From your eighteenth birthday, the routine dental check leaves the basic health insurance

Most people discover this line when the first dental bill arrives. Dutch basic health insurance splits by age. Under 18 it covers a broad package, and the examples the government gives are the periodic check, removing tartar, fillings and surgical dental care. From 18 the basic insurance covers the costs of surgical dental care, X-ray examination and removable dentures, and nothing more. The treatment people actually use most often, the routine check, leaves the package on a birthday rather than becoming cheaper. It is worth being precise about what changed, because the wording is not about a smaller reimbursement but about a category leaving the package entirely, which is why the first invoice after a birthday so often looks like an error rather than a rule working as intended.

The line catches newcomers particularly hard because it has nothing to do with whether you are insured. You hold basic insurance and the check-up is still yours to pay. The only route back is supplementary cover, and unlike the basic package, which is identical nationwide, each insurer sets its own scope and reimbursement percentages for supplementary policies. Supplementary cover can usually only be adjusted around the annual switching moment, so the judgement has to be finished before then rather than after a bill lands.

• Separate by age first. Household members under 18 already have the periodic check, scaling and fillings inside the basic package, so they do not need supplementary cover of their own
• List your real usage. Count how many times you visited a dentist in the past two years and what each bill was, then divide the total by two for your own average annual dental spend
• Compare one sum. Multiply the supplementary monthly premium by twelve and set it against that average. If twelve months of premium exceeds what you actually spend, the policy is buying risk cover rather than savings, and the question becomes whether you could absorb one large treatment
• Remember the three covered items have limits. Removable dentures carry an own contribution and surgical care has exclusions, so the exact conditions come from your own policy for that year

Hokimi field note: the step people skip is looking back two years. Estimating your own dental frequency from memory almost always undercounts it; pulling two years of bills and halving the total usually produces a different number, and whether supplementary cover earns its premium turns on exactly that number. The basic package scope is at source 1 and what to watch when switching insurer at source 2.