Insurance · Updated 2026-09-08 · 5 min read
What is the age limit for sealants (D1351)?
Most commercial sealant caps fall between 13 and 19, with one federal plan at 22, and molars only is the default. Only 5.5% of Cigna D1351 lines and 0.5% of Guardian's are denied for age.
Most commercial sealant (D1351) age caps fall between 13 and 19, with one federal plan running to 22, and two rules travel together: the age, and the tooth. Permanent molars only is the commercial default, and several carriers exclude premolar sealants by name rather than by omission. As of September 2026, sealants are denied for age far less often than fluoride — 5.5% of Cigna's D1351 lines, 3.4% of Delta Dental's, 1.6% of MetLife's and 0.5% of Guardian's — because those caps sit above the age at which sealants are actually placed, while fluoride caps land in the middle of the pediatric recall population. When a sealant is denied, the tooth is more often the reason than the birthday.
What we measured
| carrier | D1351 lines | practices | denied for age | share |
|---|---|---|---|---|
| Cigna | 1,160 | 20 | 64 | 5.5% |
| Delta Dental | 6,352 | 19 | 216 | 3.4% |
| United Healthcare | 419 | 10 | 9 | 2.1% |
| MetLife | 2,122 | 18 | 34 | 1.6% |
| Guardian | 861 | 15 | 4 | 0.5% |
Every remittance line billed under D1351 to that carrier, all dates, with the share paying $0 for an age-limitation reason. Measured September 2026 across 37 practices and more than 170 payers; Delta Dental member companies are pooled. For comparison, the same carriers age-deny fluoride varnish at 26.6% (Cigna) and 10.9% (Delta Dental). Denials for the wrong tooth do not land in the age bucket, so this table understates how often a sealant is refused.
What the carriers' own policies say
Four federal plans state the same benefit with four different ages and phrasings, all in the same plan year.
United Concordia, 2026 FEDVIP dental brochure:
"D1351 Sealant – per tooth – Limited to permanent molars through age 18. One sealant per tooth in a 3-year period"
The MetLife Federal Dental Plan, 2026 FEDVIP brochure:
"D1351 Sealant - per tooth - Limited to unrestored permanent molars - Less than age 19. 1 sealant per tooth every 36 months"
Those two say the same thing: covered through 18. The UnitedHealthcare FEDVIP dental plan, 2026 OPM brochure, says it a third way — "Limited to covered persons under the age of 19 years and once per first or second permanent molar every consecutive 36 months" — and its network policy states the tooth rule flatly: "Sealants for teeth other than permanent molars are not covered."
Humana's 2026 FEDVIP dental brochure is the tightest of the group:
"D1351 Sealant – per tooth - Limited to permanent molar and children under age 18. One sealant per tooth in a 3-year period."
"Under age 18" means through 17 — a full year less than the two plans above.
BCBS FEP Dental's 2026 benefit brochure runs the highest:
"D1351 Sealant - per tooth - Unrestored 1st and 2nd permanent molars for individuals up to age 22 - Limit 1 every 36 months"
Guardian's DentalGuard Preferred network dentist manual, November 2020, sets a lower bar than any of them:
"Sealants are covered on dependents under age sixteen (16), on permanent, unrestored molar teeth, once in a thirty-six (36) month period."
Why it depends on the plan
Premolars are the sharpest split in this cluster. Aetna's published rule restricts sealants to first and second permanent molars; its 2026 FEDVIP dental brochure lists sealants for teeth other than permanent molars among the services it does not cover. Delta Dental's federation-wide exclusion is "sealants on bicuspids / premolars — permanent molars only". Blue Cross Blue Shield of Illinois and of Texas both list sealants on teeth other than permanent molars as not covered.
The exceptions are real, and each is a named plan family rather than a carrier-wide policy. Cigna's carrier-wide rule pays sealants on "unrestored permanent bicuspid or molar teeth" on most plans. Guardian's pediatric essential health benefit rule covers permanent molars and premolars to age 19, which its own policy notes is broader than MetLife or Delta. Delta Dental of Arizona covers permanent molars and bicuspids at ages 13 to 19 on most of its plans — a genuine exception to the federation's molars-only rule, and one Delta company's rule, not Delta's. Pennsylvania's Medical Assistance program pays one sealant per lifetime on premolars as well as first and second molars for members under 21.
Ages vary the same way. Ameritas publishes one per tooth per three years for age 16 and under, with many plans at 15. Cigna's carrier-wide range is under 14 to 16, and its DPPO Advantage network runs one sealant per lifetime under age 14, the most restrictive rule in this evidence. Blue Cross Blue Shield of Arizona publishes one per tooth per lifetime through 15. Blue Cross Blue Shield of Alabama pays only on first permanent molars, through age 13, with a $20 maximum payment per tooth.
What to do
- Ask for the age and the tooth list in the same question. A plan that says "19" and means molars only will still deny a premolar on a 12-year-old.
- Resolve the phrase before you record it. "Through age 18", "less than age 19" and "under the age of 19 years" are all through 18; "under age 18" is through 17.
- Check which molars the plan will pay on, not just the age. One carrier here pays only the four first permanent molars, so a plan that answers 19 can still refuse half the mouth.
- Where premolar sealants are clinically indicated and the plan excludes them, present them as a patient charge up front rather than billing and appealing.
- On state Medicaid, check the tooth list rather than assuming the commercial rule; some programs seal premolars and some name the eight teeth they will pay on.
Numbers last refreshed September 2026.