Top 10 Frequently Asked Questions about Invisalign — Answered by LP CLINIC Experts
- LP CLINIC Cascais
- 4 days ago
- 2 min read

Invisible orthodontics has become one of the most sought-after options for those who want to straighten their teeth discreetly and effectively. At LP CLINIC, we receive patients with questions about Invisalign every day — so we have gathered together the 10 most frequently asked questions, with clear, objective answers based on our clinical experience.
1. What exactly is Invisalign?
Invisalign is a system of clear, removable, custom-fit aligners that replace traditional metal braces. Each aligner is custom-made for the patient, gradually moving the teeth into their ideal position.
2. Is Invisalign treatment as effective as braces?
Yes, in most cases. Invisalign can successfully treat mild to moderately complex cases of tooth misalignment. In some very severe cases, your orthodontist may recommend other options.
3. How long does Invisalign treatment last?
The average duration varies between 6 and 18 months, depending on the complexity of the case. In simpler treatments, there may be visible results in just a few months.
4. How many hours a day should I wear the aligners?
Ideally, 22 hours a day. They should only be removed to eat, drink (except water) and brush your teeth.
5. Is it painful?
The aligners apply a gentle, controlled force to your teeth. There may be some slight discomfort for the first few days with each new aligner, but it is generally well tolerated.
6. Can I eat and drink with the aligners in?
No. To prevent staining, wear and distortion, aligners should be removed when eating or drinking anything other than water.
7. How often do I need to change my aligners?
As a general rule, every 7 to 14 days, depending on the plan determined by the orthodontist. Each new aligner represents a new stage in the movement of the teeth.
8. Does Invisalign affect speech?
In the first few days, you may notice a slight change in speech, like a small "whisper". However, the brain adapts quickly and, within a few days, you will speak normally.
9. Is it necessary to have frequent consultations?
Yes, but less often than with traditional braces. Appointments are usually monthly or bimonthly to monitor progress and provide the next aligners.
10. How much does Invisalign treatment cost?
The price depends on the complexity of the case. During the first consultation, we perform a 3D simulation with the iTero scanner, where the patient can see the predictable before and after.

✅ Conclusion
Invisalign combines technology, comfort and aesthetics in a modern solution for dental alignment. If you are considering this treatment, book an appointment at LP CLINIC for a personalized assessment and discover your new smile!
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