✶ PPO Terms Explained

Every dental insurance term
worth knowing — PPO glossary 2026.

23 plain-language definitions, from annual maximum to waiting period. Know what your plan actually says before the bill arrives.

ADA fee schedule

The ADA fee schedule is a set of benchmark prices published annually by the American Dental Association based on what dentists across the country actually charge for each procedure code. PPO carriers use these benchmarks as a reference point when negotiating their own allowed amounts with in-network dentists. The survey results are broken down by region and percentile, so a carrier might pay at the 80th percentile in one city and the 70th in another. Your EOB will usually show the billed fee, the allowed amount, and the write-off between them.

A common source of confusion: the ADA fee schedule is not what you owe. It is the ceiling from which negotiations happen. Once a dentist signs an in-network contract, they agree to accept the carrier's allowed amount, which is typically below the published benchmark, as payment in full.

Why this matters

Why it matters: Understanding the ADA schedule helps you decode the write-off column on your EOB. That contractual adjustment is money your in-network dentist agreed not to charge you. It is the financial benefit of staying in-network, made visible as a line item.

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Allowed amount

The allowed amount is the maximum fee your PPO carrier will recognize for a specific procedure, as negotiated with in-network providers. When you receive care from an in-network dentist, your coinsurance percentage is calculated on the allowed amount, not on the dentist's full billed charge. The difference between the billed amount and the allowed amount is written off entirely.

A crown might be billed at $1,800, but if the allowed amount is $1,100, your coinsurance applies to $1,100. At 50 percent major coverage, you owe $550, not $900. If you saw an out-of-network dentist, the $700 gap between full fee and allowed amount could become balance billing you owe on top.

Why this matters

Why it matters: The allowed amount is the number your actual bill is based on. Patients who compare plans on monthly premium alone often miss this. A plan with a slightly higher premium but a more generous allowed amount can save hundreds on a single crown.

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Annual maximum

The annual maximum is the most your PPO plan will pay for covered dental services in a single plan year. Once you reach this limit, all further dental costs that year are 100 percent out of pocket, even for procedures the plan would otherwise cover. The cap resets at the start of the next plan year and does not roll over if unused.

Individual PPO plans typically offer annual maximums between $1,000 and $3,500. Some carriers, including Ameritas, increase the maximum in Year 2 and beyond. Preventive services are usually excluded from the accumulator, meaning your cleanings and exams do not count against the limit. If you need both a root canal and a crown in the same year, the combined cost can easily approach or exceed a $1,500 cap.

Why this matters

Why it matters: Knowing your annual maximum helps you sequence expensive treatment across two plan years when possible. Scheduling a crown in December and the follow-up procedure in January effectively doubles the reimbursement available to you.

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Balance billing

Balance billing happens when you receive care from an out-of-network dentist and they charge you the difference between their full fee and the amount your PPO plan is willing to pay. Unlike in-network providers, out-of-network dentists have not agreed to accept the carrier's allowed amount as payment in full, so the gap becomes your bill.

If a dentist charges $1,600 for a crown and your plan allows $950 and pays $475 at 50 percent coinsurance, an in-network dentist cannot bill you more than $475. An out-of-network dentist can bill you the full remaining $1,125. The gap is not a plan error. It is the cost of going outside your network. Always confirm in-network status before your appointment.

Why this matters

Why it matters: Balance billing is the most common source of unexpected dental bills. Calling a dentist and asking whether they "accept" your insurance is not sufficient. You must verify that they are contracted in-network with your specific PPO carrier before the procedure.

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Basic services

Basic dental services include procedures that repair existing damage: fillings, simple extractions, and basic periodontal scaling. Most PPO plans cover basic services at 80 percent of the allowed amount after your deductible. Some plans have a waiting period of three to six months before basic coverage activates, though several carriers, including UHC and Ameritas, activate basic services from day one.

A two-surface composite filling (CDT code D2392) might be billed at $230, with a carrier allowed amount of $185 and an 80 percent plan payment of $148. Your share after deductible is $37. If you have not met your deductible yet, add the deductible balance on top. Knowing this math in advance lets you budget accurately before sitting in the chair.

