Statement of problem:
Several factors exist which result in crown preparations that are less than ideal. In these situations, the clinician should find a practical way to overcome the lack of resistance of the compromised tooth preparation.
Purpose:
The purpose of this study was to evaluate the effect of different auxiliary features on the resistance form of crowns with reduced axial wall height and increased total occlusal convergence.
Material and methods:
An Ivorine tooth was prepared on a milling machine with 22 degrees of total occlusal convergence (TOC), 3.0 mm of occlusocervical height, and a chamfer finish line (Group Ctrl). The crown preparation was subsequently modified to include proximal grooves (Group Grv), and reduced TOC from 22 to 4 degrees in…
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MedWorm: Dentistry
Posted in Dental News.
Tagged with auxiliary, cast, complete, Crowns, features, form, Influence, molars, prepared, resistance, short.
By elkhornadmin
– November 8, 2011
Statement of problem:
The replication of natural teeth, especially for single tooth restorations in patients with high esthetic needs, represents a challenge.
Purpose:
The purpose of the study was to analyze the color of the cervical portion of single metal ceramic crowns fabricated with different metal framework designs.
Material and methods:
The color, as measured on the CIELAB color scale, of 3 different groups of restorations (n=10) fabricated with a high noble metal alloy (V-Deltaloy) and feldspathic porcelain (Noritake Super Porcelain) was analyzed with a colorimeter. Conventional metal ceramic crowns with metal facial margins were compared to metal ceramic crowns with porcelain facial margins and a horizontal reduction of the metal framework (1.0 mm re…
MedWorm: Dentistry
Posted in Dental News.
Tagged with ceramic, cervical, color, Crowns, design, framework, Influence, metal.
By elkhornadmin
– November 8, 2011
Stephen Sicklemore was a properly qualified technician but illegally created the impression he was able to make and fit false teeth .
Dentures News
Posted in Dental News.
Tagged with Bogus, Dentist, false, fitted, image, Main, Teeth.
By elkhornadmin
– November 8, 2011
Dental treatment involving crown replacements costs the Swedish tax payers hundreds of millions SEK each year. Researchers at Chalmers University of Technology are developing a new method for determining exactly how to optimally prepare a tooth to place a crown on it…
Dentistry News From Medical News Today
Posted in Dental News.
Tagged with attachment, better, Crowns, Dental, Mathematics, Provides.
By elkhornadmin
– November 8, 2011
Statement of problem:
Different surface conditioning, cleaning methods, and ceramic primers are used to improve bonding to zirconia ceramic. However, maintaining a durable bond with zirconia ceramic under various clinical conditions remains a challenge.
Purpose:
This in vitro study investigated the durability of the bond strength of adhesive luting cement to zirconia ceramic after the application of a new universal primer.
Material and methods:
Ninety-six disks were fabricated from zirconia ceramic (e.max ZirCAD). Disks were conditioned either with airborne-particle abrasion with 110 μm Al2O3 (AB) or silica-coated (SC). Thereafter, disks were cleaned either with oil-free air (A) or by ultrasonic cleaning (U) in alcohol. A conventional silane (S) (EspeSil) or…
MedWorm: Dentistry
Posted in Dental News.
Tagged with bonding, ceramic, Longterm, primer, resin, universal, zirconia.
By elkhornadmin
– November 7, 2011
To receive tables of contents by e-mail, sign up through our Web site at http://www.journals.elsevierhealth.com/periodicals/ympr. Log on and click â??Registerâ? in the upper right-hand corner. After completing the registration process, click on â??My Alerts,â? then â??Add Table of Contents Alert.â? Select the category â??Mosbyâ? or type The Journal of Prosthetic Dentistry in the search field and click on the Journal title. The title will then appear, and having already completed the Registration process, you may add tables of contents alerts by accessing an issue of the Journal and clicking on the â??Add TOC Alertâ? link. (Source: Journal of Prosthetic Dentistry)
MedWorm: Dentistry
Posted in Dental News.
Tagged with Contents, Email, Receive, Tables.
By elkhornadmin
– November 7, 2011
Stephen Sickelmore, trading as ‘The Denture Clinic’, ran an illegal denture fitting and supply business from his home on Old Gatehouse Road, visiting people in their home to take teeth moulds which he was not legally qualified to do.
Dentures News
Posted in Dental News.
Tagged with carrying, convicted, Dawlish, dentistry, illegal.
By elkhornadmin
– November 7, 2011
Statement of problem:
Endodontic access preparation through lithium disilicate ceramic restorations may damage the restoration and compromise its load-bearing capability.
Purpose:
The purpose of this in vitro research was to investigate the effect of simulated endodontic access preparation through lithium disilicate glass-ceramic restorations on their load to failure.
Material and methods:
Sixty lithium disilicate glass-ceramic (IPS e.max CAD) complete-coverage restorations were milled and crystallized. Five coats of die relief were applied internally in the crown to provide a cement space approximately 60 μm in thickness. Composite resin dies were fabricated by backfilling each crown. The specimens were then stored at 37°C and 100% humidity for 30 days. Th…
MedWorm: Dentistry
Posted in Dental News.
Tagged with access, disilicate, effect, endodontic, failure, glassceramic, lithium, load, preparation, restorations.
By elkhornadmin
– November 7, 2011
Regular visits to your dentist can help you keep your teeth bright and shining. They can also tell you about the state of your general health, as poor oral health may be an indication of your overall health.
Dentures News
Posted in Dental News.
Tagged with Africa, Body, Healthy, smile, South.
By elkhornadmin
– November 7, 2011
Clinical performance of cervical restorations-a meta-analysis Heintze SD, Ruffieux C, Rousson V. (Source: Journal of Prosthetic Dentistry)
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MedWorm: Dentistry
Posted in Dental News.
Tagged with Abstracts, Current, Literature, Noteworthy.
By elkhornadmin
– November 7, 2011
