viable option for achieving natural-looking restorations. The success of anterior restorations, however, depends upon several factors. The following case presentation discusses these factors as well as the implementation of clinical and laboratory procedures for the restoration of a missing anterior tooth. LEARNING OBJECTIVES: This article demonstrates an implant surgical procedure and restorative sequence used to replace a fractured single anterior tooth. Upon reading this article, the reader should: Understand how dental implants can be a viable solution based upon factors within the proximity of the region being restored. Realize that optimal aesthetics can be achieved when the final abutment is installed at the time of implant placement.

Adolescent↗
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↗
PubMed2006

Retrieval of amalgam from the root canal space.

Removal of foreign objects from the root canal can be very frustrating. The use of a variety of instruments and techniques has been suggested for the retrieval of obstacles from root canals during endodontic treatment. This article describes a method for retrieving a large mass of amalgam restoration that was wedged into the root canal. The amalgam, which had served as the provisional restorative material during apexification of an immature ante rior tooth, was inadvertently pushed into the root canal. After the mass was bypassed, the amalgam was loosened with the aid of copious irrigation, chelation, and flotation. Hedstrom files twisted around the object allowed sufficient grip for its retrieval, enabling completion of the root canal treatment.

Calcium Compounds↗
PubMed2006

Effect of five staining solutions on the colour stability of two acrylics and three composite resins based provisional restorations.

The effect of coffee, tea, coca-cola, orange-juice and red wine on the colour stability of acrylic and composite based provisional materials were evaluated. Two acrylic resins and three composite resins were studied. 48 standardized specimens for each provisional material were prepared. Each group was divided into 6 subgroups. Specimens from each group were immersed in staining solutions at room temperature for 30 days. Red wine and tea caused the most significant colour changes and orange juice showed the least significant colour changes. deltaE of all of the provisional restorations materials was changed after the immersion in all of the staining solutions during the experimental process.

Acrylic Resins↗
PubMedDate not supplied

Flare-ups incidence and severity after using calcium hydroxide as intracanal dressing.

Acute pain and swelling following endodontic treatment are a challenge for both the patient and the dentist. According to previous studies, the incidence of flare-ups increases after endodontic treatment of teeth with necrotic pulps. Calcium hydroxide is currently used as a multi-purpose drug in root canal therapy. The aim of this study was to evaluate the incidence and severity of flare-ups after treatment of pulpless teeth using calcium hydroxide as an intracanal dressing. Sixty patients with single-root necrotic teeth participated in this study. These patients were randomly divided into three groups of 20. The patients were treated in Group A in a single-visit approach, in group B with a two-visit approach without any intracanal dressing and group C with a two-visit approach using calcium hydroxide as an intracanal dressing for one week. All of the patients were followed for 72 hours after each treatment session. The information about the incidence and severity of pain and swelling was recorded in tables, using a modified Visual Analogue Scale for pain severity measurement and a scale with four degrees for measuring the severity of swelling. The data were analyzed by chi-square test and GENMODE procedure.

Calcium Hydroxide↗
PubMed2006

Immediate provisional restoration of postextraction implants for maxillary single-tooth replacement.

The timing of implant placement and loading following tooth extraction has recently undergone substantial reconsideration. The authors tested a protocol of immediate loading of single implants placed at the time of tooth extraction in a consecutive case series. Thirty-three patients received a single implant-supported crown to replace a maxillary anterior tooth at the time of extraction. Regular recalls were planned for the following 4 years. One implant did not integrate, and another became unstable secondary to facial trauma. Overall patient satisfaction and clinical and radiographic parameters were good.

Adult↗
PubMed1991

Intracanal medications and antibiotics in the control of interappointment flare-ups.

Acute exacerbation of symptoms, or "flare-up," after the debridement of the root canals and provisional restoration is a well-known postoperative complication of endodontic treatment. In this clinical study, various types of intracanal medications were compared for their ability to decrease interappointment flare-ups. The result showed that use of intracanal medicaments containing anti-inflammatory agents in combination with the administration of prophylactic systematic antibiotics was the most effective method of controlling interappointment flare-ups.

Acute Disease↗
PubMed1991

[Prosthetic rehabilitation of a case of total amelogenesis imperfecta].

A young adolescent girl suffering from Amelogenesis imperfecta was examined. The treatment plan: teeth kept vital, preparation of provisional resin crowns and their replacement by definitive single crowns. Thus re-establishing aesthetics and function, and furthermore the possibility of giving this young patient the pleasure of finally being able to smile, no longer hiding her teeth.

Adolescent↗
PubMed1991

Visible light-hardened glass-ionomer cement base/liner as an interim restorative material.

A visible light-hardening, glass-ionomer cement, dentinal base/liner has been used as a dentinal and enamel replacement restorative material for certain lesions in primary teeth. The material has all the advantages of glass-ionomer cements and the additional advantage of rapid hardening by light curing. The procedure for using the material as a restorative material in primary teeth is described, and several cases are documented.

Child, Preschool↗