Key points
- A concern about colour calls first for whitening; about position, for orthodontics; about shape, for composite or a veneer.
- Starting with what removes nothing from the tooth can limit the need for veneers, or even avoid it.
- Order matters: align before preparing, and whiten before choosing the shade of a restoration.
What bothers you: the colour, the position or the shape?
This is the first question the examination asks. Teeth that are yellow but well shaped, teeth that are a good colour but crowded, teeth that are small or worn: three situations, three answers. Many smiles combine several concerns, and the analysis separates them.
When is whitening enough?
When what bothers you is the colour of natural teeth, and there is nothing wrong with their shape. Teeth whitening removes nothing from the tooth.
In Europe, whitening products containing more than 0.1% and up to 6% hydrogen peroxide may be sold only to dentists. The first application of each course of treatment is carried out by the dentist or under their direct supervision, and these products are not to be used on anyone under 18.
Temporary sensitivity is common, whatever the technique; it is managed by adjusting the pace of treatment.
Its limits: existing crowns, veneers and composites do not change colour, and some deep discolouration responds poorly to it.
When should you think about orthodontics?
When the teeth are out of position: crowded, set back, too far forward, separated by gaps. Veneers can mask a slight misalignment, but a veneer does not move a tooth: on a tooth that sits forward, masking means removing more enamel.
Aligning first often means less preparation, and sometimes no need for veneers at all. Dr Haccoun does not carry out orthodontic treatment himself: when alignment is indicated, it is entrusted to an orthodontist.
It is not always the option chosen: orthodontics takes time. In one of the practice’s cases, alignment had been suggested before eight veneers were made; the patient did not want it, and the plan was built around the existing position of the teeth.
When do veneers become the right answer?
When the shape or shade cannot be corrected any other way: a tooth that is too short or too narrow, a worn edge, discolouration that whitening is not enough to correct, old restorations that need redoing. For a small addition of volume, composite may be enough, without preparation.
In what order, if several steps are needed?
Align, then whiten, then restore: this is the most common order, because each step changes what the next one requires.
After whitening, the shade continues to change for a while, and bonding to freshly whitened enamel is less effective, as laboratory studies show. That is why the shade of a restoration is chosen, and the restoration bonded, only after a waiting period.
A case presented on the ceramic veneers page follows this logic: three weeks of whitening first improved the overall shade; the canines then blended in well enough not to need treatment, and four veneers were enough.
Frequently asked questions
Can teeth that already have veneers be whitened?
Whitening does not change the colour of veneers. The natural teeth around them can be whitened, but the contrast with the veneers may then show: it is better to whiten first.
Can aligners replace veneers?
For a problem of position, often. For shape or shade, no: they move the teeth without changing them.
Should you always start with whitening?
No: only if colour is part of what bothers you, or if visible restorations are planned afterwards.
References
- Council Directive 2011/84/EU of 20 September 2011 (cosmetic products, Annex III: hydrogen peroxide). Official Journal of the European Union, L 283, 29 October 2011, p. 36-38. These rules now appear in Annex III to Regulation (EC) No 1223/2009 on cosmetic products.
- Aidos M, Marto CM, Amaro I, et al. Comparison of in-office and at-home bleaching techniques: an umbrella review of efficacy and post-operative sensitivity. Heliyon. 2024;10(3):e25833. doi:10.1016/j.heliyon.2024.e25833
- Binalrimal S. Shear bond strength of a universal adhesive to enamel at immediate, 7-day and 14-day intervals after 40% hydrogen peroxide bleaching: an in vitro study. Bioengineering. 2026;13(9):1038. Laboratory study: bond strength to enamel was still lower than to unbleached enamel fourteen days after treatment. doi:10.3390/bioengineering13091038

