Many translated example sentences containing "crowning" – German-English dictionary and search engine for German translations. Crowning Definition: the stage of labour when the infant's head is passing through the vaginal opening | Bedeutung, Aussprache, Übersetzungen und Beispiele. crowning Bedeutung, Definition crowning: 1. A crowning event or achievement is the best or most important one: 2. being the best or most successful part of an.
Crowning Video(HD) Miss Universe 2018 - Crowning Moment Need even crowning definitions? The Journal of the American Dental Association. Generally direct temporary crowns tend to be for short-term use. See the full definition for crown in the English Language Learners Dictionary. Verb Over the weekend, the internet crowned a new viral star: Even seit wann gibt es die champions league porcelain-fused-to-metal and all-ceramic crowns were developed, preserving any amount of tooth structure adds to the overall strength of the tooth. Single crowns versus conventional fillings for the restoration of root filled teeth. The porcelain can be color matched to the adjacent teeth or gingivae. The Journal of Prosthetic Dentistry. The power, live stream dkb handball bundesliga, or empire of a monarch or of a state governed by constitutional monarchy. Short-term temporary crowns are generally appropriate for simple restorative cases whilst complex cases involving more that one tooth often require long-term temporary crowns. A variety new netent casino no deposit bonus metal alloys containing precious metals and base metals can be used.
English Their election is the crowning glory of the democratisation process in Taiwan. English It is true that the introduction of the euro is the crowning glory of the internal market.
English The first reason is that transplants are perceived as a crowning achievement of modern medicine. English I hope with all my heart that his crowning achievement, this directive, will go through with solid support from Parliament.
English It does not seem at all likely that we will be able to bring this agreement off as a crowning achievement, if we can bring it off at all.
English While desirable in itself, a constitution of this kind could only be adopted as the crowning touch to far-reaching institutional reform.
English The crowning argument concerned the disproportion between the role played by agriculture in the economy and employment and its share of the EU budget.
Denver Nuggets vs Minnesota Timberwolves score," 11 Apr. Team of the year, player of the year, and more," 13 Apr.
Verb Over the weekend, the internet crowned a new viral star: Gitlin, Ars Technica , "Open mind, wide open throttle: First Known Use of crown Noun 12th century, in the meaning defined at sense 1 Verb 12th century, in the meaning defined at transitive sense 1a.
Learn More about crown. Resources for crown Time Traveler! Explore the year a word first appeared. Phrases Related to crown crowning glory jewel in the crown the crown to crown it all.
Time Traveler for crown The first known use of crown was in the 12th century See more words from the same century.
More Definitions for crown. More from Merriam-Webster on crown Thesaurus: All synonyms and antonyms for crown Spanish Central: Translation of crown Nglish: If this functional cusp bevel is not present and the crown is cast to replicate the correct size of the tooth, bulk of material may be too little at this point to withstand occlusal surfaces.
This should allow enough thickness for the material chosen. Depending on the type of crown to be fitted, there is a minimum preparation thickness.
Generally, full metal crowns require at least 0. In order for the cast restoration to last in the oral environment and to protect the underlying tooth structure, the margins between cast and tooth preparation need to be as closely adapted.
The marginal line design and position should facilitate plaque control, allow for adequate thickness of the restorative material chosen therefore providing enough strength for the crown at the margin.
Several types of finish line configurations have been advocated, each having some advantages and disadvantages see the table below.
Chamfer finish are normally advocated for full metal margins and shoulders are generally required to provide enough bulk for metal-ceramic crowns and full ceramic crown margins.
Some evidence suggests adding a bevel to margins, especially where these are heavy, to decrease the distance between the crown and the tooth tissue.
Linked to marginal integrity, placement of the finish line can directly affect the ease of manufacturing the crown and health of the periodontium.
Best results are achieved where the finish line is above the gum line as this is fully cleanable. They should also be placed on enamel as this creates a better seal.
Where circumstances require the margins to be below the gum line, caution is required as several problems can arise. First, there might be issues in terms of capturing the margin when making impressions during the manufacturing process leading to inaccuracies.
In these cases, crown lengthening surgery should be considered. Endodontically-treated teeth, especially those with little sound tooth tissue, are prone to fractures.
The successful clinical outcome for these teeth relies not only on adequate root canal treatment, but also on the type of restorative treatment used, including the use of a post and core system and the type of extra-coronal restoration selected.
Some evidence advocates the use of a ferrule to optimise the bio-mechanical behaviour of root-filled teeth, especially where a post and core system needs to be used.
It also reduces stress transmission to the root due to non-axial forces applied by the post during placement or during normal function.
The ferrule can also help preserve the hermetic seal of the luting cement. It has been suggested that protection acquired by the use of a ferrule occurs due to the ferrule resisting functional lever forces, wedging effect of tapered posts and lateral forces during post insertion.
Stainless steel preformed metal crowns are the treatment of choice for the restoration of posterior primary teeth.
A systemic review found that it has the highest success rate Also, composite veneering can be done after preparing retentive grooves on the buccal surface of stainless steel crowns.
The Hall Technique is a non-invasive treatment for decayed posterior primary teeth where caries are sealed under a preformed stainless steel crown.
This technique requires no tooth preparation. It is very likely that once a tooth has been prepared and whilst waiting for the definitive restoration, the tooth preparation is fitted with a temporary crown.
Temporisation is important after tooth preparation in order to: Temporary crowns can also play a diagnostic role in treatment planning where there is a need for occlusal, aesthetic or periodontal changes.
Temporary crowns can be described by: Temporary crowns can be described as short-term , if used for a few days, medium-term , if their planned use for several weeks and long-term if their planned use is for several months.
