What D2791 means

D2791 covers a crown — full cast predominantly base metal. "D" is dental, "27" is the crowns group, and "91" is this full cast base-metal crown. Like the full cast high-noble (gold) crown (D2790), it's a full metal crown — made entirely of metal (cast as one piece), covering the whole tooth, with no porcelain. The difference is the metal: this uses predominantly base metal (less than 25% noble metal — mostly non-noble metals like nickel-chromium or cobalt-chromium), the most economical metal category.

So it's a full-metal crown made of base metal — strong and durable, the most economical of the full-metal crowns. Base metals are strong (cobalt-chromium and nickel-chromium are notably strong and rigid), making for a durable crown, though without gold's particular gentleness on opposing teeth, and with the considerations of base metal's biocompatibility and potential nickel sensitivity.

The full cast metal crown codes are by metal type: high noble (D2790), predominantly base metal (D2791, this one), and noble metal (D2792); titanium is D2794. The base-metal version is the most economical full-metal crown. Like other full-metal crowns, it's metal-colored (not tooth-colored), suiting back teeth. Coverage is under major restorative benefits, often around 50 percent, with frequency limits; base metal is often the type insurance uses as the baseline rate.

When it's typically used

D2791 is reported for a full cast predominantly base metal crown — a crown made entirely of base metal, used on back teeth where a strong, durable full-metal crown is wanted economically and the metal color isn't a concern, with base metal as the more affordable full-metal option.

How much does D2791 cost?

A full cast base-metal crown is a significant fee, often roughly 700 to 1,300 USD depending on region — generally the most economical full-metal crown (base metal being much less expensive than gold), while still providing a strong, durable full-metal restoration. It's often the metal type insurance uses as the baseline rate for crowns.

Is D2791 covered by insurance?

Covered under major restorative benefits, often around 50 percent, with frequency limits (e.g., once per tooth per 5-10 years). Base metal is often the metal type plans use as the baseline for crown coverage, so a base-metal crown typically aligns with the covered rate (no alternate-benefit downgrade for choosing a more expensive metal). The code must match the alloy used. If a patient has a known nickel sensitivity, an alternative metal may be considered.

The economical full-metal crown

The base-metal full crown is the economical full-metal option, and understanding this clarifies its appeal.

The full-metal crowns differ by their metal, which affects cost. The base-metal version (D2791) uses predominantly base metal (less than 25% noble metal — mostly non-noble metals like nickel-chromium or cobalt-chromium), the most economical metal category (not containing expensive gold or other noble metals). So a base-metal full crown is the most affordable full-metal crown, providing a strong, durable, full-metal restoration at a much lower metal cost than a gold (high-noble) crown. For patients wanting a durable full-metal crown economically (for a back tooth where the metal color isn't a concern), the base-metal version delivers this at the lowest full-metal cost.

Base metals (particularly cobalt-chromium and nickel-chromium) are strong and rigid, making durable full-metal crowns — so the base-metal full crown is strong and durable, performing well functionally, with the economy not meaning poor strength. Additionally, since base metal is often the metal type insurance plans use as the baseline (paying toward a base-metal crown), choosing the base-metal version often aligns with the covered rate (avoiding the alternate-benefit downgrade that applies when choosing a more expensive metal like gold) — so it may have a lower out-of-pocket cost in terms of insurance. The trade-offs compared with gold are that base metal lacks gold's particular gentleness on opposing teeth (base metals are harder and can wear opposing teeth more than gold) and gold's premium biocompatibility, plus the nickel-sensitivity consideration. For patients, understanding that the base-metal full crown is the economical full-metal option — providing a strong, durable full-metal restoration at the lowest cost, and often aligning with the insurance baseline rate — clarifies its appeal. It's the affordable full-metal choice for back teeth. The dentist determines whether it suits the tooth and patient (considering any sensitivities). Understanding the economical full-metal option helps patients see why a base-metal full crown might be chosen — for a durable full-metal crown economically, often aligning with insurance coverage, with the considerations of base metal's gentleness, biocompatibility, and potential nickel sensitivity relative to gold.

