Dental Restauration
Composite resin
White, composite resin is an attractive material used to restore anterior and posterior teeth. The composite resin is used to correct defects caused by decay, fracture or a bad tooth position. It is mainly composed of a polymer (plastic) and very hard and very small inert particles.
Employment
- The composite resin is indicated to replace broken or lost restorations and to restore some of the tooth destroyed by decay of small or medium size. It is resistant to fracture and wear and can last several years.
- Smoother version of this material is used as a sealant to prevent the development of caries in pits and fissures that are on top of the teeth at the back of the mouth. Used most commonly in children, the sealant can also be used in adults.
Benefits
- Available in several different colors around the teeth shades, composite resin is very aesthetic.
- The cavity prepared by the dentist to correct the decay is often less at the level of posterior teeth, as an amalgam.
Disadvantages
- When the composite resin is used in large-scale preparations of the posterior teeth, it is less durable than amalgam.
- If there is loss of sealant, the risk of secondary caries (cavities adjacent to a region already restored) is higher.
- The composite resin restorations are more expensive than amalgam restorations.
Porcelain Dental Veneers
Dental veneers are a form of cosmetic dentistry in which a shell or layer of tooth-colored porcelain or composite is placed over the facial surfaces of your teeth to correct worn tooth enamel, uneven tooth alignment or spacing, discoloration and chips or cracks.
Although dental veneers fall into the category of cosmetic dentistry because they create bright, white smiles with beautifully aligned, shapely teeth, they also protect the surface of damaged teeth and may eliminate the need for more extensive treatments. Other benefits of veneers include durability, an improved smile appearance, and the need for little-to-no removal of tooth structure compared to crowns.
Cosmetic Veneers
Regardless of what causes unattractive teeth, dental veneers may solve most or even all of your cosmetic dental issues, including:
Worn enamel: Over time, the thin, hard translucent substance covering your teeth (enamel) may become worn, dulled and discolored. Such wear and discoloration may be natural or result from a genetic predisposition. However, it often results from consuming soft drinks, tea or coffee; smoking; using certain medications, etc.
Wear and tear: Teeth naturally wear down as people age. Aged teeth are more likely to have chips, cracks or a generally uneven appearance.
Genetics: Certain people are born with abnormal spacing between their teeth that widens with age.
Uneven teeth: Uneven teeth can result from tooth grinding or general wear and tear.
Porcelain Veneers and Composite Resin Veneers
The two most common materials used to fabricate or create dental veneers are composite resin and porcelain. Indirect (created outside of your mouth) porcelain veneers and composite veneers are made by a dental technician in a dental laboratory; direct (created directly on your teeth) composite veneers are made by your dentist during your appointment at the dental office.
Porcelain dental veneers are more appropriate solutions for severe cases involving dullness, wear, discoloration, extensive chipping, cracking, spacing or uneven teeth.
Composite bonding or just bonding — which refers to direct composite veneers — is an inexpensive, effective and minimally invasive way to restore and correct small chips, cracks and discoloration in the teeth.
When are Veneers Appropriate?
The removal of any natural tooth structure is permanent, so cosmetic dentists today prefer to offer patients the most minimally invasive options first. If your natural teeth are functionally and esthetically adequate, dental veneers may not be an appropriate treatment for you.
However, if you have severely dull or discolored teeth, your treatment options may include porcelain dental veneers or composite veneers. Veneers do have the added benefits of longevity and a proven ability to enhance the appearance of the mouth, smile and other facial features that are better supported by properly shaped teeth.
Care of Dental Veneers
Care must be taken not to abuse veneers because the thin porcelain shells or composite layers can be damaged or break.
Your dentist may advise you against certain uses or dietary tendencies (such as eating carrots) and may recommend you wear a protective appliance while sleeping, especially if you are a bruxer.
