Crowns and Inlays (Dental Restorations): Guide to Materials, Root Canal Needs and Replacement Timing
An analysis of 8,697 patient comments on Korean YouTube dental content about Prosthetics: Crowns found that questions about Material choice (gold, zirconia, ceramic) were the most common (1,076). Crowns cover the whole tooth; inlays restore part of it. This guide covers gold, zirconia and ceramic choices, when a root canal is needed, sensitivity after placement and replacement timing. SOURCE Analysis of patient comments on YouTube dental content (DentStat) · public sources listed under References · Data as of June 28, 2026
Key facts
| Crown vs. inlay | A crown covers the entire tooth; inlays and onlays restore only part of it [1] |
|---|---|
| Material types | Gold, zirconia, ceramic and others, chosen by tooth location, bite force and habits [1] |
| Link to root canal treatment | If the nerve is not infected or exposed, a crown may be possible without a root canal [1] |
| National Health Insurance | Most prosthetic restorations such as crowns and inlays are non-covered [2] |
| Most-asked patient theme | Material choice (1,076 of 3,416 question comments) [4] |
Cost statistics (non-covered, official HIRA data)
HIRA non-covered treatment fee statistics. National figures are for dental clinics · as of July 6, 2026.
| Item | Basis | Min | Median | Average | Max |
|---|---|---|---|---|---|
| Crown (all-ceramic) | Official, dental clinics | 200,000 KRW | 600,000 KRW | 576,934 KRW | 3,000,000 KRW |
| Crown (gold) | Official, dental clinics | 250,000 KRW | 600,000 KRW | 638,433 KRW | 4,000,000 KRW |
| Crown (zirconia) | Official, dental clinics | 150,000 KRW | 500,000 KRW | 510,935 KRW | 4,000,000 KRW |
| Crown (PFM) | Official, dental clinics | 45,000 KRW | 400,000 KRW | 415,520 KRW | 1,200,000 KRW |
| Crown (metal) | Official, dental clinics | 100,000 KRW | 300,000 KRW | 324,361 KRW | 800,000 KRW |
Crown (all-ceramic): by province
| Province | Basis | Min | Median | Average | Max |
|---|---|---|---|---|---|
| Seoul | Official, regional | 250,000 KRW | 600,000 KRW | 614,558 KRW | 3,000,000 KRW |
| Busan | Official, regional | 400,000 KRW | 550,000 KRW | 563,608 KRW | 1,200,000 KRW |
| Incheon | Official, regional | 320,000 KRW | 600,000 KRW | 578,772 KRW | 1,280,000 KRW |
| Daegu | Official, regional | 300,000 KRW | 550,000 KRW | 558,930 KRW | 950,000 KRW |
| Gwangju | Official, regional | 400,000 KRW | 550,000 KRW | 558,912 KRW | 800,000 KRW |
| Daejeon | Official, regional | 220,000 KRW | 550,000 KRW | 559,388 KRW | 800,000 KRW |
| Ulsan | Official, regional | 400,000 KRW | 600,000 KRW | 565,728 KRW | 775,600 KRW |
| Gyeonggi | Official, regional | 200,000 KRW | 600,000 KRW | 577,325 KRW | 1,100,000 KRW |
| Gangwon | Official, regional | 450,000 KRW | 550,000 KRW | 571,845 KRW | 900,000 KRW |
| Chungbuk | Official, regional | 400,000 KRW | 600,000 KRW | 576,234 KRW | 900,000 KRW |
| Chungnam | Official, regional | 400,000 KRW | 600,000 KRW | 575,729 KRW | 884,000 KRW |
| Jeonbuk | Official, regional | 360,000 KRW | 550,000 KRW | 545,514 KRW | 800,000 KRW |
| Jeonnam | Official, regional | 350,000 KRW | 550,000 KRW | 553,421 KRW | 800,000 KRW |
| Gyeongbuk | Official, regional | 400,000 KRW | 550,000 KRW | 540,892 KRW | 700,000 KRW |
| Gyeongnam | Official, regional | 400,000 KRW | 550,000 KRW | 553,465 KRW | 1,500,000 KRW |
| Jeju | Official, regional | 450,000 KRW | 600,000 KRW | 579,218 KRW | 700,000 KRW |
| Sejong | Official, regional | 400,000 KRW | 550,000 KRW | 561,505 KRW | 790,000 KRW |
These figures aggregate HIRA’s public non-covered fee data and are not the price of any particular clinic. "Official" values are statistics published by HIRA (sample size not disclosed); "N dental hospitals" is our own aggregation of the institutions’ reported data (groups with fewer than 5 are not shown). Actual costs depend on the patient’s condition and the scope of treatment. Source: HIRA non-covered treatment fee information (KOGL Type 1). Amounts are in Korean won (KRW).
What do patients ask about most?
Analysis of 8,697 patient question comments on YouTube content about Prosthetics: Crowns (collected June 28, 2026).
What are crowns and inlays?
A prosthetic restoration is a treatment that rebuilds a tooth damaged by decay, fracture or root canal treatment using artificial materials [1]. Inlays and onlays fill only the damaged area from an impression, while a crown covers the whole tooth to restore its shape and chewing function [1]. The smaller the damage, the more likely an option that removes less tooth structure is considered [1].
When DentStat analyzed 8,697 patient comments on prosthetics and crowns from YouTube dental content (3,416 of them questions), the most common topics were material choice (1,076), sensitivity and pain after restoration (803), and whether the tooth could be saved with an inlay or resin (755) [4].
How is the material chosen?
Crown materials include gold, zirconia and ceramic, each with different strength, appearance and effect on the opposing tooth [1]. Whether the tooth is a molar that takes heavy chewing force, a front tooth where appearance matters, or whether you grind your teeth all inform the choice [1]. Material choice was the most-asked theme in the comment analysis (1,076), with gold vs. zirconia questions standing out [4].
