If you’ve considered Invisalign treatment and have looked for London providers, it’s likely you’ve come across a wide range of boutique specialists and high-street dental chains.
In a city of vast options, the most critical consideration sometimes gets overlooked. The key thing you should look for in a provider is how they plan to move your teeth, especially if you have a history of gum disease, gum recession, or prior periodontal treatment.
For patients with more complex cases, orthodontic movement without appropriate specialist oversight can increase the risk of recession, root exposure, and long-term tooth instability.
This doesn’t mean Invisalign isn’t suitable, rather it indicates that treatment needs to be planned with periodontal health at its core.
The Problem with Standard Invisalign Planning
Clear aligner tools like Invisalign use digital planning software to map tooth movement. This is a highly effective option for many patients, but the standard planning approach revolves primarily around aesthetics, as opposed to deep alignment of the supporting roots and bones.
Key factors that may not be fully integrated into conventional planning include:
- Gum thickness (gingival phenotype)
- Bone support levels
- Root positioning within the alveolar bone
Invisalign is routinely used by general dental practitioners who have completed aligner certification and are highly skilled in managing straightforward cases.
However, when periodontal risk is present or a patient has very thin gums, treatment planning should look different. A more specialised perspective that takes gum disease or bone loss into account can set patients up for safer movement.
“As a periodontist, I often see recessions in patients with a past history of orthodontic treatment. With proper planning, this can be easily prevented by reducing the amount of expansion and controlling a root’s movements.”
For patients with a history of periodontitis, these variables can significantly affect both treatment safety and long-term stability, making a specialist-led assessment an important step before proceeding.

What Is Periodontal Risk in Orthodontic Treatment?
The ‘periodontium,’ is the part of your mouth that includes your gums, bones, periodontal ligaments, and root surfaces. It is fundamental to tooth stability.
When teeth are moved with aligners, all of these structures are required to remodel and adapt. In healthy mouths, this process tends to be more predictable.
For patients who have a history of gum disease or reduced bone support, however, using aligners requires very careful planning and more clinical oversight. Without this, risk factors increase.
Common risks include:
- If teeth move beyond the available bone envelope, gum recession can worsen
- Tooth sensitivity or root resorption can increase
- Treatment relapse can occur when underlying periodontal stability has not been achieved
- Inflammation can affect an aligner’s fit and the precision of tooth movement
- Trauma from occlusion or occlusal interferences can develop if there are issues with the bite following treatment
According to the American Academy of Periodontology, untreated or inadequately managed gum disease can lead to progressive bone loss. This has a direct impact on tooth stability and long-term treatment outcomes.
These outcomes are preventable, however in order to stop them, they need to be given ample consideration at the planning stage, rather than after complications arise.
Why a Specialist Perio-Ortho Approach Matters
Here at London Periodontics, Implants & Dentistry (LPID), Dr Leticia Casanova approaches Invisalign treatment with a lens that combines periodontal and orthodontic perspectives.
Well before she prescribes any aligner, her treatment planning includes:
- A detailed assessment of bone levels
- Evaluations of gum tissue quality
- An analysis of root positioning
- Verifying periodontal stability
When patients arrive at our clinic after experiencing gum disease, we commonly seek to treat and/or stabilise periodontal disease, project the long-term stability of a given intervention, and design tooth movement within your biological limits.
This approach ensures that orthodontic treatment:
- Protects existing gum health
- Minimises the risk of recession
- Promotes a stable outcome

Who Should Seek a Specialist Assessment?
A perio-ortho evaluation is strongly recommended if you:
- Have been diagnosed with gum disease (periodontitis)
- Notice visible gum recession
- Have experienced bone loss
- Had previous orthodontic treatment with poor retention
- Were told you’re not suitable for Invisalign due to gum concerns
- Smoke or show signs of periodontal compromise
None of these circumstances mean that Invisalign isn’t possible for you. What they instead indicate is that, like in any case, alignment needs to be done thoughtfully and safely.
Collaboration with Dentists and Referrals
At LPID, we work closely with general dentists and orthodontists across the London area to support cases where unique periodontal circumstances might play a factor in orthodontic outcomes.
While many clinicians are experienced in delivering aligner treatment, it is important to seek additional periodontal input from specialists who work collaboratively to plan for cases that involve gum disease, recession, or bone loss.
For referring clinicians, our support includes:
- Pre-treatment periodontal assessment reports
- Guidance on treatment feasibility and risk
- Co-management throughout aligner therapy
- Post-treatment periodontal monitoring to support long-term stability
This type of best-practice collaboration is about ensuring that treatment decisions are made with a full understanding of a patient’s periodontal picture. By working together, we can reduce risk and improve how predictable a treatment outcome will be.
If you are a dental professional seeking a perio-ortho partnership, you can reach out here to refer a patient to LPID.
Taking the Next Step
For patients who are considering Invisalign and have concerns about gum health, you have come to the right place. Remember that the first and most important step is getting an accurate diagnosis, and then a well-considered treatment plan.
Straight teeth and healthy gums are not competing goals. Rather, they work in tandem to bring about the same outcome of a healthy and assured smile.
If you’re wondering about how suitable and safe Invisalign would be for you, book a specialist consultation with LPID today.

Dr Leticia Casanova
Co-Founder & Periodontist
GDC number: 182582

Leticia Casanova
Co-Founder & Periodontist
GDC number: 182582
Dr Casanova graduated in dentistry from the University of Oviedo, Spain in 2006. Following a period of work in private practice she moved to New York where she completed 2 years full-time training in Periodontology at New York University College of Dentistry. She completed her PhD in Medicine in 2012, where she investigated the links between Periodontal disease and systemic diseases such as Diabetes.
Since arriving in the UK in 2009 Dr Casanova has restricted her practice to periodontology and implant dentistry offering a full range of periodontal treatments including regenerative and cosmetic procedures, microsurgical periodontal plastic surgery (gum surgery), implant dentistry and bone augmentation procedures. She is a Specialist Clinical Teacher at KCL Guy’s Hospital.
Dr Casanova is a member of the British Society of Periodontology, American Academy of Periodontology, Royal Society of Medicine and the Association of Dental Implantology UK. She regularly attends National and International conferences and publishes and presents her work in peer reviewed dental journals and dental meetings.


