Orthodontic Retainers After Braces – Why Careful Research Matters
At South Coast Orthodontics, our ethos revolves around a relentless pursuit of excellence in orthodontic care. As the lead orthodontist, I am deeply invested in the continuous growth and advancement of our practice, always seeking to integrate the latest developments and innovations in orthodontics into our patient care protocols.
Academically, my days of university may be over, but my days of learning will never be. I remain committed to staying informed through scientific journals, continuing education courses, and professional blogs written by leading experts in orthodontics.
One of my favourite resources is the orthodontic blog written by Dr Kevin O’Brien and Professor Padhraig Fleming, which recently featured the following article discussing modern retainer technology:
https://kevinobrienorthoblog.com/a-cad-cam-nitinol-bonded-retainer-has-a-big-failure-rate/
Their article highlights an important issue in modern orthodontics: the reliability of new CAD/CAM retainer technologies.
Why Orthodontic Retainers Are Essential After Braces
The significance of orthodontic retainers in maintaining the results of orthodontic treatment has received increasing attention in recent years.
Once braces are removed, teeth naturally have a tendency to drift back toward their original positions, a phenomenon known as orthodontic relapse.
Retainers play a crucial role in preserving the alignment achieved during orthodontic treatment.
There are two primary types of orthodontic retainers used after braces:
Fixed Retainers
Fixed retainers are bonded to the back surfaces of the teeth and remain in place permanently unless removed by an orthodontist.
They are particularly effective in maintaining alignment in the lower front teeth, which are highly susceptible to relapse.
Removable Retainers
Removable retainers provide flexibility for patients, as they can be taken out during meals or while cleaning the teeth.
However, removable retainers rely heavily on patient compliance, as they must be worn consistently to maintain orthodontic results.
Both retainer types serve important roles in ensuring that the investment in orthodontic treatment delivers lasting results.
The Emergence of CAD/CAM Nitinol Retainers
In recent years, advancements in orthodontic technology have introduced CAD/CAM nitinol retainers, such as the product Memotain.
These retainers are digitally designed and manufactured using advanced computer-aided design and manufacturing systems, representing a new generation of retention technology.
However, innovation must always be carefully evaluated through rigorous clinical research before widespread clinical adoption.
A Study Comparing Memotain and Ortho-Flex Tech Retainers
A United Kingdom-based research team conducted a comparative study to evaluate the effectiveness of Memotain retainers versus Ortho-Flex Tech retainers in both the upper and lower dental arches.
The purpose of the study was to compare several important clinical outcomes, including:
- Stability of tooth alignment
- Failure rates of retainers
- Patient comfort and satisfaction
- Risk of orthodontic relapse
Participants in the study were patients who had recently completed treatment with fixed orthodontic appliances.
In the trial:
- Memotain retainers served as the intervention group
- Ortho-Flex Tech retainers were used as the comparison group
The primary outcome measured was dental relapse, while secondary outcomes included retainer failure rates and patient comfort.
Unexpected Findings – Higher Failure Rates
Despite being a well-designed and carefully conducted trial, the study had to be terminated prematurely.
The reason was concerning.
Researchers observed a significantly higher failure rate among Memotain retainers, particularly in the maxillary (upper) arch, when compared with Ortho-Flex Tech retainers.
Because of this unexpectedly high failure rate, the research team stopped enrolling new participants to prevent potential harm and ensure patient safety.
The authors concluded that Memotain retainers presented a higher risk of failure in the upper arch, raising important questions about the reliability of this new technology.
Why Research Matters Before Adopting New Technology
These findings highlight a critical principle in modern orthodontics:
Not every new technology is automatically better.
While innovation is essential for progress, new devices must undergo thorough clinical testing and evaluation before being widely adopted into routine patient care.
The results of this study demonstrate the importance of evidence-based decision-making in orthodontic treatment.
Although the higher failure rates raise concerns, they also provide valuable insight into areas where retainer technology still requires further development.
Why South Coast Orthodontics Continues to Use Ortho-Flex Tech Retainers
At South Coast Orthodontics, we proudly continue to use Ortho-Flex Tech retainers, and we currently have no intention of switching to Memotain retainers.
Ortho-Flex Tech retainers represent a proven and reliable solution for maintaining orthodontic treatment outcomes.
These retainers offer several advantages for patients, including:
- High levels of customisation
- Excellent durability
- Comfortable fit
- Strong long-term stability
- Discreet appearance
By providing a precise, customised fit, Ortho-Flex Tech retainers help ensure that teeth remain in their corrected positions after braces are removed.
Supporting Long-Term Orthodontic Success
Our continued use of Ortho-Flex Tech retainers reflects our unwavering commitment to delivering safe, reliable, and evidence-based orthodontic care.
At South Coast Orthodontics, our goal is to empower patients with long-lasting orthodontic results and provide them with the tools needed to maintain their new smiles with confidence.
By selecting retainers that have demonstrated strong clinical reliability, we help ensure that patients enjoy the benefits of their orthodontic treatment for many years to come.
Our Commitment to Continuous Learning
At South Coast Orthodontics, we remain steadfast in our mission to advance our practice through ongoing education, research awareness, and thoughtful integration of proven technologies.
Our patients deserve the highest calibre of orthodontic treatment, and we are committed to continuously refining our methods to deliver the best possible care.
Yours truly,
Dr Kamal Ahmed
P.S. Why should you never throw grandpa’s false teeth at a vehicle?
You might denture car.