Why this matters

Why it matters: Fillings are the most common adult dental need. Basic services coverage rates and waiting periods directly determine how much a new plan costs you in the first few months of enrollment, making them the most important tier to compare when you need work soon.

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Calendar year reset

A calendar year reset means your deductible, annual maximum, and frequency limits all start fresh on January 1, regardless of when you enrolled. Delta Dental, UHC, Aetna, and Mutual of Omaha operate on calendar years. If you enroll in October, you have only three months to use that year's benefits before everything resets.

This creates a strategic window at the end of each year. If you have met your deductible by November, scheduling additional covered work in December lets you get more reimbursement before the reset. Conversely, if you have not met your deductible by late December, it may be worth deferring non-urgent work to January when the deductible restarts on a clean slate alongside the new annual maximum.

Why this matters

Why it matters: Your reset date is the most underused tool in dental cost management. Patients who know their plan year end date make better decisions about sequencing crowns, root canals, and other expensive work across two calendar years to double the available reimbursement.

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CDT codes

CDT codes (Current Dental Terminology) are standardized five-digit billing codes beginning with the letter D that the American Dental Association publishes and updates annually. Every dental procedure has a CDT code, from D0120 (periodic exam) to D6010 (implant fixture). Insurance carriers apply the same reimbursement to the same code regardless of which in-network office performs the procedure.

This portability matters. If your dentist quotes $1,650 for a D2740 porcelain crown and an in-network dentist across town quotes $2,100 for the same D2740, your insurance pays the same allowed amount at both offices. The estimate from a second office is not more expensive to your insurance. It may be more expensive to you only if you choose the out-of-network provider.

Why this matters

Why it matters: CDT codes make dental estimates portable. You can take a treatment plan from one office and get a competing estimate using the same codes, knowing your insurance pays the same amount at any contracted provider. It removes the mystery from dentist shopping.

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Coinsurance

Coinsurance is the percentage of the allowed amount you pay for a covered dental procedure after the deductible. Standard PPO coinsurance tiers are 100 percent plan coverage on preventive care (you pay zero), 80 percent plan coverage on basic services (you pay 20 percent), and 50 percent plan coverage on major work (you pay 50 percent).

Coinsurance applies to the allowed amount, not the dentist's full billed fee. For a crown with a $1,300 allowed amount and 50 percent major coinsurance, the plan pays $650 and you pay $650, before accounting for the deductible. Some plans step up the major percentage in Year 2. Ameritas covers basic at 90 percent in Year 2; Humana covers major at 60 percent by Year 2. Comparing coinsurance percentages, not just premiums, is the most important part of choosing a plan for specific treatment.

Why this matters

Why it matters: Coinsurance is what insurance is actually worth on a procedure. A plan that looks affordable at $30 per month but pays only 20 percent on major work in Year 1 might cost you more out of pocket than a $75-per-month plan that covers 50 percent on the same crown.

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CoverCapy rating

The CoverCapy rating is a 0-to-100 score calculated for each PPO plan using four equally weighted factors: coverage breadth across all tiers, annual maximum value, average waiting period across basic and major tiers, and value defined as coverage delivered per dollar of monthly premium. The score lets you compare plans on a consistent scale before reading the fine print.

A plan with a high rating is not necessarily the cheapest plan, and it is not necessarily the right plan for every situation. A patient who needs immediate major work will weigh waiting-period score very heavily. A patient who only needs cleanings may be best served by the plan with the highest preventive coverage and lowest premium, regardless of major coinsurance. Use the rating as a fast filter, not a final verdict.

Why this matters

Why it matters: No carrier pays for a higher CoverCapy score. The algorithm runs identically across all plans. If two plans are close in score, the three-question match wizard on the compare page will separate them based on your specific treatment need and timing.

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Compare PPO dental plans side by side

Annual maximum, coinsurance, waiting periods, and activation dates for eight PPO plans in one table.