Base metal's strength and characteristics

Base metals have particular strengths and characteristics as a full crown, and understanding them helps patients understand this crown.

Base metals (nickel-chromium, cobalt-chromium) have notable characteristics for a full crown. Strength and rigidity: base metals are strong and rigid — in fact, cobalt-chromium and nickel-chromium are notably hard and strong, making very durable, fracture-resistant full crowns. This strength is an advantage for durability. Economy: they're the most economical metal category. Hardness: base metals are harder than gold, which has a consideration — being harder, a base-metal crown can wear the opposing teeth more than a gold crown (gold's gentleness wears at a rate kind to enamel, while harder base metals may wear opposing teeth more over time). Biocompatibility and sensitivity: base metals are generally considered somewhat less biocompatible than noble metals, and nickel (in nickel-chromium alloys) can cause sensitivity in susceptible patients (so for a known nickel allergy, an alternative like cobalt-chromium without nickel, or a noble metal, would be considered).

So a base-metal full crown is strong, durable, and economical, with the characteristics of being harder (potentially wearing opposing teeth more than gold) and the biocompatibility/sensitivity considerations. For many back teeth in patients without relevant sensitivities, a base-metal full crown provides durable, economical full coverage. The dentist considers the tooth, any metal sensitivities, and the opposing teeth in determining whether a base-metal full crown is appropriate. For patients, understanding base metal's strengths (strong, rigid, durable, economical) and characteristics (harder, potentially wearing opposing teeth more than gold; biocompatibility/sensitivity considerations) helps them understand this crown. It's strong and economical, with the hardness and biocompatibility factors to consider. The dentist weighs these, including any sensitivities and the opposing teeth. Understanding base metal's characteristics helps patients appreciate when a base-metal full crown is appropriate — providing durable, economical full coverage for back teeth in patients without relevant sensitivities, with the dentist considering the hardness (and effect on opposing teeth), biocompatibility, and any nickel allergy in the decision.

Base metal vs gold for full crowns

Choosing between base metal and gold for a full crown involves weighing their properties, and understanding the comparison clarifies the choice.

For a full-metal crown, base metal (D2791) and gold/high-noble (D2790) differ in several ways. Cost: base metal is much more economical (gold's cost is high and varies with gold prices), so base metal is the budget-friendly full-metal option. Gentleness on opposing teeth: gold is gentle (wearing like natural enamel), while base metals are harder and can wear opposing teeth more — so gold is kinder to the opposing dentition. Biocompatibility: high noble (gold) is excellently biocompatible, while base metals are somewhat less so (with nickel-sensitivity concerns for some). Durability: both are durable (base metals are strong; gold is renowned for longevity) — both make long-lasting crowns, though gold's particular qualities (not chipping, precise margins) are well-proven. Insurance: base metal is often the covered baseline rate, so a gold crown may involve paying the difference (the downgrade).

So the choice weighs economy (base metal) against gold's gentleness on opposing teeth, premium biocompatibility, and proven longevity. For a patient prioritizing economy (and without nickel sensitivity), the base-metal full crown; for a patient prioritizing gold's gentleness, biocompatibility, and proven longevity (and willing to pay the premium), the gold crown. Both provide durable full-metal coverage for back teeth. The dentist discusses the options, weighing the cost, the effect on opposing teeth, biocompatibility, any sensitivities, and longevity. For patients, understanding the comparison — base metal (economical, harder, can wear opposing teeth more, sensitivity considerations) versus gold (gentle on opposing teeth, biocompatible, proven longevity, pricier) — helps them choose. Both are durable; the choice balances economy against gold's particular benefits. The dentist's recommendation considers these factors. Understanding the comparison helps patients see why a base-metal or a gold full crown might be chosen, balancing the economy of base metal against gold's gentleness, biocompatibility, and proven longevity, guided by the patient's priorities and any metal sensitivities for their back-tooth crown.

