For our English-speaking visitors

Welcome to Orthodontics Practice Amsterdam Diemen
Professional quality and perfect aesthetics

Orthodontiepraktijk Diemen is happy to help you when it comes to providing teeth adjustments for both children and adults. Intervention before problems arise in children and teenagers can help avoid serious problems later. 

Orthodontics Practice Diemen

Beautiful and well-cared for teeth give you more certainty and self-confidence. Necessary corrections to your teeth can affect the aesthetic appearance of your face for the rest of your life and contribute to good oral health. 
Adults are increasingly considering corrections to their teeth. Crooked teeth can easily be straightened. Wearing visible or transparent braces is no longer the exception. New 3D technology makes it possible to give extremely precise treatment, often in a shorter period of time.
Orthodontics Practice Diemen treats children, teenagers and adults. Our orthodontists are qualified and registered in accordance with Dutch law. 
We are ISO-NEN 2001 certified. Orthodontics Practice Diemen is continually endeavoring to improve the quality of our treatments. Our patients give us an 8.7 out of 10. There is no waiting list for treatment. You do not require a referral from your dentist for orthodontic treatment.
We offer a suitable course of treatment for all orthodontic problems.

Types of braces

Ceramic braces

Ceramic braces are transparent and are affixed to the front of the teeth. Depending on your preference, the wires can be transparent or metal. 
Throughout the treatment, the wires are adjusted to ensure that the teeth are gradually moved to the desired position. Ceramic braces are often worn by adults because they are less visible than metal braces and tongue tamers.

Metal braces

These are the familiar wire braces made of stainless steel. Wire braces are affixed to the front of the teeth. Throughout the treatment, the wires are adjusted to ensure that the teeth are gradually moved to the desired position.
Metal braces are visible and are hugely popular among teenagers. In the case of adults as well, wearing braces is widely accepted. Consider the less-visible ceramic applications.

Clear aligners by Invisalign:

Invisalign uses a range of transparent, removable aligners that are placed over the teeth. You will receive a set of aligners that are made specifically for you according to your needs. 


You can remove the aligners to eat, drink, participate in sports and to play musical instruments, but you should wear them for 22 hours a day. The desired movement of the teeth occurs in small steps in the individual rails. That is why each aligner is worn for only one to two weeks. 
You will need to come to our practice every four to eight weeks to allow us to monitor the treatment and make adjustments to the orthodontic treatment as necessary. Transparent aligners are practically invisible, so they are not noticeable when you are wearing them.

How long does orthodontic treatment take?


On average, an orthodontic course of treatment for adults lasts one to one-and-a-half years. The precise duration depends greatly on the teeth, the treatment plan and the desired results. Minor adjustments can be achieved in as little as roughly six months.


For children, orthodontic treatment is performed in various phases and depends on the developmental stage of the teeth. On average, the treatment takes two to three years, incorporating both removable and permanent braces.


Stabilization, or retention, is necessary after the treatment of both children and adults. To ensure that your new smile and the success of the treatment also remain stable in the long term, we utilize what are known as stabilization or retention splints.


There can be various causes of malocclusion. These can be congenital conditions, such as:
• Insufficient or actually too much space in the jaws: your teeth have insufficient space, as a result of which they may become crooked. Too much space leads to gaps between the teeth.
• An overbite: the upper teeth protrude over the lower teeth.
• Growth delay in one of the jaws: the lower jaw grows faster than the upper jaw or vice versa.
• Insufficient space for the teeth: there is not enough space for all the teeth, as a result of which some of them emerge crooked.
Non-congenital conditions:
• A fall: a fall resulting in the loss of teeth may cause your teeth to move, as a result of which there is no space for the remaining teeth.
• Thumb sucking: if small children suck their thumb, this may lead to protruding teeth.
Generally, crooked teeth resulting from natural or unnatural conditions can easily be treated. The orthodontist examines your teeth and draws up a treatment plan. You may need to wear braces for up to three years.

Important information

A well-informed patient and good cooperation between the orthodontist, the patient and the parents or guardian are paramount for successful orthodontic treatment. This information is therefore important if you are considering orthodontic treatment at Orthodontics Practice Diemen. Please click and read it carefully:

What are the costs of the treatment?

Orthodontic care is not included in the Dutch basic health insurance, also not for children. To be eligible for compensation, Dutch citizens must have supplemental dental care insurance.

Payment in instalments during a treatment period

Interesting fact: you do not have to pay the costs of orthodontic treatment in a lump sum. On average, the total costs for braces are between € 2,000 and € 3,500 for a course of treatment lasting one-and-a-half to three years. 


Netpoint Factoring B.V.
For those who do not pay in cash, Orthodontiepraktijk Diemen has outsourced the sending and collection of the invoices to Netpoint Factoring B.V.
Upon our request, Netpoint sends the invoices directly to the address you gave us. 

Fixed rates

All practices in the Netherlands apply Nederlandse Zorgautoriteit (Dutch Healthcare Authority, hereinafter NZa) rates regulated by law.
A course of treatment is divided into codes with fixed rates. The NZa determines the national rates for orthodontic treatments each year, so it does not matter where you live or where you receive treatment.

Dutch Citizen Service Number
Burgerservicenummer, or BSN

Are you from abroad and will you be residing or working in Amsterdam temporarily? To be able to work in the Netherlands, you need a BSN. You can also use your BSN for orthodontic treatment.
Applying for a BSN in Amsterdam
• Make an appointment by phoning the information number of the Municipality of Amsterdam: 14020
• Register in person (using your passport) at the municipal offices (Registry for non-residents) [RNI-Register Niet-ingezetenen]
• You will receive a BSN after registering
• Registering a minor or minors? Please bring their birth certificate.
Is registration mandatory?
No. If you do not have a BSN and still want treatment, you must pay in cash (debit card) after each consultation.
If you are not a citizen of the EU, you must have a valid residency permit.
1.     Make an appointment for a consultation (with or without a BSN)
2.     Intake - initial meeting
3.     Commencement of treatment
4.     Check-up appointments
5.     Finalization and stabilization
6.     Check-up (long term)

CoC 54273390 | AGB code (administrative code assigned to healthcare professionals in the Netherlands) 13072174 | ISO 9001 certified | Member of NVvO (Netherlands association of orthodontists)
Orthodontist Dr. M. Gordjestani, Phd  |  Orthodontist drs. A. T. R. Ruijs 

Despite the continuing care and attention given by the owner/practitioner to their website, he/she does not guarantee the completeness, accuracy or up-to-dateness of the data. No rights may be derived from any of the information, either in the form of text or images, on the website. The rights to photographs displayed on this website belong to:, ArtDigital and Orthodontie Amsterdam. Website produced by: Orthodontie Amsterdam 2021.