Most prosthetic restorations such as crowns and inlays are non-covered (not paid by Korea’s National Health Insurance), so costs vary by clinic. This guide does not cover individual clinic prices [2].
Do I need a root canal to get a crown?
Crowns and root canals do not always go together. A root canal is needed when the nerve (pulp) is infected or exposed, and a tooth with a healthy nerve sometimes gets a crown without one [1]. Whether it is needed is judged from X-rays and symptoms (spontaneous pain, reaction to temperature and so on) [1]. There were 684 questions about whether a root canal was needed, many asking “why do I need a root canal when it doesn’t hurt?” [4].
Why does sensitivity or pain happen after a crown?
For teeth whose nerve was kept, temporary sensitivity right after the restoration that settles down over time is not unusual [1]. When one spot hits first and feels uncomfortable while chewing, a bite adjustment may fix it [1]. However, pain that keeps getting worse or throbbing without any trigger is a sign that the nerve needs to be checked, and you should be seen [1]. Sensitivity and pain after restoration was the second most-asked theme, with 803 questions [4].
When should a crown be replaced?
Crowns do not have a fixed, uniform replacement cycle [1]. Some are used for a long time when there are no symptoms, the edge (margin) still fits well and there is no secondary decay inside. On the other hand, replacement is considered if a margin gap, decay underneath or a fracture is found [1]. Because the tooth under a crown cannot be seen from outside, regular checkups and X-rays are how it is checked [1].
For a missing tooth, should I consider a bridge or an implant?
A bridge trims down the teeth on both sides of the gap and attaches a connected restoration, while an implant places an artificial root into the gap [1]. If the neighboring teeth already need crowns, a bridge may be considered; if they are healthy, an implant that avoids trimming them may be considered. The options also depend on the jawbone and general health [1]. There were 262 questions comparing bridges and implants [4]. Implants are covered in more detail in the implant guide.
You can see the regional distribution of dental clinics with board-certified specialists in Prosthodontics on DentStat’s region pages, based on public data from the Health Insurance Review & Assessment Service (HIRA) [3].
In-depth guides
Documents covering subtopics of Prosthetics: Crowns in more depth.
- Sensitivity and pain: Normal Adjustment vs. Signs You Need to Go Back
- Material choice: Gold, Zirconia, Ceramic and PFM Compared, and How Tooth Location Shapes the Choice
- Inlay, resin or crown: Choosing by Extent of Damage, Tooth Removal and Why Diagnoses Differ
- Distrust of overtreatment: How to Check Conflicting Diagnoses, Decay Between Teeth and Quote Differences
- Whether a root canal is needed: Do You Need a Root Canal Before a Crown? When It Is Needed Without Pain and When the Nerve Is Kept
- Replacement timing: Fixed Lifespan, Dark Lines at the Gum and Whether It Must Be Removed to Check
- Decay under crowns and bite care: Self-Check Signs Such as Dark Lines, Trapped Food and Odor
- Bridge vs. implant: Trimming Neighboring Teeth, Load on Abutments and the Risk of Waiting
- Temporary crowns: What to Do If One Falls Out, Is Swallowed or Feels Sensitive, and How to Care for It
Frequently asked questions
- Should a molar crown be gold or zirconia?
- There is no single right answer. The pros and cons of each material depend on whether the tooth takes heavy chewing force, whether you grind your teeth, and whether appearance matters at that spot, so the decision is made with your dentist based on a diagnosis of your own bite.
- Do I have to get a root canal before a crown?
- No. A root canal is needed when the nerve (pulp) is infected or exposed. If the nerve is healthy, a crown is sometimes made without a root canal. Whether one is needed is judged from X-rays and symptoms.
- My crown feels sensitive and uncomfortable. Did it fail?
- For teeth whose nerve was kept, temporary sensitivity right after the restoration that settles down over time is not unusual. If one spot seems to hit first when you bite, a bite adjustment may fix it. If the pain gets worse or lasts a long time, though, you should be seen.
- How often should a crown be replaced?
- There is no fixed replacement cycle. Some crowns are used for a long time when there are no symptoms, no decay underneath and no gap at the edge (margin). Whether to replace one is judged from the condition found at regular checkups.
- Can decay form under a crown?
- The crown itself cannot decay, but if bacteria get in through a gap between the crown and the tooth, secondary decay can form in the tooth underneath. Food getting stuck often or a bad smell can be warning signs, so the margin is checked at regular checkups.
- For a missing tooth, should I get a bridge or an implant?
- A bridge connects to the neighboring teeth after they are trimmed down, while an implant places an artificial root in the gap itself. The options depend on the condition of the neighboring teeth, the jawbone and your general health, so the choice is made in consultation based on test results.
Find a dental clinic
Compare dental clinics by area and treatment in the area shortlists, or see nationwide figures in dental clinic statistics for South Korea.
Related topics
Root Canal TreatmentDental implantsCavitiesDentures
References
- National Health Information Portal: Oral Diseases and Tooth Restoration · Korea Disease Control and Prevention Agency (KDCA)
- National Health Insurance Coverage Criteria for Dental Prosthetics · Ministry of Health and Welfare · National Health Insurance Service (NHIS)
- Hospital Information Service Public Data · Health Insurance Review & Assessment Service (HIRA)
- Analysis of Patient Comments on YouTube Dental Content: 8,697 Comments on Prosthetics and Crowns (Collected 2026-06-28) · DentStat (Osamil Inc.)
This content is general information based on public sources and does not replace diagnosis, prescription or treatment for any individual. If you have symptoms, consult a dentist.