Day 1 activation

Day 1 activation means a coverage tier has zero waiting period and is usable starting on your effective date, the first day you are enrolled. Preventive care is almost universally day one across all PPO plans. A smaller number of plans extend day-one activation to basic services. Ameritas PrimeStar Complete goes further, covering major work including crowns from day one at 20 percent, which is rare in the individual PPO market.

Day-one coverage is not the same as no waiting period on every tier. A plan may have day-one preventive and basic coverage but still impose a six-month wait on crowns. Always check each tier separately. If you need a filling this week, what matters is whether basic services are day one. If you need a crown this month, look specifically at the major services waiting period.

Why this matters

Why it matters: Day-one activation on the tier that matches your treatment need is the single most important feature for patients who need care immediately. "Get cover today, see a dentist tomorrow" only holds if the tier covering your treatment has no waiting period on day one.

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Deductible

A dental deductible is the fixed dollar amount you pay out of your own pocket on covered restorative services each plan year before your insurance begins sharing costs. Most individual PPO deductibles fall between $50 and $150 per person. Preventive care, including cleanings and exams, is typically exempt from the deductible, meaning you owe nothing out of pocket for those visits regardless of whether you have met it.

The deductible applies before coinsurance kicks in. If your deductible is $50 and you have not used any dental benefits this year, the first $50 of a restorative procedure comes out of your pocket before the 80/20 or 50/50 split begins. Once you meet the deductible for the year, it does not apply again until the plan year resets. The deductible is not a cost ceiling. It is a starting line.

Why this matters

Why it matters: Patients often confuse the deductible with the total they will owe. It is actually the first layer of a three-layer cost structure: deductible, then coinsurance, then anything above the annual maximum. Knowing all three gives you the real number before treatment begins.

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Effective date

The effective date is the calendar day your dental insurance coverage officially begins. Any care received before this date is not covered, even if you enrolled and made a premium payment beforehand. Activation schedules vary widely by carrier. UHC, Ameritas, and Mutual of Omaha activate within one to three business days. Delta Dental activates on the 1st or 15th of the month, your choice at enrollment. Guardian and Aetna activate on the 1st of the following month.

If you enroll with Guardian on a Thursday expecting to use benefits Friday, you will wait until the 1st of the following month before any coverage is active. That gap can be weeks. For urgent treatment, choose a carrier with next-business-day activation, confirm your specific effective date in writing, and schedule after that date.

Why this matters

Why it matters: Effective dates determine when "Get cover today, see a dentist tomorrow" is literally true. Enrolling on a Monday with the right carrier can mean you are covered Wednesday. Enrolling with the wrong carrier can mean you wait five weeks. The difference is choosing a plan whose activation window fits your timeline.

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Implants

A dental implant is a titanium post surgically placed into the jawbone to permanently replace a missing tooth. It is classified as a major dental procedure. PPO coverage for implants varies more than any other service category. Some plans exclude implants entirely. Others cover at 20 to 50 percent after a six-to-twelve month waiting period. Ameritas PrimeStar Complete covers implants at 20 percent from day one. Humana's coverage reaches 60 percent in Year 2.

A full implant involves three separate procedures and CDT codes: the fixture (D6010, placed in bone), the abutment (D6057 or D6058), and the crown (D6065 through D6067). Total cost typically ranges from $3,000 to $5,000 per tooth. A missing tooth clause can block coverage entirely if the tooth was absent before your current policy started, regardless of how long you wait. Always request a predetermination estimate before scheduling implant work.

Why this matters

Why it matters: Implants are one of the highest dental costs a patient faces. Plan selection for implant coverage requires checking three things: whether implants are covered at all, whether the missing tooth clause applies, and what the annual maximum is relative to the full treatment cost. Two or three plan years of benefits may be needed to fully fund a single implant.

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In-network dentist

An in-network dentist is a licensed provider who has signed a contract with your PPO carrier agreeing to accept negotiated, reduced fees and to file insurance claims on your behalf. In-network status produces two concrete benefits: the dentist cannot charge you more than the allowed amount (no balance billing), and claim submission is handled automatically at the point of service.

