Information on all-ceramic crowns (dental crowns)
An all-ceramic crown is a restoration that covers the entire tooth. Common materials include all-ceramic (e.g., zirconia) and porcelain-fused-to-metal. It is used to protect a tooth after root canal treatment, restore severe damage, or improve appearance. This is a medical procedure that must be diagnosed and performed by a qualified dentist. The following is neutral information, not medical advice.
General fabrication process of dental crowns
Dental crowns usually require two or more visits. The common process is as follows, but actual procedures depend on the individual case and clinic:
- Evaluation and tooth preparation: A certain amount of tooth structure is ground down to accommodate the crown; if necessary, a core buildup is performed first.
- Impression or scanning: An impression or intraoral scan is taken to capture the tooth shape, which is sent to a dental laboratory for fabrication.
- Temporary crown: A temporary crown is placed to protect the tooth during fabrication.
- Try-in and cementation: After verifying fit, occlusion, and color, the crown is cemented with adhesive.
Differences between crowns, inlays/onlays, and veneers
All are used to restore teeth, but they differ in coverage and amount of tooth reduction: a crown covers the entire tooth and requires more reduction, often used for large defects or after root canal treatment; an inlay/onlay repairs a partial defect while preserving more tooth structure; a ceramic veneer only covers the front surface of the tooth and is mainly used for aesthetic improvement. The choice depends on the extent of damage, occlusion, and periodontal condition, as assessed by the dentist.
Frequently Asked Questions
What is an all-ceramic crown? When is it needed?
An all-ceramic crown is a restoration that covers the entire tooth. Common indications include protecting a tooth after root canal treatment, restoring severe damage or wear, and improving appearance. Whether it is needed should be assessed by a dentist based on individual tooth condition. Not medical advice.
What is the difference between an all-ceramic crown and a ceramic veneer?
An all-ceramic crown covers the entire tooth and requires more tooth reduction; a ceramic veneer only covers the front surface of the tooth and requires less reduction. Their indications differ and should be evaluated by a dentist based on tooth condition.
What materials are used for all-ceramic crowns?
Common materials include all-ceramic (e.g., zirconia, feldspathic porcelain) and porcelain-fused-to-metal. They differ in strength, aesthetics, and cost. The choice should be discussed with a dentist based on individual tooth position and condition.
How are all-ceramic crown costs calculated?
Usually charged per tooth, influenced by material (all-ceramic vs. PFM), fabrication method, and tooth position. All-ceramic crowns are self-paid and not covered by NHI. Actual costs depend on the clinic's written quote.
Does National Health Insurance cover all-ceramic crowns?
All-ceramic crowns and general adult permanent tooth crowns are mostly self-paid and not covered by NHI. NHI coverage for crowns is mainly for specific situations (e.g., stainless steel crowns for children after root canal treatment). Adult all-ceramic and PFM crowns are self-paid. Actual coverage depends on NHIA regulations and clinic explanation.
Is tooth reduction necessary for a crown?
Yes, a certain amount of tooth structure must be removed to accommodate the crown. The amount of reduction depends on the tooth's condition and crown design. Suitability and extent of reduction are assessed by the dentist on an individual basis.
How long do all-ceramic crowns typically last?
Longevity varies greatly depending on material, oral hygiene, biting habits, and regular check-ups. Regular visits help detect problems early. This site only compiles public information, not medical advice.
After getting a dental crown, can the tooth inside still get cavities?
This is a common and important misconception. A crown is a restoration placed over a natural tooth (or implant). If the underlying tooth is natural, the junction between the tooth and crown (crown margin) can still develop cavities due to plaque buildup, especially with poor cleaning or gum recession exposing the root. The crown itself (ceramic or metal) does not decay, but it does not make the natural tooth immune to cavities. Therefore, after getting a crown, regular brushing, flossing around the crown margin, and periodic check-ups are still necessary. Actual conditions should be evaluated by a dentist. This site only compiles public information and is not medical advice.
Official sources：中央健康保險署、食品藥物管理署、衛生福利部
This page is a neutral information compilation for reference only, not medical advice, and does not constitute any treatment commitment.