The many benefits of CEREC technology
Are you teeth tired, cracked, and lackluster? Our exclusive treatment will strengthen your teeth in a single visit. Ceramic crown/inlay will make your teeth look naturally perfect. The cerec is a proven, durable, fast dental restoration method to restore form and function to your teeth. The doctor will explain the procedure to you and answer any questions you might have. Once the affected tooth is prepped, an optical imprint of the tooth is captured with a camera. You can actually watch the virtual restoration of your tooth in 3D animation. In minutes, a ceramic work of art is formed and polished to resemble tooth enamel before being affixed to the tooth.
CEREC technology offers a non-metal ceramic material with the highest precision, aesthetic, and function. Your crown/ inlay is performed in one visit and has a life that is 3 times longer than conventional restorations.
Gold
A crown made of gold alloy is the one that lasts the longest. It resists very well to chewing forces, it rarely breaks, and it causes very little wear to opposing teeth. The gold's metallic colour is the main disadvantage of this type of crown and this factor reduces its popularity. However, gold would be a good choice for a molar that does not appear when a person smiles. Gold crowns are made in a laboratory with an impression that the dentist takes of the tooth; it is therefore necessary to protect the tooth with a temporary crown during this period of a few weeks.
Porcelain and Gold
A crown made of porcelain fused to gold is a more aesthetic crown than the one made of gold alloy. Porcelain can make a crown look very similar to a natural tooth. The gold part, which is located below the porcelain, helps give strength to the tooth. Porcelain is very strong, but is less strong than gold and can fracture. Sometimes the gold under the porcelain may show, especially at the gum level. This type of crown is also fabricated in the laboratory with an impression of the tooth, and a temporary crown is needed during that period of fabrication.
Procelain
An all ceramic crown is the most aesthetic crown because it is made of porcelain only. Its shape and colour can match the qualities of natural teeth very closely. This crown is however less solid than gold crowns or porcelain fused to gold, although new varieties of porcelain which are more and more resistant are coming out on the market. Porcelain only crowns are recommended for anterior (front) teeth to favour beauty and offer a better looking smile. Porcelain crowns are generally fabricated in a dental laboratory.
Bridges
A bridge allows replacing one or many absent teeth by attaching to adjacent teeth, one on each side (abutments). It is made of crowns soldered one to another. The bridge is fixed with cement and cannot be removed.
In addition to replacing the absent teeth, the abutment teeth are restored like crowns. A bridge is therefore recommended when the adjacent teeth have big fillings or root canals.
Why replace an absent tooth?
- To cover up an unaesthetic space.
- To improve chewing and talking.
- To avoid the rest of the teeth from taking the full load of chewing and in time making them weaker.
- To avoid the rest of the teeth from moving or leaning, thus creating gum problems.
- An unbalanced chewing can lead to serious problems, in the worst case possible an alteration of the temporomandibular joint (TMJ).
Types of bridges
- Traditional bridge that leads each adjacent tooth to getting a crown. The part that connects these adjacent teeth and replaces the absent tooth is called a pontic.
- Maryland bridge, where the pontic is supported by metal bands on the adjacent teeth. This bridge is less solid that the traditional one.
Advantages of bridges
- Allows the replacement of an absent tooth in a fixed way that does not get removed each time in order to clean it. More esthetic that removable prosthetics (partials).
- Very durable. Allows restoring the adjacent teeth if they have big restorations.
Disadvantages of bridges
- More difficult to clean than an implant.
- Must alter the abutment teeth, therefore if these teeth are healthy and without restorations, it is recommended to consider an implant instead.
Maintenance of a bridge
It is important to keep the abutment teeth healthy by protecting them from cavities and gum disease. Brushing the teeth after each meal is recommended. In addition, a special kind of floss can be slid underneath the pontic to clean the space with the gum. A dental exam every six months is also recommended, allowing the dentist to verify the state if the abutment teeth.
Lifespan of a bridge
A bridge can last between five and twenty years, depending mainly on oral hygiene and maintenance, the material of the bridge (gold alloy versus porcelain), and also oral habits (grinding the teeth, chewing on ice or biting nails decrease the lifespan of a bridge).
