Invisalign® in Bellingham

For most patients, treatment takes between 6 and 18 months. The exact timeline depends on how complex your case is and — most importantly — how consistently you wear your aligners. Patients who wear them 20 to 22 hours a day, every day, finish fastest. Patients who skip wear time routinely will stretch their treatment significantly, often requiring extensive refinements. Dr. Knudson will give you a realistic estimate at your consultation.

 20 to 22 hours per day, every day — no exceptions if you want the best result. The bone cells responsible for permanent tooth movement need a near-continuous signal to do their job. If you skip a day, those cells shut down and it takes another 10 to 14 hours of wear before they even restart. That means a full day of missed wear could cost you several days of progress. The only times your aligners should be out are for eating, drinking anything other than plain water, and brushing your teeth.

Yes — with one simple rule. Remove your aligners every time you eat or drink anything other than plain still water. Most beverages (including coffee, tea, juice, sports drinks, and alcohol) contain sugar, acid, or colour that gets trapped between the aligner and your tooth surface, causing staining or enamel damage. Once you’ve eaten, brush and floss before reinserting your trays — or at minimum, rinse thoroughly. This habit also keeps your aligners from developing odour.

Attachments are small tooth-coloured ‘dots’ of composite resin — the same material used in white fillings — bonded to certain teeth. They give the aligner a physical anchor point to perform movements it simply cannot do with a smooth surface alone: rotating teeth, moving them up or down, or tipping them at precise angles. Attachments are not optional for cases that require them — they’re essential to getting a great result. They’re placed at your second treatment appointment and removed gently at the end of treatment. Most patients find them far less noticeable than they expected.

Yes, but there is an additional fee and treatment will pause until they are reapplied. The templates used to reattach them need to be ordered from Invisalign®, which takes time, so this needs to be planned well in advance of your event. This does not affect your eligibility for refinements later.

IPR stands for Interproximal Reduction — what Dr. Knudson sometimes calls the ‘sandpaper treatment.’ It involves removing a tiny fraction of a millimetre of enamel from the contact surfaces between specific teeth (the sides where teeth touch each other). This is done with ultra-fine diamond-coated strips or discs, requires no anaesthetic, and is often removing filling material or crown porcelain rather than tooth structure. About half of orthodontic patients need some degree of IPR. It’s done to allow the upper and lower teeth to meet in proper bite alignment after straightening — and sometimes to reduce those dark triangular gaps between teeth near the gumline. Dr. Knudson only ever removes the minimum necessary.

Avoid non-steroidal anti-inflammatory drugs (NSAIDs) during treatment. This includes ibuprofen (Advil, Motrin), aspirin, naproxen (Aleve), and their generics. These medications suppress the inflammatory process that allows bone to remodel and teeth to move permanently. For pain relief — especially when breaking in a new set of trays — use Acetaminophen (Tylenol or generic) instead. A helpful tip: take Tylenol about 30 minutes before bedtime on the night you change to a new aligner set, insert the new trays, and sleep through the peak adjustment period.

Don’t panic — but do act quickly. Try moving to your next set in the series. If it seats fully and comfortably after a couple of days of wear, you can continue. If it doesn’t seat properly, go back to your previous aligner and call the office. Replacement aligners can be ordered, though there is a fee. This is why Dr. Knudson recommends two carrying cases — one for home, one for your bag — and always storing your aligners in a case rather than a napkin at the dinner table (where they have a habit of being thrown away).

Absolutely yes. Do not throw away used aligners. Clean them by soaking for 10 minutes in a solution of one tablespoon of bleach per cup of water, rinse thoroughly, let dry, and store in a labelled plastic bag. Old aligners can be invaluable if you need to back up in treatment due to a stubborn tooth, if you have a medical situation that forces a pause in wear, or — most commonly — if you don’t wear your retainers consistently after treatment and your teeth drift. In that scenario, you may be able to work back through your old aligner series to straighten your teeth again at no additional cost.

Dr. Knudson monitors progress at every check-up appointment. If a tooth isn’t tracking properly — not following the planned movement — he has several tools to get things back on track: modifying an aligner, ordering refinement trays, or adjusting contact points between teeth. The most common reason for tracking issues is insufficient wear time. Arrive at every appointment wearing your current aligners so Dr. Knudson can see exactly how the trays fit your teeth at that point in treatment.

Refinements are additional aligner sets manufactured after your initial series to fine-tune tooth positions. For the majority of cases — especially where the patient has been compliant with wear and appointments — refinements are included in Dr. Knudson’s treatment fee. Cases involving very significant movement often need some degree of refinement regardless of compliance, and that’s accounted for. Patients who are persistently non-compliant with wear or who miss repeated appointments may incur an additional monitoring or refinement fee.

Yes — and the honest answer is: for the rest of your life, or for as long as you want to keep your teeth straight. Orthodontic relapse (teeth drifting back toward their original positions) is a natural consequence of the fibrous gum tissue retaining a ‘memory’ of where teeth used to be. Even decades after completing treatment, some tendency remains. Dr. Knudson recommends Invisalign® retainers for most patients — essentially aligner-style trays worn at night — because they’re comfortable, affordable, and effective at correcting small shifts before they become bigger ones. Roughly half of adult patients at Envisia had orthodontic treatment before and didn’t wear their retainers. The treatment works. The retainer is what locks it in.

Invisalign® Express 5 and Express 10 are limited-series products that provide 5 or 10 aligner sets respectively — suitable for very minor corrections. They’re available at Envisia at a slightly reduced fee, though the savings compared to full treatment are modest (roughly $300–$500) because Dr. Knudson’s full treatment pricing is already significantly below the regional average. The risk with Express products is that if more correction is needed than the series provides, upgrading to full treatment adds $1,000–$1,200 to your total cost. Dr. Knudson will tell you honestly whether Express is genuinely appropriate for your situation.

You have options. Dr. Knudson can transition you into retention if you’re happy with your progress, arrange a formal case transfer to an Invisalign® provider in your new location, or allow you to complete your remaining aligners independently (wearing each set for three weeks instead of two). You can also pause active treatment, retain your progress with nighttime-only wear, and return to Envisia periodically as your schedule allows. Because Envisia’s fees are already competitive, most patients find they’re still money ahead even if a new provider charges a completion fee.

Yes. Consultations at Envisia Lifestyle Dentistry are free for new Invisalign® patients — and for friends or family you refer. If a referral goes ahead with treatment, they receive special pricing on their package. No commitment required at the consultation — just an honest conversation about your smile goals and what’s realistically achievable.