Veneer
Veneer ( English for veneer ) or veneer shell is a wafer-thin, translucent ceramic shell for the teeth , which is applied to the tooth surface - especially the front teeth - with a special adhesive . The adhesive shell is made of ceramic . Apart from rare allergies to the luting material, the use of ceramic veneers does not usually pose a health risk because the ceramic material is very biocompatible. Problems only arise with very solidly fluoridated tooth enamel . In addition, the necessary grinding measures involve the risk of chronic pulpitis (inflammation of the tooth pulp), which the doctor must explain.
With veneers, slight tooth misalignments, tooth gaps, unsatisfactory tooth colors and local discolorations can be corrected. Veneers give the visible surfaces of the teeth an optimized appearance. As a rule, old plastic fillings or corner structures are removed when they are used .
Existing long-term clinical studies show that only two percent of ceramic veneers are lost within six years. This positive balance led to the approval of the procedure by the German Society for Dentistry, Oral and Maxillofacial Medicine (DGZMK).
All-ceramic restoration
The ceramic material used is translucent and tooth-colored and thus enables a very aesthetic tooth appearance. In addition, it is chemically inert , which means that it does not go into solution in the mouth and is therefore very biologically compatible.
Action
A layer (0.3–1.0 mm) is removed from the tooth enamel. This preparation is carried out according to the anatomical conditions with the aim of achieving an optimal cosmetic and durable result. An impression is taken . The temporary restoration is carried out with plastic veneers. The dental technician fabricates the veneer on the model and gives it to the dentist for insertion. After the try-in by the dentist, the tooth is cleaned and ideally dried with the help of a rubber dam . The tooth enamel is etched and any exposed dentin is treated with a so-called dentin adhesive. The ceramic veneer is treated with a special ceramic etching gel and silanized in order to ensure good adhesion of the composite plastic adhesive. Bonding the ceramic to the tooth is quite time-consuming and generally takes around 30 minutes per tooth with all the preparatory measures.
By using new techniques , it is possible to produce veneers in the thickness of contact lenses (approx. 0.2 mm). They offer the advantage that they can be applied directly to the hard tooth substance , i.e. without prior grinding of the tooth. These non-prep or non-invasive veneers also offer the option of extended indications. In contrast to conventional veneers, they can also be adhesively attached to previous plastic fillings, ceramic crowns or bridges.
Patented further developments enable enormous time savings through so-called insertion aids, since all veneers of a patient can be inserted simultaneously. This procedure saves around 80-90% of the time that was required for conventional veneers and significantly reduces the cost factor.
Depending on the quality and effort required for veneers (ceramic or hybrid plastic), a veneer costs between € 300 and € 1,500.
Whether and to what extent a patient with private health insurance is then to be reimbursed for the fee and laboratory costs for the production and use of such preparations by his health insurance provider is sometimes a matter of dispute. If the veneer is not only used for aesthetic reasons, but is to be viewed as a justifiable curative treatment, the Frankfurt am Main regional court ruled in 2004 that private health insurance is obliged to reimburse.
history
The first veneers were made in the 1930s, back then as plastic veneers. Child star at the time, Shirley Temple , reportedly had milk teeth that were too short. On set, her dentist always had to be present with a number of veneers for her. The adhesive technology was not yet known at the time. These early veneers were much thicker than today's. They had to be laboriously glued on with denture adhesive paste and only lasted a few hours on the tooth surfaces. It was the California dentist Charles L. Pincus, the founder and first president of the American Academy of Aesthetic Dentistry, who stated in a 1937 presentation to the California State Dental Association (now in Sacramento): “A winning smile that has an even series of showing natural, shimmering white teeth is an essential factor in achieving that difficult-to-describe, all-defining characteristic called personality. "Pincus, who treated stars like Marilyn Monroe and James Dean and died in 1986 at the age of 82, together with Ronald Goldstein is considered the "father of veneers". For his services he was u. a. inducted into the Hall of Fame at the University of Southern California.
Veneers are made by dental technicians or in state-of-the-art CAD / CAM centers. There are dental technicians who specialize in the manufacture of ceramic veneers for cosmetic restorations.
Web links
Individual evidence
- ^ Decision of the OLG Hamm dated May 30, 2011.
- ↑ Siegbert Witkowski: Prep veneers & non-prep veneers . Quintessenz Verlag, 2010, ISBN 978-3-86867-030-1 ( limited preview in Google book search).
- ↑ Regional Court Frankfurt am Main, judgment of July 22, 2004 , Az. 2/23 O 299/01, reference to the full text.
- ↑ M. Kern, K. Kunzelmann: Smile for more self-confidence? Dental Tribune May 6, 2011 (PDF) ( Memento of the original from April 22, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ CL Pincus: Building mouth personality. California State Dental Association, San Jose, California 1937.
- ↑ articles.latimes.com
