Whiter teeth.
Clinical grade.
Results that last.
Professional whitening uses clinically-formulated peroxide gel at concentrations unavailable over the counter — delivering faster, more consistent results under dental supervision. Two systems are available: in-clinic chairside whitening (immediate result in one appointment) and take-home custom tray whitening (gradual lightening over 10–14 days). Both are safe. Both work. The right system depends on your schedule, sensitivity, and how quickly you need results.
Not a surface treatment.
A chemical reaction in your enamel.
Professional whitening works through a controlled chemical process. Hydrogen peroxide gel — at concentrations of 25–40% for chairside and 10–22% carbamide peroxide for take-home — is applied to the tooth surface. The peroxide molecule is small enough to diffuse through the enamel and into the dentine beneath. Inside the tooth, it breaks apart the long-chain pigment molecules responsible for the yellow and brown colour of stained teeth — converting them into smaller, colourless compounds. The result: the tooth looks lighter from the inside out.
This is why professional whitening achieves results that toothpastes and over-the-counter strips cannot: toothpastes work only on surface deposits, while professional gel penetrates the enamel to address intrinsic colour. It also explains the limitation: this mechanism only works on natural tooth enamel. Crowns, veneers, and composite fillings contain no natural pigment to break down — they stay exactly their current shade after whitening.
At Hassaan Dental Clinic, whitening is always preceded by a clinical assessment — checking for active decay, gum disease, cracked teeth, or exposed dentine that would make whitening inadvisable or uncomfortable. In smile makeover cases, whitening is always performed first, before veneer or crown shade selection — because the shade of adjacent natural teeth sets the ceiling for how light the restorations can be matched.
Professional gels use hydrogen peroxide at 25–40% (chairside) or carbamide peroxide at 10–22% (take-home) — significantly stronger than any legally available over-the-counter product. Faster, deeper results.
Whitening is preceded by examination to rule out contraindications. Gum protection is applied before gel contact. Sensitivity management is provided. Supervision makes professional whitening safer than unsupervised OTC products.
Shade assessment before and after treatment gives measurable confirmation of the result achieved. For smile makeover cases, the whitened shade becomes the reference for matching veneer and crown fabrication.
In-clinic chairside whitening delivers a visible result within one 60–90 minute appointment — ideal for events, deadlines, or patients who prefer an immediate outcome without home treatment compliance.
Custom-fitted trays with lower-concentration gel worn daily produce excellent results over 10–14 days. More comfortable for sensitivity-prone patients; more flexible for busy schedules.
In-clinic or at home —
both work. Different situations.
Chairside and take-home whitening achieve comparable final results over their respective treatment periods. The choice is based on your schedule, sensitivity profile, and how quickly you need the outcome.
Chairside whitening uses higher concentrations of hydrogen peroxide — but this does not always mean a better final result than take-home. Take-home whitening, used consistently over 10–14 days, achieves equivalent or sometimes superior final shade improvement because the extended daily contact time allows deeper peroxide penetration into dentine. Chairside treatment delivers faster visible change in a single appointment — valuable when time is the constraint. Sensitivity is lower with take-home because lower concentration carbamide peroxide releases hydrogen peroxide more slowly, giving dentinal tubules time to adapt. The combination approach — chairside for initial rapid change, then take-home trays for consolidation and future maintenance — produces the most versatile outcome.
Which stains respond —
and which need something more.
The single most important thing to understand about whitening. Managing expectations before treatment means no disappointment after. Not all dark teeth respond the same way.
Tannins from tea and coffee are among the most common causes of tooth discolouration. They bind to enamel surfaces and penetrate into dentine over time. Professional whitening breaks these pigment bonds effectively — typically producing 4–6 shade improvement in this stain type.
Chromogenic compounds from red wine, dark berries, sauces, and curries cause progressive extrinsic and mild intrinsic staining. These respond reliably to professional whitening — one of the clearest indications for whitening treatment.
Nicotine and tar from cigarettes and tobacco produce characteristic brown-yellow staining on enamel. Professional whitening addresses this effectively — though continued tobacco use after whitening will cause rapid colour regression. Stopping smoking dramatically extends results.
Teeth yellow naturally with age as enamel thins, the underlying dentine darkens, and decades of dietary staining accumulate. Age-related discolouration responds well to professional whitening — often producing the most dramatic and satisfying visible improvement.
Mild fluorosis — producing subtle white spots or light mottling — shows some improvement with whitening, particularly when the overall background shade is darker. Moderate-to-severe fluorosis responds poorly; the white spots may actually become more pronounced as surrounding enamel lightens. Veneers provide more predictable correction.
Tetracycline antibiotics taken during tooth development cause deep intrinsic grey-brown banding that is bonded into the dentine structure. Whitening produces little to no improvement on true tetracycline staining. Porcelain or zirconia veneers, or full crowns for severe cases, are the appropriate correction.
Both systems.
What happens at every stage.
Whether you choose chairside or take-home, the journey starts the same way — with an assessment that confirms whitening is clinically appropriate for your teeth.
Clinical examination confirms healthy gums, no active decay, and no exposed root surfaces that would make whitening inappropriate. Baseline shade recorded with a shade guide under natural light — photographed for before/after comparison.
