Convenient for visits outside school and work hours.
Orthodontics
Registered Orthodontist Dr. Jing Guo combines academic expertise with a personal approach — and is one of only five official Invisalign-certified mentors in the Netherlands.
Meet Your Orthodontist
Registered Orthodontist in the Netherlands (BIG 19918762902). PhD in Orthodontics (2011). Invisalign Diamond Apex Status (Europe top 1%) and one of only five official Invisalign-certified mentors in the Netherlands. Member of NVvO, KNMT, AAO, EOS, and EAS. Speaks Dutch, English, and Chinese.
Dr. Guo completed her dental degree in 2006, followed by a five-year full-time specialisation in orthodontics with a Master's and Doctoral degree. She was awarded her PhD in 2011 for research on secondary bone grafting for alveolar cleft in children. From 2011 to 2015 she worked at ACTA in Amsterdam before establishing her own practice in Hoofddorp, Haarlemmermeer. She is a registered specialist in the BIG-register (19918762902).
As one of only five official Invisalign-certified mentors in the Netherlands, Dr. Guo provides one-to-one mentorship to other orthodontists on Invisalign treatment plans for complex cases. She combines the latest academic insights with a personal, step-by-step approach — creating healthy, functional, and beautiful smiles for for all ages.
Invisalign aligners
A removable, nearly invisible treatment option planned digitally and suitable for many mild to complex cases when worn consistently.
Fixed braces
Ceramic or metal braces remain a strong option when detailed control, tooth rotations, or more demanding biomechanics are required.
Early treatment for children
For some growing children, early orthodontic guidance can help create space, influence jaw development, or reduce the risk of more difficult problems later.
Treatment for adults
It's never too late. Discreet treatment options for a confident smile at any age.
Patient Information for Orthodontics
Alongside treatment planning, we want you to understand how quality is safeguarded and what to do if something breaks or irritates your appliance.
Quality Standards
How specialist registration, certified practice standards, and ongoing training support safe orthodontic care.
View quality standards →Emergency Help
Practical advice for loose brackets, poking wires, broken retainers, and removable appliances.
Get emergency help →Advanced Techniques
Dr. Guo specialises in mini-screws, uprighting impacted wisdom teeth, and minimal tooth movement techniques — turning complex cases into less invasive solutions and helping avoid surgery when possible.
Related: Accelerated Orthodontics (PAOO)
In collaboration with Dr. Wu, we offer Periodontally Accelerated Osteogenic Orthodontics (PAOO) — a technique that can speed up tooth movement by up to 5x. This combined approach is ideal for complex cases.
Learn about PAOO with Dr. Wu →
Orthodontics across the Haarlemmermeer region
DenCos is one of the largest and most experienced orthodontic practices offering Invisalign in the Haarlemmermeer region (Abbenes, Badhoevedorp, Beinsdorp, Cruquius, Halfweg, Hoofddorp, Lisserbroek, Nieuw-Vennep, Rijsenhout, Spaarndam, Vijfhuizen, Zwaanshoek, Zwanenburg) and surrounding areas such as Roelofarendsveen, Haarlem, and Aalsmeer.
View directions and travel info →Ready to discuss your orthodontic options?
We welcome patients from Hoofddorp, Haarlemmermeer, Haarlem, Amsterdam, and surrounding areas for specialist orthodontic assessment and treatment planning.
We speak Dutch, English & Chinese
New patients can register directly using the form below:
Dental Referral
We work closely with referring dentists across the region. Receive written feedback after consultations, and your patient returns to you for routine care after specialist treatment.
View referral information →