The same cleaning at an in-network dentist might bill at $195 with a carrier allowed amount of $110 and a 100 percent plan payment, leaving you owing zero. At an out-of-network dentist, the plan might pay $110 toward the $195 charge, and you could be balance billed the remaining $85. That is an $85 gap on a single preventive visit. The gap grows significantly on crowns and root canals. Always verify in-network status directly with the carrier, not just with the dental office, before your appointment.

Why this matters

Why it matters: In-network status is the single largest lever for reducing out-of-pocket dental costs. A dentist who "takes your insurance" may still be out-of-network with your specific PPO product, even if they work with the same carrier's other plans. Confirming in-network status before treatment protects you from balance billing.

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Find an in-network PPO dentist near you

Search verified PPO dentists by city or ZIP. Filter by carrier, see eligibility status, and book with confidence.

Major services

Major dental services include crowns, root canals, bridges, and dentures. They are the most expensive and least-covered tier in most PPO plans. Standard coverage is 50 percent of the allowed amount after both the deductible and the waiting period, which is typically six to twelve months on individual plans. Some carriers offer step-up coverage: Ameritas covers major work at 50 percent in Year 2 from a day-one starting point; Humana reaches 60 percent by Year 2.

An important complication is the alternate benefit clause (also called the least expensive alternative rule). If a plan would cover a filling on a tooth that could theoretically be restored either by filling or by crown, the carrier may pay only the filling rate even if you and your dentist choose a crown. This means the plan's 50 percent on major coverage does not always apply to the full crown allowed amount. Request a predetermination estimate that specifies the CDT code and the expected benefit before scheduling any major procedure.

Why this matters

Why it matters: Major services coverage rates determine your out-of-pocket on the most expensive dental work you will face. A one-percentage-point difference in coverage matters far less than the waiting period length. For anyone who needs a crown or root canal in the next six months, the waiting period is the controlling factor, not the premium.

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Missing tooth clause

A missing tooth clause is an exclusion that prevents a PPO plan from covering the replacement of a tooth that was already absent before your policy's effective date. If you lost a molar two years ago and enroll in a new plan today, many plans will deny implant or bridge coverage for that specific tooth, regardless of waiting periods or major service benefit levels. The clause is buried in the certificate of coverage, not the plan summary.

The impact is significant: a tooth absent before coverage started may never be covered for replacement under that plan, even after years of enrollment. Before purchasing a plan with implant work in mind, request a written predetermination using the specific CDT codes for the procedure and the tooth number. If the missing tooth clause applies, the carrier will say so in writing before you spend a dollar. Some carriers, including Ameritas, are known to be more flexible; always verify directly with the carrier for your specific situation.

Why this matters

Why it matters: Patients who buy a PPO specifically for implant coverage on an existing gap frequently discover the clause after the fact. Getting a predetermination in writing before enrolling is the only reliable way to know whether a specific replacement procedure will be covered under a specific plan.

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Out of pocket

Your out-of-pocket dental cost is the total amount you personally pay after insurance benefits are applied. It is not the same as your premium, which you pay monthly whether or not you use any care. Out-of-pocket cost is composed of three layers: the deductible (your first dollars on covered restorative work), coinsurance (your percentage share of the allowed amount on each procedure), and any charges that exceed the annual maximum or fall entirely outside plan coverage.

For a root canal with a $1,200 allowed amount on a plan with a $50 deductible and 50 percent major coverage: after the deductible, you pay 50 percent of the remaining $1,150, which is $575. Total out of pocket: $625. If you have already met your deductible earlier in the year, the total drops to $600. If the root canal pushes you past your annual maximum, every dollar above the cap is 100 percent your responsibility regardless of coverage percentages.

Why this matters

Why it matters: Out-of-pocket cost is the number patients actually care about, and it is the number most difficult to find on a plan summary. Running the math before treatment, using real allowed amounts for your specific procedure and carrier, is the only way to avoid bill shock after the fact.