Fixed Inlay/Onlay Bridge
The bridges with inlay/onlay have the advantage of being able to be installed using a minimally invasive technique. Compared to the method of preparation the bridges from 3 to 30% of the dental structure traditional sound is lost instead of 63 to 72%. For this reason, these restorations are an interesting choice for young people who have a healthy dentition. In addition, post-operative sensitivity due to the retention of enamel through the restoration is less common with the adhesive bridges. The most frequent causes of failure are peeling of restorations and the appearance of secondary caries.
Patient Selection
It is recommended to take care in the selection of patients in accordance with the following criteria:
- presence of vital support teeth;
- only of moderate size or restorations carious lesions which do not exceed the depth of preparation of the adhesive bridges are present;
- adequate oral hygiene;
- teeth in the final occlusion; absence of parafunctional (e.g. bruxism);
- absence of hyper mobility periodontal teeth support or variation of their mobility;
- absence of occlusal load high on the restoration.
Bridge with crown
A bridge allows replacing one or many absentteeth by attaching to adjacent teeth, one on each side (abutments). It is made of crowns soldered one to another. The bridge is fixed with cement and cannot be removed.
In addition to replacing the absent teeth, the abutment teeth are restored like crowns. A bridge is therefore recommended when the adjacent teeth have big fillings or root canals.
Why replace an absent tooth?
- To cover up an unaesthetic space.
- To improve chewing and talking.
- To avoid the rest of the teeth from taking the full load of chewing and in time making them weaker.
- To avoid the rest of the teeth from moving or leaning, thus creatinggum problems.
- An unbalanced chewing can lead to serious problems, in the worst case possible an alteration of the temporomandibular joint (TMJ).
Full Dental Crown
A dental crown is a restorative oral prosthesis, similar to a cap, and that is shaped and made to look like a real tooth. A crown is usually placed over a tooth that was damaged by either decay or by a fracture, to cover and protect it by reconstructing its shape, its exquisiteness, its size and its strength.
Once cemented, a dental crown completely covers the portion of the tooth which is above the gum. Porcelain is the material that is mainly used to make a crown because of its aesthetic qualities, with visual properties that are very similar to dental enamel. Therefore a crown looks like a real tooth in its shape and colour.
Reasons why crowns are necessary
A deteriorated tooth, which requires a dental crown, may be alive or devitalised by a root canal. If the tooth is alive, it would need a crown if it previously had a big cavity or a fracture that was maintained far enough from the pulp chamber (nerve). There are several reasons why a tooth would need a crown:
- To protect a weakened tooth (by tooth decay for example) against rupture, or to keep together a cracked tooth.
- To restore an already broken tooth or a severely worn out tooth.
- To restore a tooth that has had a root canal and a post.
- To cover and support a tooth that had a large filling when there isn't enough healthy tooth structure left to be restored by a new filling.
- To cover a tooth that is malformed or severely discoloured.
- To cover a dental implant.
Gold
A crown made of gold alloy is the one that lasts the longest. It resists very well to chewing forces, it rarely breaks, and it causes very little wear to opposing teeth. The gold's metallic colour is the main disadvantage of this type of crown and this factor reduces its popularity. However, gold would be a good choice for a molar that does not appear when a person smiles. Gold crowns are made in a laboratory with an impression that the dentist takes of the tooth; it is therefore necessary to protect the tooth with a temporary crown during this period of a few weeks.
Gold and Porcelain
A crown made of porcelain fused to gold is a more aesthetic crown than the one made of gold alloy. Porcelain can make a crown look very similar to a natural tooth. The gold part, which is located below the porcelain, helps give strength to the tooth. Porcelain is very strong, but is less strong than gold and can fracture. Sometimes the gold under the porcelain may show, especially at the gum level. This type of crown is also fabricated in the laboratory with an impression of the tooth, and a temporary crown is needed during that period of fabrication.
Porcelain
An all ceramic crown is the most aesthetic crown because it is made of porcelain only. Its shape and colour can match the qualities of natural teeth very closely. This crown is however less solid than gold crowns or porcelain fused to gold, although new varieties of porcelain which are more and more resistant are coming out on the market. Porcelain only crowns are recommended for anterior (front) teeth to favour beauty and offer a better looking smile. Porcelain crowns are generally fabricated in a dental laboratory.
