What Is a Porcelain Crown
and When Do I Need One?

What a crown actually is

A porcelain crown is a custom-made ceramic cap that covers the entire visible portion of a tooth above the gumline. It sits over the prepared tooth like a thimble over a finger. The underlying tooth is shaped down by 1 to 2 millimetres on all sides to create space for the crown. The crown then becomes the visible chewing and biting surface. From the outside the tooth looks completely normal; structurally, the crown is doing the work the original tooth used to do.

The key distinction from other restorations: a crown is the only option that provides 360-degree structural coverage. A filling repairs damage from the inside. A veneer covers only the front face of a tooth. A crown wraps the entire tooth, which is why it is the appropriate solution when a significant portion of the original structure is gone.

When you need a crown (and when you do not)

The clinical threshold is straightforward: when more than 50 percent of the tooth structure has been lost or weakened, a filling will not hold under chewing force. The tooth will eventually fracture. A crown is necessary to prevent that outcome.

The root canal situation is worth expanding. When a root canal is performed on a molar or premolar, the tooth becomes brittle because the nerve and blood supply have been removed. These back teeth handle significant chewing forces. Without a crown, a root-canal-treated molar has a high probability of fracturing, often catastrophically, within a few years. A crown after root canal on any back tooth is not optional, it is a required step to protect the investment you made in saving the tooth.

The four crown materials at Picasso

Four material categories cover the range from budget-practical to premium-aesthetic. The choice is made at consultation based on tooth position, bite force, your aesthetic priorities, and budget.

• PFM (Porcelain fused to Titanium): 5,000,000 VND A metal substructure (titanium) with porcelain layered on top. Strong and durable for posterior teeth. Can show a thin grey line at the gumline over time as gums recede slightly. Best for back teeth where aesthetics are secondary to strength. Lifespan 10 to 15 years.
• Zirconia (full ceramic): 7,000,000 VND The most commonly chosen material at Picasso for molars and premolars. Full ceramic with no metal, strong enough for high-force posterior positions, good aesthetics. The best balance of strength, aesthetics, and cost. Lifespan 12 to 20 years.
• Emax (lithium disilicate): 9,000,000 VND Glass-ceramic with exceptional translucency that mimics natural tooth enamel. Best for front teeth where the crown must blend invisibly with surrounding teeth. Not recommended for high-force back positions. Lifespan 10 to 15 years on front teeth.
• Lava: 11,000,000 VND Premium full-ceramic with the most natural optical properties. The top choice for highly visible front teeth where the patient prioritises the most natural-looking result. Combines strength with the best aesthetics in the range. Lifespan 15 to 25 years.

For international patients: the same crown in Australia costs AUD $1,200 to $2,500 depending on material. At Picasso, the same materials cost AUD $200 to $440 equivalent. The savings are structural (lower operating costs in Vietnam) not quality-related. See the full comparison on the dental crowns service page.

The two-visit placement process

Crown placement follows a consistent two-visit sequence separated by 1 to 2 weeks while the permanent crown is fabricated in the dental laboratory. For international patients, both visits fit comfortably within a 10 to 14 day trip.

Visit 1: preparation and impression (approximately 60 minutes)

The tooth is numbed with local anaesthetic. 1 to 2 millimetres of tooth structure is gently reshaped around all sides to create space for the crown. A detailed impression or digital scan is taken. Shade matching is done against the surrounding teeth. A temporary crown is fitted to protect the prepared tooth while the permanent crown is made. You leave with a fully functional temporary and resume normal activities the same day.

Visit 2: try-in and cementation (approximately 30 minutes)

The temporary crown is removed. The permanent crown is tried in to confirm fit, colour, and bite. Small adjustments are made if needed. Once both dentist and patient are satisfied, the crown is cemented permanently with high-strength dental cement. You can eat normally on the crown within 30 to 60 minutes after the cement sets.

How to make your crown last its full lifespan

Crown longevity is almost entirely within the patient's control after placement. The crown itself cannot decay. What can fail is the natural tooth structure underneath, the cement seal at the margin, or the crown can crack under excessive force.

• Floss daily at the crown margin The natural tooth beneath the crown can develop decay where the crown meets the tooth at the gumline. Daily flossing at that exact point is the single most important maintenance habit for any crowned tooth.
• Brush with a soft brush and fluoride toothpaste Twice daily, two minutes each time. Soft bristles protect the gum tissue at the crown margin. Fluoride strengthens the surrounding enamel adjacent to the crown edge.
• Avoid hard objects on crowned teeth Ice, hard candy, popcorn kernels, opening packages. Modern porcelain is strong but concentrated impact force can chip any ceramic. Hard foods (nuts, apples) eaten with controlled biting force are fine; brittle objects bitten forcefully are not.
• Wear a night guard if you grind Bruxism is the most common cause of premature crown failure. A custom night guard (2.5 to 3.5 million VND at Picasso) extends the life of every crown in your mouth. The cost of one avoided replacement pays for many years of night guards.
• Attend 6-monthly recall appointments At the recall, we check the crown margin for any gap or early sign of decay on the underlying tooth, and the chewing surface for wear. Catching marginal issues at 6 months takes 5 minutes to resolve. Catching them at 5 years means a full crown replacement.