The choice in length of temporisation often relates to the complexity of restorative work planned. Short-term temporary crowns are generally appropriate for simple restorative cases whilst complex cases involving more that one tooth often require long-term temporary crowns.
Temporary crowns can either be direct , if constructed by the dentist in the clinic, or indirect if they are made off-site, usually in a dental laboratory.
Generally direct temporary crowns tend to be for short-term use. Where medium-term or long-term temporisation is required, the use of indirect temporary crowns should be considered.
There are several materials that can be used to construct temporary crowns. Direct temporary crowns are either made using metal or plastic pre-formed crowns, chemically-cured or light-cured resins or resin composites.
Indirect restorations are either made of chemically-cured acrylic, heat-cured acrylic or cast in metal. Unlike cementation of definitive crowns, temporary crowns should be relatively easy to remove.
For this reason softer cements are used when cementing temporary crowns. These tend to be zinc oxide eugenol cements.
Once the tooth in question has been prepared with acceptable dimensions, it is equally important to make a accurate and dimensionally stable record or impression of the preparation or dental implant, surrounding hard and soft tissues as well as the opposing dental arch so that the restoration created will conform to the required dimensions and ensure the fit is as close as possible without having to make many modifications chair-side.
Impressions can be made digitally or by conventional technique. With regards to conventional impression techniques, the materials selected should have appropriate physical properties and handling characteristics to allow enough detail reproduction and durability when casting a model, including the ability to withstand effective decontamination procedures.
Digital impressions can be made using dedicated optical scanners. A review suggests that digital impressions provide the same accuracy as conventional impressions and are found to be more comfortable for patients and easier for dental practitioners.
After selecting the proper features and making various decisions on the computerized model, the dentist directs the computer to send the information to a local milling machine.
After about 20 minutes, the restoration is complete, and the dentist sections it from the remainder of the unmilled ingot and tries it in the mouth.
If the restoration fits well, the dentist can cement the restoration immediately. As a matter of fact, the more enamel that is retained, the greater the likelihood of a successful outcome.
As long as the thickness of porcelain on the top, chewing portion of the crown is 1. Although no dental restoration lasts forever, the average lifespan of a crown is around 10 years.
While this is considered comparatively favorable to direct restorations , they can actually last up to the life of the patient 50 years or more with proper care.
One reason why a year lifespan is quoted is because a dentist can usually provide patients with this figure and be confident that a crown that the dental lab makes will last at least this long.
Many dental insurance plans in North America will allow for a crown to be replaced after only five years. The most important factor affecting the lifespan of any restorative is the continuing oral hygiene of the patient.
Other factors are the skill of the dentist and their lab technician, the material used and appropriate treatment planning and case selection. Full gold crowns last the longest, as they are fabricated as a single piece of gold.
PFMs, or porcelain-fused-to-metal crowns possess an additional dimension in which they are prone to failure, as they incorporate brittle porcelain into their structure.
Although incredibly strong in compression , porcelain is terribly fragile in tension , and fracture of the porcelain increases the risk of failure, which rises as the number of surfaces covered with porcelain is increased.
A traditional PFM with occlusal porcelain i. When crowns are used to restore endodontically treated teeth, they reduce the likelihood of the tooth fracturing due to the brittle devitalized nature of the tooth and provide a better seal against invading bacteria.
Although the inert filling material within the root canal blocks microbial invasion of the internal tooth structure, it is actually a superior coronal seal, or marginal adaptation of the restoration in or on the crown of the tooth, which prevents reinvasion of the root canal.
However , if marginal gaps occur between the crown and the endodontically filled tooth, it will lead to the dissolution of the cement luting agent and eventually to the failure of restoration.
There are many different methods of crown fabrication, each using a different material. Available evidence suggests that all-ceramic crowns last about the same length of time or less than metal—ceramic crowns.
Porcelain-fused-to-metal dental crowns PFMs have a metal shell on which is fused a veneer of porcelain in a high heat oven.
The metal provides strong compression and tensile strength, and the porcelain gives the crown a white tooth-like appearance, suitable for front teeth restorations.
These crowns are often made with a partial veneer that covers only the aspects of the crown that are visible. The remaining surfaces of the crown are bare metal.
A variety of metal alloys containing precious metals and base metals can be used. The porcelain can be color matched to the adjacent teeth or gingivae.
Popularly known as the "Empress crown," the leucite reinforced system is superficially similar to a gold crown technique in that a hollow investment pattern is made, but the similarities stop there.As there are currently no biologically compatible cements which are able to hold the crown in place solely through their adhesive properties, the geometric form of the preparation are vital in providing retention and resistance to hold the crown in place. Switch to new thesaurus. A review suggests that digital impressions provide the same accuracy as conventional impressions and are found to be more comfortable for patients and easier for dental practitioners. Dental implant Mario basler jung dentistry Dental laboratory. For this reason softer cements are used when cementing temporary crowns. English The australia online casino ban chapter is, of course, the paysafecard 10€ achievement of the accession negotiations. Eur J Oral Sci. Cores without glass must be oversized to compensate for shrinkage that occurs when the core is fully sintered. First, there might be issues in terms of capturing the margin when making impressions during the manufacturing process leading to inaccuracies. These ceramics, however, suffer from poor mechanical strength, and therefore often used for veneering stronger substructures. Within the context of prosthodontics, retention refers to resistance of movement of a restoration along the path of insertion or along the long axis of promo code platin casino tooth. The marginal line design and position kostüm gebraucht facilitate plaque control, allow australia online casino ban adequate thickness of the restorative material chosen therefore providing enough strength for the crown at the margin. English Taoiseach, your success in this area has become your and our crowning glory. Although it may be seen as contradictory to the fritz box einstellungen aufrufen statement, at times, sound tooth structure may need to be sacrificed in order to prevent further more substantial and uncontrolled loss of tooth structure.