Cerec
A CEREC crown is also made of porcelain only. This technology allows the dentist to engineer himself the crown following an electronic impression. The design and preparation are assisted by computer. The great advantage of CEREC is that a second appointment is not required to install the crown after its making in a dental laboratory since CEREC technology ensures the production of the crown in a few minutes by the dentist himself. But even though CEREC's porcelain is becoming more and more beautiful, dental laboratory's porcelains are still more aesthetic and resemble more the natural appearance of teeth.
A temporary or provisional crown is made by the dentist himself and has a lifespan of a few weeks. It is made of acrylic or stainless steel, and serves as a temporary restoration until the permanent crown is made by a dental laboratory. A temporary crown is not strong and can break easily.
Zirconia crowns
What zirconia and zirconia crown?
Zirconia oxide is - a combination with oxygen - the zirconium element. Zirconium is found in 40th place classification pérodique, it belongs to the group of metals. This material is very strong and solid; it is able to cut even steel.
Zirconia is a durable material, the flexural strength and stiffness are large, in practice, it is like porcelain. For these qualities, zirconia is treated under laboratory conditions by different methods. With this technology facrication its flexural strength is 10 times greater than traditional porcelain.
Because of its high rigidity, long the material was not used in dentistry, because we could not shape with typical and traditional methods (molding, filling, and pressing) that were on the market.
She has started to spread in the '90s when CAD CAM technologies have emerged. Treatment of zirconia is possible with these technologies. Zirconia crown - in fact, it is a zirconia framework is covered with porcelain
The process flow of preparing a zirconia ring
Zirconia crown requires the preparation of the tooth to the shoulders. It takes place under local anesthesia. Following the preparations, we take the perfect impression of your teeth. Preparations and decision footprint often take longer than if the preparation of a traditional crown without metal. But this "loss" of time will completely pay for itself because then you'll have a perfectly harmonized with your replacement teeth. It sends the impression to the laboratory where our prothésisites denaires realize the exact plaster model. They digitize the impression using a laser apparatus which detects the shape and they send the data to a central laboratory in Austria. By mail, refer to our central laboratory technician dental armature prepared and ready. In the laboratory, the zirconia framework, we apply traditional ceramics whose color matches your requirements. Layers are baked and finally polishing the crown. At the next appointment, the crown is fixed with dental cement.
During the preparation of the zirconia crown, is placed temporary crowns on your teeth polished, so you'll have no aesthetic disadvantage and your teeth will be protected against external effects (hot-cold, bacterial attack).
The advantages of zirconia crowns (zirconia)
It cannot be applied on a tooth that has been previously prepared by the technique of preparing the shoulders, and the protection of the gum is assured and should not be afraid of the regression gingival inflammation and its relation to the traditionally prepared teeth.
- The material is completely metal-free so we can prepare perfect aesthetic crowns that look like natural teeth
- The crowns are natural looking and they match perfectly with the natural teeth
- It does not irritate living tissue, it does not cause allergy, it is not toxic
- It does not conductelectricity
- They provide optimum protection against thermal sensitivity (cold and hot)
- It has a high strength so it can used for molars
- Resistance against the inflection is great
- Hardstock
- It is stronger than metals and at the same time she has a tooth color
- It integrates seamlessly with CAD CAM technology
- Preparations shoulders of the tooth is necessary, gingival inflammation and gingival regression can thus be avoided
- Thanks to its chassis resistant, it is suitable for the preparation of bridges
Disadvantages
- A higherprice
- The duration of the preparation is longer
- Under what circumstances is it recommended preparing a zirconia crown?
- For the restoration of natural tooth crown if it is broken as a result of an accident
- For changing the old crowns whose edges are gray and close properly
- For aesthetic reconstruction of severely discolored teeth front
- For the treatment of several front teeth decayed or sealed
- To put on a tooth replacement implant as
- If requirements for a perfectly aesthetic
© 2024 Edmundston Denteal Clinic All rights reserved.
Produced by 
T-Nours Communications