A light-cured resin barrier is applied to the gums before gel contact — protecting soft tissue from chemical irritation. A lip retractor holds the lips and cheeks away from the teeth throughout the treatment, giving full access to the labial surfaces of all teeth.
High-concentration hydrogen peroxide gel is applied to all visible tooth surfaces. The gel is left in contact for 15–20 minutes per application, then removed and reapplied. Typically 2–3 applications in sequence during the appointment. A light activation unit may be used to catalyse the reaction in some protocols.
All gel is thoroughly rinsed, the gum barrier is removed, and a final shade is recorded for comparison against the baseline. A desensitising gel or remineralising paste is applied to the teeth for 5–10 minutes to reduce post-treatment sensitivity. Aftercare instructions and dietary advice are provided.
The same clinical assessment — healthy gums, no decay, baseline shade recorded. Digital scan or physical impressions are taken to fabricate custom-fitted whitening trays. Shade is photographed for comparison at the end of the treatment course.
Custom-fabricated close-fitting silicone whitening trays are tried in and adjusted to fit precisely over your teeth. The close fit prevents gel from contacting the gums and maximises gel contact with the tooth surface. Whitening gel syringes and detailed usage instructions are provided.
A small amount of gel is loaded into each tray and worn for 30–60 minutes daily (or overnight with lower concentration gel if prescribed). The schedule and concentration are customised to your sensitivity profile. Sensitivity toothpaste is used throughout the treatment period. If sensitivity increases, wear time is reduced or a rest day taken.
A review appointment confirms the achieved shade and addresses any concerns. The trays are yours to keep — additional gel can be prescribed for future top-up whitening as colour naturally regresses over time. Take-home trays are the most cost-effective long-term maintenance solution.
Professional whitening vs
every other option.
Why professional supervised whitening outperforms everything available over the counter — and where whitening itself has limits.
| Feature | ★ Chairside (Prof.) | Take-Home (Prof.) | OTC Strips | Whitening Toothpaste |
|---|---|---|---|---|
| 💪 EFFICACY | ||||
| Shade improvement | 4–8 shades | 4–8 shades over 2 wks | 1–3 shades | Surface only — minimal |
| Peroxide concentration | 25–40% H₂O₂ | 10–22% carbamide | 3–10% H₂O₂ | None |
| Penetrates into dentine | ✓ Yes | ✓ Yes | Minimal | ✗ Surface only |
| Speed of result | Same day | 10–14 days | 2–4 weeks | Months — minimal |
| 🛡️ SAFETY & SUPERVISION | ||||
| Pre-treatment assessment | ✓ Clinical exam first | ✓ Clinical exam first | ✗ None | ✗ None |
| Gum protection | ✓ Resin barrier applied | ✓ Custom tray fit | Variable — strip placement | N/A |
| Sensitivity management | ✓ Desensitising gel post | ✓ Concentration adjusted | ✗ None | Low risk |
| 📅 MAINTENANCE | ||||
| Result longevity | 6 months – 2 years | 6 months – 2 years | 1–3 months | While used daily |
| Top-up capability | Return for session | ✓ Refill gel for trays | Repeat purchase | Ongoing |
Brushing removes the pellicle — a thin protein film on enamel. Without it, pigments bind more easily. Brush first, then drink, rather than letting the pellicle absorb staining molecules.
Rinsing with water immediately after tea, coffee, or red wine dilutes chromogens before they bind to enamel — a simple daily habit that meaningfully slows colour regression.
Potassium nitrate or stannous fluoride toothpaste used before and after whitening reduces sensitivity and helps maintain enamel health during the peroxide exposure period.
In the 48 hours after chairside whitening, enamel pores are temporarily more open. Avoiding strongly coloured foods and drinks in this window prevents early colour rebind.
Scale and polish every 6 months removes surface accumulation that builds on enamel between whitening cycles — maintaining surface smoothness and clarity.
Using take-home trays for one week per year — with prescribed top-up gel — maintains whitening results indefinitely for most patients without repeated full treatment cycles.
Whitening pricing —
assessed at consultation.
Final whitening price depends on the system chosen, case complexity, and whether take-home trays are included. Confirmed at your PKR 1,000 consultation.
If you're planning a smile makeover: Whitening is always performed before veneer or crown shade selection. This is not optional — it sets the shade ceiling for all restorations. Dr. Haris sequences this correctly for every smile makeover case as part of the Digital Smile Design treatment plan. Learn about Digital Smile Design →
Important: Unit prices remain the same; final treatment cost may vary after clinical examination. Whitening price is confirmed after clinical assessment at the consultation (PKR 1,000 including OPG). Combination packages (chairside + take-home trays) are available and discussed at consultation.
Whitening questions
answered honestly.
Including the sensitivity question and the honest limits of what whitening can achieve.
Lighter teeth.
Clinically supervised.
Results that hold.
A PKR 1,000 consultation includes an OPG X-ray and clinical assessment — confirming which whitening system suits your teeth, your timeline, and your sensitivity profile. We'll tell you honestly if veneers would serve you better than whitening.
