Dental crowns and what are onlays and 3/4 crowns?

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What are dental crowns? Do you really need them? Your teeth have most likely deteriorated over time. Cavities, traumas, and other factors can all lead to tooth destruction. Your teeth may gradually lose their structure and function.

What are dental crowns?

Dental crowns, often known as porcelain crowns, are a coat that covers the visible area of the tooth. The form of each crown is determined by the original tooth. The benefit of porcelain crowns over metal-based crowns is an aesthetic component, since the replacement appears like the original, which is significant if you obtain the crown for your front teeth.

Dental crowns
Dental crowns

Why are dental crowns needed?

You may want to consider a porcelain crown if you:

  • Have you recently had a dental injury? Would you want to prevent a weak tooth from fracture or fix a cracked, worn-out tooth?
  • An anchor is required for a dental bridge to keep it in place.
  • Want to reshape a crooked tooth, to enhance your smile
  • To cover and support the teeth by replacing a filling that has gone loose or dropped out.
  • Have been treated with a root canal treatment.

Porcelain crowns’ role is to protect the tooth while also enhancing the strength and durability of an existing tooth.


See more: Porcelain veneers 


What is the process of porcelain crown treatment?

Porcelain crown treatment often requires two appointments. Because your tooth has been prepped for the porcelain crown. The dentist will take X-rays of the tooth and the bone around it during the initial appointment. If there are any following problems, you may require root canal treatment:

  • Tooth decay.
  • Risk of infection.
  • Injury to the tooth’s pulp.

The dentist will next locate and remove any vulnerable areas of the tooth to give space for a temporary crown. If your tooth has lost too much of its structure, a filling can be utilized to expand your tooth before the crown covers it.

After the natural tooth is ready, a paste or putty is used to make a copy of the tooth. The copies will also be made for the teeth above and below the tooth that’s getting the dental crown. The involved impressions are to ensure that the crown will not interfere with your eating.

The impressions will be delivered to a laboratory. The crowns will be made in a laboratory, which usually takes 2 to 3 weeks. While you wait for the permanent crown, your prepped tooth will be repaired with a temporary crown before your next appointment.

The second appointment is generally within the following two weeks, during which your temporary crown will be removed and the permanent crown will be examined. If everything is in order, the gum tissue behind your teeth will be numbed and the new crown will be placed.

Dental crown treatment in one day. If your dentist has the required equipment, dental crowns can also be manufactured in the office. This operation is carried out in the same manner as the conventional method, beginning with the removal of decay and contouring of the tooth to guarantee a complete fit inside the crown.

Because permanent crowns are manufactured in a single day, the next stage is different from the previous technique. Scanning equipment (sometimes known as a “wand”) is used to obtain digital images of the tooth inside your mouth. These photos are analyzed by computer software, which creates a 3D model of the tooth. The computerized design is then sent to a second in-house machine, which cuts a ceramic block into the shape of the crown. This technique is known as computer-aided or computer-aided manufacturing (CAD/CAM). The crown is ready to be cemented into place in about 15 minutes.

What are dental crowns made of?

Permanent crowns can be made out of many different materials. These materials can include:

  • Gold, palladium, nickel, and chromium are all metals that may be used to make dental crowns. Metal crowns are the least prone to break or shatter, wear down slowest, and require just a small amount of your tooth to be removed. The biggest disadvantage of this sort of crown is its shiny tint. The most significant drawback of this type of crown is its metal crowns. Metal crowns are an excellent choice for concealed molars.
  • Porcelain-fused-to-metal: This type of dental crown may be customized to match the color of the natural teeth next to the crown. They have a natural appearance. However, a black line can occasionally be visible as the metal beneath the porcelain crown top. Other disadvantages include the possibility of the porcelain portion of the crown shattering or breaking off, as well as the crown wearing down the teeth next to it in the mouth. Porcelain bonded to metal dental crowns may be a viable alternative for front or back teeth.
  • All-resin: Resin-based dental crowns are frequently less expensive than other crown kinds. Although they wear down over time, they are more prone to cracking than porcelain-fused-to-metal crowns.
  • All-ceramic or all-porcelain: When compared to other crown varieties, these dental crowns provide the closest match to natural skin tone. They are also a good option if you are allergic to metal. They are not as strong as porcelain-fused-to-metal crowns. Furthermore, unlike metal or resin crowns, they have the potential to harm the teeth next to them. Front teeth are ideal candidates for all-ceramic crowns.
  • Pressed ceramic: There is a firm inner core in these dental crowns. Pressed ceramic dental crowns to replace the metal liner that’s used in the all-ceramic crown-making process. Porcelain is used to cap pressed ceramic crowns because it offers the closest natural color match. They are more long-lasting than an all-porcelain crown…
Types of dental crowns
Types of dental crowns

Comparison: Metal vs porcelain crowns

Cobalt-chromium, nickel-chromium, and other metal-based alloys are commonly used to make metal crowns. Metal crowns are well-known for their durability and have long been utilized in dentistry. When compared to porcelain crowns, they are the least likely to wear down, chip, or break. Because metal crowns are hidden, the majority of patients choose to have them placed on their rear teeth (posterior teeth).

Porcelain crowns are created to look like your natural teeth and are available in two varieties: all-porcelain and all-ceramic. Both are suitable for persons who are allergic to metals and may be used on both front and back teeth.

What are onlays and 3/4 crowns?

