Tooth whitening

Indications

A smile professional tooth whitening integrates seamlessly into many treatment plans, whether as a precursor to aesthetic rehabilitation or as a standalone cosmetic procedure. With its two concentrations, A smile CP 10% and A smile CP 16%, you can tailor the indication and protocol to each clinical situation for safe, comfortable and effective whitening.

Main indications

Age-related discoloration (progressive yellowing of the teeth)
Extrinsic staining from coffee, tea, tobacco or red wine
Prior to prosthetic or aesthetic restorations (veneers, aesthetic composites)
Patient’s cosmetic request (special event, desire for renewal, loss of confidence)
Medication-related discoloration (tetracyclines), depending on severity

Recommended use depending on the situation

A smile CP 10%: overnight use – ideal for sensitive patients, first-time whitening or touch-ups
A smile CP 16%: daytime use – for patients who prefer daytime application or for more pronounced discoloration

Absolute contraindications

Under 18 years old
Pregnancy and breastfeeding
Presence of untreated decays, defective or leaking restorations, or cervical lesions
Active gingivitis or periodontal disease

Mild contraindications / precautions for use

Severe dentinal hypersensitivity
Presence of aesthetic restorations in visible areas
Unrealistic patient expectations (highlighting the importance of initial dialogue)

Clinical tip

A precise diagnosis, clear communication with the patient, and adapting the protocol to the situation are the keys to success. Initial shade recording, photographs and well-fitting trays help optimise results and enhance patient satisfaction.

CP 10% Indications

Age or diet-induced discoloration
Moderate discoloration
Touch-ups
Patients with dental sensitivity and/or anxiety
Young adults (following clinical evaluation)

CP 16% Indications

Deep or long-standing discoloration
Prior to aesthetic rehabilitation
Event-related whitening
Busy or unwilling to wear overnight patients

Clinical protocol (Technique / Procedure)

Take-home whitening remains today the reference technique for the majority of clinical cases. With A smile, you have a complete, comfortable and stable solution that you can easily integrate into your aesthetic or functional treatment plans.

Here are the recommended steps, designed to ensure maximum effectiveness with minimal sensitivity:

Initial examination and diagnosis

Conduct a full dental assessment to identify any potential contraindications: cavities, defective restorations, cervical sensitivities, prostheses, or periodontal disease.
Identify the natural teeth involved and inform the patient that existing restorations (like composites or crowns) will not lighten.

Initial evaluation

Record the initial shade (incisors/canines) using either a physical or digital shade guide.
Take preoperative photos to document the case.

Crafting the custom trays

1- Take an accurate impression of the relevant arch. Cast the model in a hard plaster or print it, making sure to include reservoirs.

Crafting the custom trays

2- Create vestibular reservoirs on the teeth to be whitened using a special light-curing resin.

Crafting the custom trays

3- Thermoform a flexible sheet of 1 mm or 1.5 mm, depending on the clinical situation, using a thermoforming device.

Crafting the custom trays

4- Trim the tray precisely at the gum line or just above using appropriate scissors.

Handing the kit to the patient

Fit the tray in the patient’s mouth to ensure it adapts properly.
Explain the appropriate protocol (CP 10% or 16%, depending on the indication and the patient’s sensitivity).
Show how to apply the gel directly from the syringe into the trays, placing a thin line of gel in the reservoirs for each tooth.
Specify the recommended wear time (CP 10%: full night; CP 16%: 1 hour/day) and the total duration (7 to 14 days).

Follow-up and guidance

Provide the patient with an information sheet outlining dietary recommendations (like avoiding coffee, red wine, tobacco), any potential temporary sensitivity, and the steps to take (see Supports).
If there is any discomfort, you can space out the applications (every other night) or use a desensitizing toothpaste.

Final evaluation

Once whitening is complete, take a new shade measurement and post-operative photos.
Compare with the initial data to assess the outcome.
Suggest an annual follow-up if needed or requested (with refills available).

Clinical cases

Consistent, visible and reliable results

A smile is used daily by many practitioners to address straightforward aesthetic requests or to support more complex prosthetic treatment plans. With its viscous formulation, high water content, balanced pH, and desensitizing and remineralizing agents, the results are not only consistently visible but also comfortable and stable over time.

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Doctor's Tip

Photograph your A smile cases before and after, record the shade with a professional shade guide, and suggest your patients an annual touch-up with refill syringes.

Please feel free to send your clinical cases (anonymized) to us through our website to help fellow practitioners make an informed choice about A smile.