PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 9524476

Gold Electroforming System: GES restorations.

F Behrend
View original source ↗Export metadata ↓

Abstract

The use of electrolysis as a means of forming a substructure for porcelain-fused-to-metal inlays, onlays, full crowns and even bridges has many advantages over the use of cast metal. Composed of pure gold deposited directly onto a duplicate die, electroformed copings have a high degree of biocompatibility and accuracy for increased durability (photograph 18). The internal surfaces of the coping match the exterior of the duplicate die exactly, and the thickness of the material deposited is a uniform 0.2mm. Marginal accuracy on completed restorations is on average 19 microns. The gold has the added advantage of burnishability. Recent developments in equipment and technique have placed this form of substructure well within the scope of consideration for most ceramics laboratories.

Explore related subjects

Dental AbutmentsElectrolysisElectroplatingGoldHumansMetal Ceramic AlloysMetallurgyTechnology, DentalJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

F Behrend. 1997. Gold Electroforming System: GES restorations.. https://pubmed.ncbi.nlm.nih.gov/9524476/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2007

Influence of attachment wear on retention of mandibular overdenture.

UNLABELLED: The aims of this study were: (i) to evaluate and compare retention of two-teeth (implant) supported mandibular overdenture with either stud or magnetic attachments during linear (axial) and rotational (paraxial) dislodgements; (ii) to compare retentive properties before and after wear simulation. The test group consisted of five magnetic and four stud overdenture attachments (n = 12 specimens for each attachment type). Retention in axial direction was evaluated on one-tooth (implant) model by measuring maximum retentive force (N) and range of retention (mm) during the linear dislodgement. Retention in the paraxial direction was evaluated on mandibular-overdenture model by measuring the maximum retentive force (N) during three types of rotational dislodgements - anterior, lateral and posterior. The minimum number of cycles required to simulate wear was determined by special wear test. Afterwards, the wear was simulated in the test group, and retention in axial and paraxial directions was measured again. STATISTICAL ANALYSIS: one-way anova, Scheffe post hoc and paired-samples t-tests (P < 0.05). Initially, studs had higher retention (4-11 N) than magnets (4.5-6 N) in axial direction. After the wear simulation, it had decreased from 76% to 48% for some of the studs and had become similar to the retention of magnetic attachments. Magnets had lower retention range (0.2-0.3 mm) than studs (0.5-1.1 mm). Studs provided similar or higher retention in paraxial directions than magnetic attachments both before and after wear simulation. Retentive properties of magnets decreased mostly with posterior rotational dislodgement. Retentive properties of stud overdenture attachments were less constant.

Dental Abutments↗
PubMed2006

Transitioning patients from teeth to implants.

One major obstacle to treatment with implants is the transitional phase between a tooth supported occlusion and an implant supported occlusion. This is of particular concern when a patient with a failing dentition has not worn a removable prosthesis before and is planning to have a reconstruction supported by implants.

Dental Abutments↗
PubMed2006

Impression techniques for implant dentistry.

The object of making an impression in implant dentistry is to accurately relate an analogue of the implant or implant abutment to the other structures in the dental arch. This is affected by use of an impression coping which is attached to the implant or implant abutment. This impression coping is incorporated in an impression - much as a metal framework is 'picked up' in a remount impression for fixed prosthodontics. With implant copings the coping is usually attached to the implant or abutment with screws. The impression material used is usually an elastomeric impression material; the two types most widely used and shown to be the most appropriate are polyether and polyvinyl siloxane impression materials.

Dental Abutments↗