Dental crowns and bridges guide

18 March 2026·6 min read

# Dental Crowns and Bridges Guide

What Are Dental Crowns?

A dental crown is a tooth-shaped cap that covers a damaged or weakened tooth. It restores the tooth's size, strength, and appearance. Think of it as a protective shell that sits over what remains of your natural tooth (the root and core stay in place).

Crowns are permanent restorations, though they may need replacement after 10-15 years depending on materials and care.

What Are Dental Bridges?

A dental bridge literally bridges the gap left by one or more missing teeth. It consists of two crowns (called abutments) placed on healthy teeth on either side of the gap, with false teeth (called pontics) suspended between them.

Bridges restore your ability to chew and speak, prevent remaining teeth from shifting, and maintain your facial structure.

When You Need a Crown

You're a good candidate for a crown if you have:

  • Severe decay — when a cavity is too large for a filling
  • Broken or cracked teeth — especially if damage extends below the gum line
  • Root canal treatment — teeth that have had root canals need crowns for protection
  • Weak teeth — teeth weakened by large fillings or injury
  • Cosmetic concerns — discolored or misshapen teeth
  • Tooth wear — from grinding or acid erosion
  • Failed fillings — when old fillings leak or break repeatedly

When You Need a Bridge

Consider a bridge when you have:

  • One or more missing teeth in a row
  • Healthy teeth on both sides of the gap (to anchor the bridge)
  • Adequate bone support in the jaw
  • Good oral hygiene habits — bridges require excellent care
  • Concern about shifting teeth — bridges prevent adjacent teeth from moving

Important: Bridges require healthy anchor teeth. If those teeth aren't strong enough, you may need implants instead.

Crown and Bridge Materials

Porcelain

  • Most natural appearance
  • Matches tooth color well
  • Biocompatible (gum-friendly)
  • Good for front teeth
  • More fragile than other options
  • Can chip or crack
  • May wear down opposing natural teeth
  • Generally more expensive

Best for: Front teeth where appearance matters most

Porcelain-Fused-to-Metal (PFM)

  • Strong metal base with natural-looking porcelain exterior
  • Good durability
  • Moderately priced
  • Works for front and back teeth
  • Metal base can show as a dark line at the gum over time
  • Porcelain may chip
  • Visible metal if gum recedes

Best for: Back molars or if you're budget-conscious

Full Metal (Gold or Titanium)

  • Extremely durable (can last 20+ years)
  • Biocompatible and gentle on opposing teeth
  • Minimal tooth removal needed
  • Least likely to cause damage to adjacent teeth
  • Obvious metal color (unacceptable cosmetically for most people)
  • High cost
  • Requires significant tooth removal

Best for: Back molars when durability matters more than appearance

Zirconia

  • Very strong and durable
  • White color (no metal showing)
  • Biocompatible
  • Minimal wear on opposing teeth
  • Long lifespan (15+ years)
  • Newer material with less long-term data
  • Can be expensive
  • Difficult for dentists to adjust after placement
  • May appear slightly less natural than porcelain

Best for: Patients wanting durability with natural appearance

The Crown Procedure

Most crowns require two appointments:

Appointment 1: Preparation 1. Local anesthetic numbs the tooth 2. Dentist removes damaged portions and decay 3. Tooth is shaped to accommodate the crown 4. Impression (mold or digital scan) is taken 5. Temporary crown is placed 6. You wait 2-4 weeks for the permanent crown

Appointment 2: Placement 1. Temporary crown is removed 2. Permanent crown is checked for fit and bite 3. Adjustments are made if needed 4. Crown is cemented permanently into place

Some dentists use same-day crown technology (CAD/CAM), eliminating the need for a temporary crown.

The Bridge Procedure

Bridge placement typically takes two appointments:

  1. Preparation visit: The two anchor teeth are shaped and prepared like crown teeth. Impressions are taken. A temporary bridge is placed.
  2. Placement visit (2-4 weeks later): The permanent bridge is cemented in place after checking fit and bite.

Cost Considerations

Typical costs (varies by location and dentist):

  • Single crown: $800–$2,500
  • Dental bridge: $1,500–$5,000+ (depends on number of teeth being replaced)
  • Material variations: Porcelain and zirconia cost more than metal-based options

Insurance typically covers 50% of restorative work like crowns and bridges, but coverage limits apply. Cosmetic crowns may not be covered.

Lifespan and Durability

  • Porcelain: 8-12 years
  • Porcelain-fused-to-metal: 10-15 years
  • Full metal: 15-20+ years
  • Zirconia: 15+ years

Lifespan depends on material, your oral hygiene, bite force, and habits (grinding, chewing hard objects).

Care and Maintenance

Daily Care - Brush twice daily with a soft-bristled toothbrush - Floss daily (use special floss threaders for bridges) - Use water flossers for bridges if traditional floss is difficult - Avoid abrasive whitening toothpastes

Habits to Avoid - Don't chew on ice, hard candy, or nuts - Avoid grinding your teeth (ask your dentist about a nightguard) - Don't use teeth as tools - Minimize sticky foods that can pull off crowns

Professional Care - See your dentist every six months - Address decay in surrounding teeth immediately - Report any looseness, pain, or discomfort

Alternatives to Consider

For Single Teeth - **Dental implant:** A surgically placed artificial tooth root with a crown. More expensive but doesn't require shaping healthy neighboring teeth. Lasts longest (20+ years). - **Large filling:** Only viable if damage is minor - **Bonded resin:** Less expensive than crowns but less durable (5-7 years)

For Missing Teeth - **Dental implant:** Higher cost but best longevity and doesn't affect adjacent teeth - **Removable partial denture:** Much less expensive but less stable and requires daily removal - **Tooth implant with individual crown:** More expensive than bridges but preserves adjacent teeth

Common Questions

Q: Will a crown hurt? A: The procedure is painless due to anesthesia. Some sensitivity may occur for a few weeks after placement, typically resolving on its own.

Q: Can I get a crown if I have a cavity under my old crown? A: Yes. The dentist will remove the old crown, treat the cavity, and place a new crown.

Q: How long does the crown procedure take? A: Each appointment typically takes 1-2 hours.

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FAQ_JSON: [{"question":"How long do dental crowns last?","answer":"Most crowns last 10-15 years, though full metal crowns can last 20+ years. Lifespan depends on material, oral hygiene, and your bite force. Regular dental visits and avoiding hard chewing habits extends crown life significantly."},{"question":"Is it normal for a crown to feel loose after placement?","answer":"Some mild sensitivity is normal for a few weeks. However, actual looseness is not normal and should be reported immediately to your dentist. A loose crown can allow bacteria underneath, causing decay and infection."},{"question":"Can I eat normally with a bridge?","answer":"Yes, but you need to be careful initially. Avoid hard, sticky, and crunchy