How many shades whiter will I get?

In-clinic professional: 6-8 shades typical, up to 12 for heavy staining. Custom tray: 4-6 shades. OTC strips: 2-4 shades. Final result depends on starting shade, type of staining, and consistency of treatment.

Will my teeth stay whitened forever?

No. Stain accumulates over time from coffee, tea, wine, tobacco, normal aging. In-clinic: 12-24 months before noticeable re-staining. Custom tray: 12-18 months. OTC: 6-12 months. Maintenance gel use extends results indefinitely.

Will whitening damage my enamel?

No, when done professionally. Modern professional formulations are calibrated to be enamel-safe. Some patients experience temporary sensitivity (1-3 days) but no documented enamel damage. The Amorphous Calcium Phosphate post-treatment paste actively re-mineralises enamel.

Can I whiten if I have crowns or veneers?

You can whiten the natural teeth that surround them, but the porcelain itself is colour-stable. Plan for harmony — whiten back teeth before designing front-tooth veneers, or whiten back teeth periodically to maintain match with existing veneers.

Should I whiten before or after orthodontics?

After. Whitening before braces means uncovered enamel near the bracket area whitens but the area under the bracket doesn't. Whiten after braces are removed for uniform result.

What about charcoal toothpaste, oil pulling, "natural" whitening?

Generally ineffective and sometimes harmful. Charcoal toothpaste is abrasive and can dull enamel. Oil pulling has minimal whitening effect. "Natural" remedies that promise whitening usually deliver minimal real change. For results, use clinically-tested professional methods.

In-Clinic vs At-Home Teeth Whitening

Teeth whitening has three main delivery formats. They differ dramatically in concentration, supervision, speed, and final result. This guide explains which approach suits which patient.

Quick Decision Matrix

When In-Clinic Whitening Is the Right Choice

Choose professional in-clinic whitening when:

You want fast results — Single 60-90 minute appointment delivers full result.

You have an event — Wedding, professional milestone, public appearance with hard deadline.

You combine with veneers — Whiten natural back teeth on day 1 of veneer trip, then design veneers to match.

You have moderate to heavy staining — Higher peroxide concentration delivers more dramatic shade change.

You want predictable supervision — Dentist monitors gum and tooth response during application.

WeCare uses Philips Zoom!® WhiteSpeed (25% hydrogen peroxide with LED activation) and BriteSmile® (15% with blue-light activation). Both deliver 6-8 shades in a single session.

When Custom Tray Whitening Is the Right Choice

Choose at-home professional with custom trays when:

You want professional results without the in-clinic appointment — Convenient if you cannot easily visit a clinic.

You want maintenance flexibility — Custom trays last for years; touch-up gel kits are inexpensive and ongoing use is convenient.

You have sensitive teeth — Lower peroxide concentration is gentler than in-clinic for sensitive patients.

You want gradual results — Some patients prefer the gradual change vs dramatic single-session result.

WeCare can fit custom trays during your clinic visit and send you home with a 2-3 week supply of professional gel.

When OTC Strips Are Acceptable

Over-the-counter whitening strips (Crest Whitestrips, etc.) are acceptable when:

Your goal is mild brightening only — 2-4 shades is sufficient.

You are doing maintenance — Annual touch-up after professional whitening.

Cost is the dominant factor — OTC strips are 1/10th the cost of professional whitening.

OTC strips have lower peroxide concentration so the result is more limited and slower. They work for what they are; they don't deliver in-clinic results.

Combination Approach (Recommended for Best Results)

Many patients use a combination:

1. Professional in-clinic whitening establishes the brightest realistic result (single appointment, dramatic improvement)

2. Custom take-home trays maintain results long-term (occasional 1-2 night use to prevent re-staining)

3. Daily whitening toothpaste for ongoing surface stain prevention

This combination delivers the best total result with manageable maintenance.

What Whitening Cannot Do

Important limits to understand:

Cannot whiten porcelain veneers or crowns — They are colour-stable. Whitening only affects natural tooth structure.

Cannot whiten tetracycline staining — Intrinsic staining requires veneers, not whitening.

Cannot whiten fluorosis spots — Sometimes lightens slightly but doesn't eliminate.

Cannot whiten dead/discoloured teeth — Internal bleaching of root-canal-treated teeth is a different procedure.

Cannot whiten beyond your natural maximum brightness — Each tooth has a limit set by its mineral composition.

For patients with these conditions, veneers are the right answer.

Sensitivity Considerations

All whitening can cause temporary sensitivity (cold drinks, sweet foods) during and 24-48 hours after treatment. Sensitivity profile:

In-clinic — Mild for most patients. Philips Zoom!® WhiteSpeed includes Amorphous Calcium Phosphate (ACP) post-treatment paste that re-mineralises enamel and reduces sensitivity.

Custom tray — Mild for most patients. Lower concentration is gentler.

OTC strips — Mild to moderate. Some patients experience more sensitivity due to one-size-fits-all gel placement (gel touching gums causes more sensitivity than custom tray placement).

Patients with very sensitive teeth: start with custom tray (lowest concentration) and use desensitising toothpaste (Sensodyne) for 2 weeks pre-treatment. WeCare can prescribe desensitising treatment if needed.

What WeCare Recommends

For most patients seeking dramatic improvement: single in-clinic Philips Zoom!® session + take-home tray maintenance kit. This delivers the best initial result and longest-lasting maintenance.

For patients with sensitive teeth: custom tray approach with professional gel.

For maintenance after Hollywood smile: annual or biennial in-clinic whitening of back teeth + custom tray for at-home touch-ups.

WhatsApp +90 551 086 83 68 with smile photos for a treatment plan including the right whitening approach for your case.

In-Clinic vs At-Home Whitening — Choosing the Right Approach

Quick Decision Matrix

When In-Clinic Whitening Is the Right Choice

When Custom Tray Whitening Is the Right Choice

When OTC Strips Are Acceptable

Combination Approach (Recommended for Best Results)

What Whitening Cannot Do

Sensitivity Considerations

What WeCare Recommends

Frequently Asked Questions

Related Treatments

More Comparisons

Ready to start your treatment?