Filling Cost Calculator: How Much Does a Filling Cost?

A dental filling is one of the most common restorative procedures, but the price tag swings widely based on the material, how many tooth surfaces are involved, your dentist's region, and whether you have insurance. In 2026, a typical one-surface amalgam filling runs about $150 in a mid-tier metro, while a three-surface composite in a high-cost coastal city can exceed $450. A porcelain inlay on the same tooth might break $900. This calculator translates those variables into a personalized estimate so you can plan before the chair reclines.

Use this tool to compare scenarios: switching from composite to amalgam, choosing an in-network dentist, or adding a second cavity to the same visit. For example, a patient in a major metro getting two two-surface composite fillings without insurance may pay around $520, while the same work with 50% insurance coverage drops to roughly $260. The example numbers in our headline are defaults only, not hard-coded limits — change any input and the math updates to match your situation.

How it works: Enter the filling material, number of surfaces, region cost tier, dentist tier, and your insurance coverage. The calculator estimates the gross fee, applies your insurance percentage, and shows your out-of-pocket cost.

What a Dental Filling Really Costs in 2026

Filling prices depend on material, tooth surfaces, geography, and insurance — here is how those levers move the number, with concrete 2026 benchmarks.

Typical filling cost by material (per tooth, mid-cost region, 2026)

Regional cost multipliers vs. national average

Why composite costs more than amalgam

Composite resin fillings bond chemically to the tooth and match enamel color, but they take longer to place and require a moisture-controlled field. That extra chair time — typically 30–45 minutes versus 15–20 for amalgam — drives a 30–50% price premium. A general rule of thumb: budget an extra $50–$80 per surface to upgrade from amalgam to composite. Many PPO plans now pay the composite rate on front teeth but downgrade molars to the amalgam fee, leaving you to cover the difference, often $40–$120 per tooth.

How surfaces are counted

Dentists bill by the number of tooth surfaces involved: occlusal (top), mesial, distal, buccal, and lingual. A small cavity on the chewing surface alone is a one-surface filling (D2391 for composite). A cavity that wraps from the top down between two teeth is two surfaces (D2392). Rule of thumb: each additional surface adds roughly 30–40% to the per-tooth fee. Once you hit four or five surfaces, most dentists recommend an onlay or crown ($1,200–$2,000) because the remaining tooth structure is too thin to hold a filling reliably.

What insurance actually covers

Most dental PPOs categorize fillings as 'basic restorative' and cover 70–80% after a deductible of $25–$100. HMO/DMO plans use a fixed copay schedule — often $30–$90 per surface — with no percentage math. A common pitfall: annual maximums of $1,500–$2,000 cap total benefits, so if you have crowns or a root canal in the same year, your filling coverage may already be exhausted. Always request a pre-treatment estimate; insurers will return a written breakdown of allowed fees, deductible status, and patient responsibility within 5–10 business days.

DSO chains vs. independent dentists

Dental Service Organizations (Aspen Dental, Western Dental, Pacific Dental) typically price 5–15% below independent general dentists in the same zip code, because volume contracts and centralized purchasing lower their per-procedure overhead. Boutique cosmetic practices, by contrast, run 15–25% above the local mean and may bundle 'aesthetic finishing' fees. Rule of thumb: if cost is your top concern and the cavity is straightforward, a DSO or community health center is the cheapest path. For complex restorations on visible teeth, a vetted cosmetic dentist usually justifies the premium with better shade matching.

Hidden add-ons to watch for

The advertised filling fee rarely includes the exam ($50–$95), bupropion-free X-rays ($35–$150 for bitewings), or local anesthetic in some offices ($25–$45). If the cavity is deep, you may also need a pulp cap or liner ($45–$95) or a temporary sedative filling ($55–$110) before the permanent restoration. Rule of thumb: add roughly 15–25% to the quoted filling fee for a realistic visit total if you are a new patient. Returning patients within 12 months usually skip the comprehensive exam and save $50–$100.

Ways to lower your out-of-pocket cost

Three reliable levers: enroll in a dental discount plan ($100–$180/year, typical 20–25% discount on fillings) if you lack insurance; ask if the office offers a 5% prompt-pay or same-day cash discount, which most independent practices honor; or schedule treatment at a dental school clinic, where supervised students charge 40–60% below private rates. Rule of thumb: paying cash upfront on a $400 filling at an independent office often saves $20–$30 just by asking. Avoid carecredit-style financing unless you can clear the balance during the 0% promo window — deferred interest is steep.

When a filling is not the right answer

If a cavity reaches the pulp or covers more than half the tooth's biting surface, a filling will not hold up — expect to be referred for a root canal ($900–$1,500) plus a crown ($1,100–$1,800). Rule of thumb: when your dentist says 'we could try a filling, but…' the long-term odds favor the larger restoration. Replacing a failed filling within 2–3 years typically costs the same as the original plus an exam fee, so a single well-placed crown often saves money over a decade compared to two or three filling redos.

How This Calculator Works: Methodology & Parameter Explanations

Core formula: perFilling = (baseFee[material] + surfaceAdd[material] × (surfaces − 1)) × regionMultiplier × dentistTierMultiplier; gross = perFilling × numberOfFillings; insurancePays = max(0, gross − deductible) × (coverage% / 100); outOfPocket = gross − insurancePays.

Parameter explanations

Assumptions

Headline cost figures in the keyword (e.g. typical filling prices) are example defaults — the calculator computes any combination of material, surfaces, region, and coverage you enter.

Insurance is modeled as a flat reimbursement percentage after a single deductible application, which approximates most PPO plans but ignores annual maximums and downgrade clauses.

Base fees reflect 2026 mid-cost-region averages compiled from published fee surveys; individual dentists may price 20% higher or lower.

The calculator does not include the new-patient exam, X-rays, or anesthesia add-ons; budget an extra 15–25% for a first visit.

Parameter meanings