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Plan year

A plan year is a 12-month benefit cycle that resets on your enrollment anniversary rather than on January 1. Ameritas, Guardian, and Humana use plan-year structures for their individual PPO products. If you enrolled on June 15, your deductible and annual maximum refresh the following June 15, not on the coming January 1.

This distinction matters for care timing. A patient on a calendar-year plan has a hard end-of-year deadline each December. A patient on a plan-year plan should watch their enrollment anniversary date and schedule accordingly. If you have a plan-year policy and you are approaching your anniversary with remaining annual maximum benefits, the same year-end planning logic applies, just on a rolling date instead of a fixed one.

Why this matters

Why it matters: Patients who assume all dental plans reset on January 1 miss the planning window on plan-year policies. If your Ameritas policy resets in June and you need a crown, timing treatment just before and just after that date can give you access to two years of major service coverage.

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PPO dental insurance

A PPO (Preferred Provider Organization) dental plan gives you the freedom to visit any licensed dentist, with the lowest cost when you choose a provider who is contracted in-network with your carrier. In-network dentists have agreed to accept reduced, negotiated fees, which lowers your out-of-pocket cost and eliminates balance billing. You can visit out-of-network dentists but typically pay more.

PPOs are the dominant form of individual dental insurance in the United States. They differ from HMOs, which restrict you to a fixed network, and from dental discount plans, which are not insurance at all. Under a PPO, you do not need a referral to see a specialist, claims are filed by the in-network dentist on your behalf, and your coverage follows you if you move or change dentists as long as your new dentist is in-network. The trade-off for this flexibility is a monthly premium plus the deductible and coinsurance on each procedure.

Why this matters

Why it matters: PPO is what most patients mean when they say "dental insurance." Understanding the PPO model, specifically the in-network discount mechanism, is the foundation for understanding every other term on this page. Every dollar you save by staying in-network is a direct result of the carrier's negotiated fee schedule.

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Preventive care

Preventive dental care includes routine cleanings (prophylaxis), periodic examinations, bite-wing and full-mouth X-rays, and oral cancer screenings. PPO plans almost universally cover preventive services at 100 percent with no deductible and no waiting period. Most plans allow two preventive cleanings per year, with some frequency limits measured by calendar date rather than calendar year.

Preventive care is not always entirely free at an out-of-network dentist. Even if your plan covers 100 percent of the allowed amount, an out-of-network dentist can still balance bill you for the gap between their full fee and the allowed amount. Additionally, some preventive-adjacent procedures, such as adult fluoride treatments, full-mouth debridement, or periapical X-rays beyond the annual limit, may have their own coverage rules and are not automatically bundled into the 100 percent preventive benefit.

Why this matters

Why it matters: Preventive care is the cheapest dental investment you can make, and under a PPO it is usually free at an in-network office. Patients who skip preventive visits to avoid cost end up paying far more in fillings and crowns. Every plan on the CoverCapy compare page covers preventive care at 100 percent with no waiting period.

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Vision add-on

A vision add-on bundles routine eye-exam and eyewear benefits with a dental PPO plan under a single monthly premium. Humana Extend includes vision in its base coverage. Most other PPO carriers offer vision as an optional rider at additional monthly cost, or through a separate standalone vision policy underwritten by a network like VSP or EyeMed.

Whether bundling makes financial sense depends on your specific eyewear costs. A bundle that covers one eye exam and $150 toward frames per year, at $8 more per month than dental alone, breaks even only if you use the full allowance. Standalone vision plans from VSP or EyeMed often provide access to larger provider networks. Compare the in-network provider list for both options in your area before deciding. Bundled dental and vision rarely covers LASIK, regardless of carrier.

Why this matters

Why it matters: If you wear glasses or contacts, adding vision to a dental plan can beat buying a standalone vision policy, but only if the bundled network includes providers near you. The CoverCapy compare page shows which plans include vision and at what cost so you can run the math in one place.

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Waiting period

A dental insurance waiting period is the number of months between your coverage effective date and the date a given tier of treatment becomes eligible for reimbursement. Preventive care has no waiting period on virtually every PPO plan. Basic services such as fillings typically have a zero-to-six month wait. Major work such as crowns and root canals typically requires six to twelve months of prior enrollment before coverage activates.

