What are orthodontic aligners and how do they straighten teeth?

Orthodontic foils, or aligners, are very thin, transparent, so-called plastic splints worn to correct irregularities in dental arrangements. This is the most modern, effective, and straightforward method of straightening teeth.

They are individually made based on a patient's dental impression. An oral examination is conducted, followed by X-rays of all the teeth and joints. It's advisable for the patient to first fix any dental issues, if needed, and to clean the dental surfaces of tartar and pigmentation. After these preliminary steps, dental impressions are taken with an oral scanner. Based on this impression, computer software virtually moves the teeth into the correct position, then calculates the exact number of foils required to correct the irregularity. We convey the number of foils, price, duration, and course of therapy to the patient. If the patient agrees, the production of the foils begins. Using modern technology, we can offer the patient a virtual preview of the final tooth result.

The biggest advantage of treatment with orthodontic foils is that the patient isn't required to come in for frequent orthodontic checks after receiving the foils. This simplicity often appeals to patients living abroad or those who, due to daily commitments, can't come in for monthly check-ups. Also, the foils are inconspicuous when worn, there's no dietary restrictions (as with braces), and it doesn't impede oral hygiene. The pressure they produce is equally distributed across all teeth surfaces in the system, thereby exerting less pressure compared to other treatments. This type of orthodontic therapy is very pleasant for the patient as there are no irritations to the mucous membranes, lips, cheeks, or gums, nor any scraping from sharp ends, as is the case with fixed orthodontic appliances.

Patients have the option to treat only one jaw (as assessed by the orthodontist) or to combine foil treatment with fixed appliances. This method allows simultaneous adjustment of one jaw with foils and the other with braces. The duration of the therapy depends on the type of irregularity. Smaller irregularities mean shorter therapy. For some, the entire orthodontic therapy can last up to three months.

Orthodontic foils are also suitable for patients who have already undergone therapy with fixed orthodontic appliances, but where a mild or greater relapse has occurred.

Can all irregularities be treated with orthodontic foils?

Almost all irregularities can be treated with foils. However, there are still a few diagnoses exclusively indicated for braces. The orthodontic specialist team at Polyclinic Bandić is one of the leading ones in the region. We offer various types of fixed and mobile orthodontic appliances, allowing us to treat all orthodontic diagnoses and meet our patients' aesthetic desires, while adjusting prices to fit any budget.

Can teeth correct themselves over time?

Unfortunately, if there isn't enough space after the age of 12, it's almost impossible for teeth to straighten on their own. As lateral teeth grow, teeth become increasingly crowded. Without space for all teeth, bigger problems arise. Patients first notice compromised aesthetics, affecting their confidence when smiling or talking, leading to reduced self-esteem. What we, as orthodontic specialists, first notice is compromised oral health. Prerequisites for oral health are properly aligned teeth and a harmonized bite; without these, functions like chewing, speaking, and maintaining oral hygiene are hindered. Regrettably, the more crowded the teeth, the harder it is to clean between them, leading to frequent cavities. Often, this results in dental treatments or even premature tooth loss. Statistically, teeth with the proper contact point established during orthodontic treatment are healthier and less prone to decay. Similarly, an improper bite can cause speech disturbances, and over many years of chewing, joint pains arise. These consequences are easier to prevent with timely orthodontic therapy. Around ages 12-14, teeth move the fastest, and orthodontic treatments finish sooner. It's essential to note that there's no age limit in orthodontics; treatment with braces or foils is possible as long as the patient has their teeth and a desire for a beautiful smile.

Will teeth remain in their new position after treatment?

Of course (they will). Just like with fixed and mobile appliances, after treatment with orthodontic foils, there's always a chance that the teeth will revert to their original position. That's why we make so-called retainers for all our patients after the therapy ends. Retainers can look just like orthodontic foils or be in the form of a thin wire fixed to the inner side of the dental arch. In any case, we ensure that teeth are secured properly to prevent further movement. What we as a clinic emphasize is that in one appointment, we offer patients the opportunity to go through several phases of orthodontic foil production.
In one appointment, it is possible to:

  • Conduct a two-dimensional X-ray of all teeth.
  • Perform a CEPH X-ray necessary for detailed analysis in resolving orthodontic therapy.
  • Photograph and take images of the oral cavity and a profile picture of the patient to monitor orthodontic therapy progress adequately.
  • Take impressions of the upper and lower jaw and make situational models.


From the beginning of therapy to the retainers, we are there to provide the best and most effective form of orthodontic treatment. The patient's only obligation is to remain motivated, wear the foils daily, and inconspicuously achieve noticeable results sooner.