Biomedical subjects

L J Stumpel

Publications and source records attributed to L J Stumpel.

10 recordsLinked to original sources

PubMed2001

Immediate stabilization at stage II of zygomatic implants: rationale and technique.

The severely resorbed maxilla presents a challenge for the maxillofacial surgeon and the restorative dentist planning implant restorations. The Zygomatic implant, as introduced by Brånemark, allows for the surgical placement of implants to restore resorbed maxillae without major grafting procedures. A minimum of 2 implants in the anterior maxilla are used in conjunction with 1 implant in each zygoma to support a prosthesis. Fabricating a passive bar to connect the implants at phase II surgery may require 1 to 2 days. With the adhesive abutment cylinder luting technique, a rigid framework can be delivered within 1 hour of uncovering the implants. This approach saves considerable time over conventional techniques and allows for the restoration of severely resorbed maxillae in an efficient and routine manner. The technique also eliminates the necessity for a technician to be available on-site for the procedure.

Composite Resins↗

PubMed2001

The all-ceramic cantilever bridge: a variation on a theme.

All-ceramic crowns have become a dependable treatment modality. As a result, there is interest in expanding this modality to all-ceramic bridge-work. This article describes a modification of the CAD/CAM all-ceramic Procera technique, which allows the fabrication of a single-unit cantilever ceramic bridge using existing equipment and procedures. The stress-bearing areas of the bridge are made of densely sintered high-purity alumina without ceramic-fusing material. Although the indications for this bridge are limited, this technique adds to the dentist's armamentarium of esthetic restorations.

Aluminum Oxide↗

PubMed2000

Customized abutments to shape and transfer peri-implant soft-tissue contours.

With the functional successes of implant therapy being realized, the emphasis is shifting to the creation of tooth-like esthetics with implant therapy. Dental implants are placed after careful planning and site preparation, which may include bone and soft tissue grafting. The final soft tissue appearance is enhanced through the early use of provisional restorations. A combination technique is described to fabricate provisional healing abutments for cement-on prostheses and to transfer the individualized peri-implant soft-tissue contours to the dental laboratory. This technique will allow the practitioner to deliver highly customized implant care with familiar techniques and readily available materials.

Dental Abutments↗

PubMed1996

Implant bar design, the next generation.

The rationale for implant-supported overdenture therapy is discussed with emphasis on diagnosis (why) and consequential therapy (how). After the conventionally available bar designs are discussed, the newer CEKA bar is discussed. This design of the next generation enables individualization of the essential functions of an implant bar, namely occlusal support, lateral stability and retention.

Dental Implantation, Endosseous↗

PubMed1994

The adhesive-corrected implant framework.

To avoid stress between bone, implant and supra construction, the connection between implants must be passive. This is clinically difficult, if not impossible, to achieve with current procedures. Two techniques are presented in which pre-machined titanium abutment cylinders or discs are intra-orally luted to a cast supra structure. The objective is to create a stress-free implant frame-work connection. Possible advantages and disadvantages are discussed.

Bite Force↗

PubMed1993

Adhesive abutment cylinder luting.

The connection between dental implants must be passive so that stress is not introduced between bone, implant, and prosthesis. To achieve this passivity clinically is difficult if not impossible with current procedures. A technique is presented in which premachined titanium abutment cylinders are clinically luted to a cast framework to create a stress-free connection. Possible advantages and disadvantages are discussed.

Adhesives↗

PubMed1991

Use of a multifunctional precision attachment in a fixed partial denture with limited periodontal support. A clinical report.

A multifunctional precision attachment used in a fixed partial denture with questionable prognosis enhances the serviceability of the reconstruction. In the treatment presented, future loss of the posterior abutments will not jeopardize the complete rehabilitation. Osseointegrated implants used in conjunction with a fixed prosthesis or a removable partial denture can restore the missing segments.

Cuspid↗

PubMed1991

[Structured communication between dentist and laboratory].

Dentist and dental laboratory technician are closely related partners in the dental team. To ensure quality care, communication and understanding of mutual capabilities and limitations is of the utmost importance. Ambitions and goals need to be assessed after which general specifications can be agreed on. Regarding the case communication, a division is made between subjective and objective information. A few means of case communication are discussed.

Communication↗

PubMed1989

Cross-pin fixation for fixed partial dentures.

A technique is described in which a standardized post system is used as a cross pin. The pin is partially embedded in the mesial or distal aspect of the abutment tooth and the remainder of the pin diameter is incorporated in the metallic substructure of the fixed partial denture. The cemented pin will add retention and resistance to the fixed partial denture. The differences between threaded and smooth cross pins are discussed.

Cementation↗

PubMedDate not supplied

The bonded porcelain margin in porcelain-fused-to-metal prosthetics.

Progress in dentistry is often made when existing techniques and products are combined with new developments. For example, although porcelain has been used for decades and Buonocore reported on its use in 1955, only in early 1980 did bonded porcelain become popular. Today, we assume that porcelain facings and inlays are an integral part of dentistry.

Acid Etching, Dental↗