Waiting periods exist because dental insurers are managing adverse selection: the risk that someone will enroll specifically to get a crown they already need, collect the reimbursement, and then cancel. Spreading coverage over time reduces this risk and keeps premiums stable for everyone. Carriers that waive waiting periods, such as Ameritas on major work, typically charge higher premiums to offset the exposure. The tradeoff between waiting period length and monthly premium is the central calculation when choosing a plan for specific treatment you need soon.

Why this matters

Why it matters: A waiting period is the difference between a plan that helps you today and a plan that helps you in six months. If you have a cracked tooth and need a crown this week, no amount of generous coinsurance matters if major coverage does not activate for 180 days. The CoverCapy no-waiting-period guide identifies plans that cover major work from day one.

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Whitening

Teeth whitening is a cosmetic procedure and is excluded from coverage by most PPO dental plans. Carriers classify it as elective because it improves appearance rather than treating disease or restoring function. Guardian is notable for including a whitening benefit in its base coverage. Humana provides an annual cosmetic allowance that can be applied toward whitening.

In-office whitening using CDT code D9972 typically costs $400 to $600. Take-home bleaching trays with custom molds (D9973) run $200 to $400. If whitening is a meaningful consideration for you when comparing plans, the math works as follows: if Guardian charges $14 more per month than an otherwise comparable plan, the premium difference is $168 per year. If Guardian's included whitening benefit covers $212 of a $425 procedure, you are ahead by $44 on the whitening alone, before factoring in other benefit differences.

Why this matters

Why it matters: Whitening coverage is plan-specific and rare enough that most patients overlook it. If aesthetic treatment is part of your dental goals, it meaningfully narrows your plan options and can shift the premium comparison in favor of plans that include it.

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Common dental insurance questions, answered

Does "accepts my insurance" mean the dentist is in-network? +
No. A dentist who "accepts" your insurance may still be out-of-network. Out-of-network means they have no contracted fee agreement with your carrier, which means they can balance bill you for the gap between their charge and the allowed amount. Always call your carrier's member line and confirm the dentist's NPI number is in-network with your specific PPO product before you book.
What is the difference between a waiting period and an effective date? +
The effective date is when your coverage starts. A waiting period is an additional delay, measured from the effective date, before a specific tier of treatment is reimbursable. You can be covered (have an effective date) but still have a six-month wait before your crown is covered. Effective date controls enrollment; waiting period controls treatment access.
What happens when I reach my annual maximum? +
Once you hit your annual maximum, your insurance pays nothing more for the remainder of the plan year. All further dental costs that year are 100 percent out of pocket, even for procedures the plan would otherwise cover at 80 or 50 percent. The maximum resets at the start of your next plan year, typically January 1 for calendar-year plans or your enrollment anniversary for plan-year plans.
Can a new PPO plan cover a tooth I lost before I enrolled? +
Many plans exclude this through a missing tooth clause, which denies replacement coverage for teeth absent before your effective date. Some carriers are more lenient, and a small number have no missing tooth clause at all. The only reliable way to confirm coverage for a specific tooth is to request a written predetermination from the carrier before enrolling, specifying the exact CDT codes and tooth number.
Is my deductible per visit or per year? +
Dental deductibles are annual, not per visit. Once you meet the deductible for the plan year, it does not apply again until the year resets. Preventive care is usually exempt from the deductible entirely, so your cleanings and exams will not count toward it. Only restorative services, typically basic and major, apply toward meeting the annual deductible.
What does coinsurance on the allowed amount mean? +
Coinsurance is applied to the allowed amount, not to the dentist's full billed fee. If your dentist charges $1,800 for a crown and the carrier's allowed amount is $1,100, your 50 percent coinsurance is calculated on $1,100, meaning you owe $550, not $900. The $700 gap between billed and allowed is written off when you stay in-network. This write-off is the main financial benefit of using an in-network provider.

Get cover today,
see a dentist tomorrow.

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