Smiling woman in outdoor setting, holding a clear aligner.

FAS Aligner System®

FAS Aligner System®  is a modern, invisible orthodontic system based on custom-made clear aligners, designed to correct the position of the teeth in a discreet, comfortable and predictable way. Unlike traditional braces, FAS® aligners are virtually invisible and can be removed whilst eating or brushing your teeth.

The FAS Aligner System® stands out for its advanced approach to orthodontic treatment, which focuses not only on the aesthetic alignment of the teeth, but also on achieving a correct and stable functional occlusion in the long term.

How do FAS® aligners work?

Treatment with the FAS® aligner system uses a series of digitally-designed clear aligners, which apply controlled pressure to gradually move the teeth into the correct position.

Each set of aligners is customised according to the patient’s dental anatomy and the orthodontic treatment plan established by the dentist. The aligners are changed progressively, with each stage designed to achieve precise tooth movements and balance the bite. 

One of the innovative features of the FAS® system is the integration of vertical control into the treatment plan. This concept enables the achievement of correct occlusion with fewer aligners and fewer intermediate adjustments. 

Book an orthodontic consultation

The benefits of FAS Aligner System®

Treatment with FAS Aligner System® shares similarities with other types of invisible braces, but is distinguished by its ability to functionally correct dental occlusion.

Understated aesthetics

FAS® aligners are transparent and almost invisible when worn. They are an ideal solution for adults and teenagers who want discreet orthodontic treatment that does not affect the appearance of their smile.

Superior comfort

The aligners are made from innovative materials and have smooth edges, designed for optimum comfort. There are no metal brackets or wires that could cause irritation.

Personalised digital treatment

Each treatment is planned digitally, which ensures a high degree of predictability in the results and allows for precise monitoring of the teeth’s progress.

Fewer alignments and fewer adjustments

Thanks to its advanced biomechanical control, the FAS® system can reduce the number of aligners required and the frequency of readjustments in certain orthodontic cases.

Improving occlusion and mastication

The FAS Aligner System® is designed not only to achieve aesthetic alignment of the teeth, but also to harmonise the relationship between the teeth and the temporomandibular joints. This can help to:

  • improved chewing;
  • the correct distribution of occlusal forces;
  • reducing discomfort associated with bite problems;
  • long-term functional stability. 

Easy to maintain

Aligners can be removed for:

  • meals;
  • brushing;
  • flossing;
  • special occasions.

This makes oral hygiene much easier compared to fixed braces. 

Find out if FAS Clear Aligners® are right for you

What dental problems can the FAS Aligner System® correct?

The FAS Aligner System® can treat a wide range of malocclusions and orthodontic problems, such as:

  • crowded teeth;
  • gaps between teeth;
  • deep bite;
  • open bite;
  • crossbite;
  • incorrect occlusion;
  • relapses following previous orthodontic treatment.

Eligibility for treatment is determined following an orthodontic consultation and a digital scan. 

Who is treatment with FAS Aligner System® suitable for?

FAS® aligner treatment is recommended for:

  • adults who want invisible braces;
  • teenagers concerned about their appearance;
  • working professionals;
  • people looking for a comfortable alternative to metal braces;
  • patients who want digital and predictable orthodontic treatment. 

How long does treatment with FAS® braces take?

The duration of treatment varies depending on the complexity of the orthodontic case. Generally, treatment with FAS® aligners can last from a few months to approximately 1–2 years.

Following the dentist’s recommendations and wearing the aligners for at least 20–22 hours a day directly affects the effectiveness and duration of treatment.

What are the benefits of FAS® aligners compared to traditional braces?

FAS Aligner System®Traditional braces 
Almost invisible Visible 
High comfort May cause irritation 
Must be removed at mealtimes Stays in place 
Easier oral hygiene More difficult to clean 
Digital planning Manual adjustments 
Superior aesthetics Metallic appearance 

Frequently asked questions about FAS Aligner System®

Is the FAS® alignment treatment painful?

The treatment may cause a slight feeling of pressure when the aligners are changed, but the discomfort is generally less than with fixed braces. 

Can I eat whilst wearing my aligners?

No. You must remove your aligners before eating or drinking coloured or hot drinks. 

How long should aligners be worn each day?

For best results, FAS® aligners should be worn for approximately 20–22 hours a day. 

Can you see the aligners when I speak?

Aligners are transparent and discreet. In most cases, they are barely noticeable. 

How do you clean FAS® mouthguards?

Braces should be cleaned daily with lukewarm water and products recommended by your orthodontist. 

Why choose FAS Aligner System®?

FAS Aligner System® are a modern orthodontic solution that combines:

  • the aesthetic appeal of invisible braces;
  • the comfort of everyday wear;
  • advanced digital technology;
  • occlusal functionality;
  • treatment predictability;
  • long-term stability of results.

With its approach focused on both aesthetics and dental function, the FAS® system offers a premium orthodontic experience for patients who want a harmonious and healthy smile. 

Book an orthodontic consultation

During the consultation, the orthodontist will assess the position of your teeth, your bite and your suitability for treatment with FAS Aligner System® and will draw up a personalised plan tailored to your needs.

DENT ESTET Reviews

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Petre Oprescu

October 7, 2026

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Foarte multumit de serviciile clinicii, personalul foarte specializat cu medici de exceptie, iar personalul auxiliar se poarta deosebit de bine cu pacientii.Recomand cu toata increderea Dent Estet.

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October 7, 2026

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Recomand. Cei mai buni medici!

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Andreea Crucila

October 7, 2026

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Am avut o experiență foarte plăcută la această clinică stomatologică. Întregul personal este amabil, atent și profesionist, iar atmosfera este una foarte plăcută și liniștită. Medicii explică fiecare etapă cu răbdare și îți oferă încredere pe tot parcursul tratamentului. Totul este foarte bine organizat, iar clinica este curată și modernă. Recomand cu drag această clinică tuturor celor care își doresc servicii de calitate și oameni cu adevărat implicați!

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J V

October 6, 2026

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Servicii excelente, nivel foarte ridicat de profesionalism!

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Andreea Lorentz

October 5, 2026

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Cea mai tare echipa de profesionisti! Recomand cu drag dr Vasile Branici, dr Adelin Radu & dr Cristina Erciulescu. Multumesc ♥️🌟💪

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Gabriela Ion

October 2, 2026

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Am fost foarte mulțumită de serviciile oferite de Dent Estet și, în mod special, de profesionalismul și atenția acordată de doamna doctor Andreea Rădeanu. Am apreciat foarte mult răbdarea, explicațiile clare și modul atent în care a decurs fiecare etapă. M-am simțit în siguranță și pe mâini bune pe tot parcursul experienței. Recomand cu drag Dent Estet și pe doamna doctor Andreea Rădeanu cat și restul echipei, tuturor celor care își doresc servicii stomatologice de calitate și o experiență plăcută!

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Denisa Roberta

October 2, 2026

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O recomand cu toată încrederea pe doamna doctor Silvia Zahari! Este un medic foarte atent, implicat și empatic. Mi-a explicat cu răbdare fiecare etapă a tratamentului, mi-a răspuns la toate întrebările și a fost mereu interesată de evoluția mea și de felul în care mă simt. M-am simțit ascultată și pe mâini bune pe tot parcursul tratamentului. Sunt foarte mulțumită de experiența avută și îi mulțumesc pentru profesionalism și grijă

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monica grigore

October 2, 2026

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Sinteti minunati! Multumim mult!

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