When a base-metal full crown is appropriate

A base-metal full crown suits particular situations, and understanding when it's appropriate clarifies its role.

A base-metal full crown might be appropriate when several factors align. Economy is a priority: the base metal makes this the most affordable full-metal crown, suiting situations where cost is a significant consideration. A durable full-metal crown is wanted: the crown provides strong, durable full coverage, suitable for a back tooth needing a durable restoration. The metal color is acceptable: it's a back tooth where the metal color isn't a concern (full-metal crowns being metal-colored). No relevant metal sensitivity: the patient doesn't have a known sensitivity to the base metals (particularly nickel), or a nickel-free base metal (cobalt-chromium) is used. The opposing teeth and other factors are considered: the dentist judges the base-metal crown appropriate (considering its hardness and effect on opposing teeth). When these align — economy prioritized, a durable full-metal crown wanted for a back tooth, metal color acceptable, no relevant sensitivity — a base-metal full crown is a reasonable, economical choice.

The crown provides durable, economical full-metal coverage, with the considerations of base metal's hardness (effect on opposing teeth), biocompatibility, and any sensitivity. It's chosen over a gold crown for economy (accepting the trade-offs of gentleness and biocompatibility), and it's a full-metal option (versus tooth-colored crowns) for back teeth where durability and economy are prioritized over aesthetics. The dentist determines whether it suits the tooth and patient. For patients, understanding when a base-metal full crown is appropriate — when economy is prioritized, a durable full-metal crown is wanted for a back tooth, the metal color is acceptable, and there's no relevant metal sensitivity — clarifies its role. It's the economical full-metal crown for back teeth. The dentist determines whether it suits the specific tooth and patient. Understanding when it's appropriate helps patients see why a base-metal full crown might be recommended — for durable, economical full-metal coverage on a back tooth where economy is prioritized and the metal color is acceptable, with the base metal's economy as the main appeal and the gentleness, biocompatibility, and sensitivity factors weighed by the dentist for their tooth and situation.

Frequently asked questions

What is the D2791 dental code?

It's a full cast predominantly base metal crown — a crown made entirely of base metal (such as nickel-chromium or cobalt-chromium), with no porcelain. It's the most economical full-metal crown, strong and durable, used on back teeth where metal color isn't a concern.

What is 'predominantly base metal'?

Alloys with less than 25% noble metal, made mostly of non-noble metals like nickel-chromium or cobalt-chromium — the most economical dental metal category. They're strong and rigid (very durable) but less biocompatible than gold, and nickel can cause sensitivity in some patients.

How is it different from a gold full crown?

The metal differs — base metal (D2791, economical, harder, can wear opposing teeth more) versus high noble/gold (D2790, gentle on opposing teeth, biocompatible, proven longevity, pricier). Both are durable full-metal crowns; base metal is the economical option.

Are base-metal full crowns strong?

Yes — base metals (especially cobalt-chromium and nickel-chromium) are notably strong and rigid, making very durable, fracture-resistant full crowns. They perform well structurally despite being the economical metal category. They're harder than gold, though, so can wear opposing teeth more.

How much does a base-metal full crown cost?

Often around 700 to 1,300 USD, generally the most economical full-metal crown (base metal being much less expensive than gold), while still providing a strong, durable full-metal restoration. It's often the metal type insurance uses as the baseline rate.

When is a base-metal full crown appropriate?

When economy is a priority, a durable full-metal crown is wanted for a back tooth, the metal color is acceptable, and there's no relevant metal sensitivity (particularly nickel). It provides durable, economical full-metal coverage, often aligning with insurance coverage.

This page is an independent, plain-language explanation for general information only. It is not billing, coding, or clinical advice. For the official CDT descriptor and current-year wording, refer to the American Dental Association.