On your teeth, you can use a range of crown types. Onlays and 3/4 crowns do not entirely cover your teeth like normal dental crowns do. A standard crown will completely cover your tooth. Onlays and 3/4 crowns may be acceptable if you still have healthy tooth structure. It is considered a more conservative approach when compared to complete crown coverage. During this process, your dentist reshapes the tooth to prepare it for the crown.

Onlays crowns
Onlays crowns

Should I get an implant or a crown?

This is determined by the state of your teeth and the advice of your dentist. A dental implant is a man-made or prosthetic root that performs the same function as a natural tooth root. The implant is placed in your bone, where the root would be, and is utilized in conjunction with your jawbone to give a long-lasting and solid fit. Your implant is essentially the foundation for your dental crown. They collaborate to replicate the structure and look of a real tooth. A crown can replace a portion of a fractured tooth, but it cannot completely repair a tooth without the use of an implant.

Below are some before and after pictures of porcelain crown procedures. 

11d06e9401cfda9183deOur Clients

What problems can develop with a dental crown?

There are several issues that you might experience over time with your crown, including:

  • Discomfort or sensitivity: As the anesthetic takes off, a newly-crowned tooth may experience discomfort straight away. If the crowned tooth still has a nerve within, you may have some heat and cold sensitivity. Your dentist may suggest you use sensitive tooth toothpaste. When you bite down, you may experience pain, indicating that the crown is likely too high on the tooth. Call your dentist if this is the case. This is an easy problem to tackle.
  • Chipped crown: All porcelain crowns can sometimes chip. After small chips are repaired, the crown can be maintained in your mouth. If the chip is significant or many, the dental crown may need to be replaced.
  • Loose crown: The cement that holds the crown in place can sometimes be removed from beneath the crown. This not only causes the crown to come loose, but it also allows bacteria to enter and damage the remaining tooth. Contact your dentist if your crown seems loose.
  • Crown falls off: A dental crown can fall off. When this happens, it’s usually due to a faulty fit or a lack of cement. If this happens to you, contact your dentist’s office immediately. Your dentist will provide you with specific instructions on how to care for your tooth and crown before you can schedule a visit. The dentist may re-cement your crown in place. If the crown cannot be adjusted, it must be replaced.
  • Allergic reaction: Dental crowns are frequently composed of metals. An allergic reaction to the metal or porcelain used in the dental crown is possible. This is, however, extremely rare.
  • Dark line on crowned tooth next to the gum line: A black line may appear near the gum line of your crowned teeth. This is typical, especially if you have a porcelain-fused-to-metal crown. The metal of the crown is actually visible through this black line.


What are PFM crowns?

PFM crowns stand for “porcelain-fused-to-metal”, and combine the benefits of metal crowns (durability) with the advantages of porcelain crowns (aesthetic). 

PFM crowns
PFM crowns

Is a porcelain crown treatment safe?

The process of building porcelain crowns is safe, and all of the components have FDA approval. Although there are still dangers and difficulties throughout the treatment, our highly skilled specialists have a significant amount of experience to deal with any unexpected problems.

Will my dental insurance cover porcelain crown treatment?

it actually relies on what is covered by your dental insurance, as all dental plans and insurance policies are different. However, depending on the type, you may acquire a warranty automobile from BeDental that ranges in value from 7 to 30 years. In particular, you get a real 10-year warranty on Cercon HT porcelain teeth. Additionally, you have the option to select your installment plan using a credit card from one of the many institutions, including Vietcombank, Sacombank, VPBank, and HSBC,… The installation procedure is quick and easy.

How long do dental crowns last?

The usual lifetime of dental crowns is five to fifteen years. How much “water and tear” the crown experiences, how frequently you practice good oral hygiene, and your mouth-related behaviors can all have an impact on how long it lasts. These practices consist of:

  • Grinding or clenching your teeth.
  • Chewing ice.
  • Biting your fingernails.
  • Open the packaging with your teeth.

See more: How to Handle 3 Types Of Dental Emergencies While Working Abroad

How much do porcelain crowns cost?

Each treatment’s price is entirely determined by your dental health and your demands. You may choose the size and shape of the crown you want, for example, in some cases, you need more than a porcelain crown. 

For instance, gold crowns are often more expensive than porcelain-fused-to-metal crowns, whereas porcelain crowns are more expensive than gold crowns. The normal price range for dental crowns is 5.500.000 to 16.000.000 VND or higher. The cost of crowns is typically not entirely covered by insurance. To be certain, check with your personal dental insurance company.

Are there any common problems that come from porcelain crowns?

In any situation, porcelain crowns can endure between 5 and 20 years. It is important to keep in mind that they are not as durable as metal or PFM crowns, therefore you must protect your dental crown. Simple dental hygiene practices are all that are required to take care of your porcelain crown.

Porcelain crowns are designed to last anywhere from 5 to 20 years. However, they are not as durable as metal or PFM crowns, so it’s important to ensure you take care of your dental crown. Following a simple dental hygiene routine is all required when taking care of your porcelain crown. This includes flossing, brushing, and staying away from sweetened foods and beverages. 

Does a crowned tooth require any special care?

The underlying tooth must be protected from decay or gingivitis, though. It would help if you thus exercised proper dental hygiene daily. These routines include flossing once per day, rinsing after meals, and cleaning your teeth twice per day. Eat less food that is cold or hard to avoid damaging the porcelain crown.


Below is an article that Lang moi shares for you, if you have any questions that need to be answered, don’t hesitate to contact us!

See more: Scaling and Polishing – 6 common questions about them

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