Can You Get a Tooth Gem If You Have White Spot Lesions?
Tooth gems are a fun, low-commitment way to add a little sparkle to your smile. But if you've noticed chalky white patches on your teeth — often after braces — you might be wondering whether it's safe to have a gem applied over them. It's a smart question to ask, and the honest answer is: it depends on the spot. Here's what white spot lesions actually are, when a gem is fine, when it's better to wait, and what you can do about the spots themselves.
This article is general information, not dental advice. Anything on your own teeth is best assessed by your dentist.
First, what is a white spot lesion?
A white spot lesion (WSL) is an area of enamel that has lost some of its mineral content, giving it a chalky, matte, opaque look compared to the glossy enamel around it. They're extremely common — some dental practices describe them as essentially the very beginning of a cavity that never fully formed, where the enamel has demineralised and taken on that chalky appearance.
The single biggest cause is braces. Studies show up to 50% of patients can have white spot lesions after their braces come off, usually appearing as a little ring or halo where each bracket sat — because that spot was the hardest to keep clean, and plaque built up around it.
White spots can also come from other things, like developmental enamel differences (fluorosis or hypomineralisation), so if you're not sure what's causing yours, that's a dentist conversation.
Why do teeth sometimes look chalky during a gem application?
Worth clearing this one up, because it causes confusion. During a tooth gem application, the tooth is isolated and dried and often etched with a mild gel so the adhesive grips.
Both steps temporarily make enamel look chalky and white — dry enamel loses its natural translucency, and freshly etched enamel goes frosty. This is completely normal and reverses within minutes to hours once saliva returns. We cover exactly why this happens in more detail in this article on the temporary whitening effect.
So a chalky look during a procedure isn't a white spot lesion. A chalky patch that's still there when the tooth is wet and the gem is done is the kind worth looking at.
So — can you get a gem with white spot lesions?
Here's the practical breakdown a good technician — or you, applying at home — should follow:
If the spot is active (chalky, matte, rough to feel, often near the gumline), it's actively losing mineral. A gem shouldn't be bonded directly onto it. Two reasons: the bond to weakened enamel is less reliable, and the gem plus adhesive can trap plaque right on a spot that's already vulnerable — potentially making it worse and hiding it from view so it progresses unnoticed.
If the spot is arrested/inactive (smooth, shinier, hard when dry), the risk is much lower. A gem placed nearby — on sound enamel with a clear margin around the spot — is usually fine if your hygiene is good.
If it might be an actual cavity, that's a stop sign: see a dentist first, no gem.
The safe rule of thumb: a gem belongs on healthy enamel, with a clear margin around any lesion, and only after the spots have been checked. Skipping one application protects your teeth far more than a gem that fails or hides a spot that needed attention.
What can you do about the white spots themselves?
This is where the research gets interesting — and where different experts weigh things differently.
Remineralising toothpastes and creams
Products containing nano-hydroxyapatite (n-HAp) or CPP-ACP (casein phosphopeptide-amorphous calcium phosphate, sold as MI Paste or Tooth Mousse) work as reservoirs of calcium and phosphate, feeding those minerals back into weakened enamel.
The evidence here is genuinely promising for early lesions:
- A 2022 study found toothpaste with nano-sized hydroxyapatite has the potential to remineralise an incipient (early) white spot lesion.
- A randomised clinical trial found a nano-hydroxyapatite toothpaste actually outperformed a fluoride toothpaste for the amount of remineralisation and reducing lesion size.
- A 2024 systematic review concluded the effect of nano-hydroxyapatite is potentially promising, while noting the available evidence is still limited.
- CPP-ACP products appear to help early lesions regress.
The important caveat: remineralising rebuilds mineral content and can reduce the whiteness, but often won't fully erase an established, visible spot. Think improve and stabilise, not guaranteed to disappear.
The more skeptical, in-office view
Not everyone rates the at-home products highly. Some practising dentists argue non-invasive methods don't work consistently enough to be useful, pointing to a literature review (Kalha, 2013) that found the effectiveness of remineralising agents for post-orthodontic white spots lacks strong evidence. For anything sizeable, many practices prefer removal via microabrasion, and for many spots, resin infiltration, composite fillings, or veneers to address them cosmetically.
A 2018 systematic review in JADA found 5% sodium fluoride varnish — applied at the dentist — is one intervention that reliably improves white spots after orthodontics.
A simple, tiered plan
- Faint, early spot? Start conservative: a nano-hydroxyapatite or fluoride toothpaste, or CPP-ACP paste, plus better brushing at the gumline and cutting back on frequent sugary or acidic drinks. Give it a few months. Ask your dentist about fluoride varnish, which has the strongest evidence.
- Established, obvious, or many spots? That's dentist territory — resin infiltration, microabrasion, or composite. Toothpaste alone won't erase these.
- Thinking about a gem? Let any active spot stabilise first. A gem goes on healthy enamel, never on an active lesion.
The bottom line
You can often still enjoy a tooth gem if you have white spot lesions — but placement matters. A gem should sit on healthy enamel with room around any spot, active lesions should be given time to settle (and stubborn ones assessed by a dentist), and the spots themselves respond best to a mix of remineralising care for early ones and professional cosmetic treatment for the rest. When in doubt, a quick dental check-up is always the safest first step before adding the sparkle.
Frequently asked questions
What is a white spot lesion?
A white spot lesion is an area of enamel that has lost some mineral content, giving it a chalky, matte appearance compared to the surrounding glossy enamel. It's essentially the earliest stage of demineralisation, most commonly seen after braces are removed.
Can I get a tooth gem if I have white spot lesions?
It depends on the spot. Active lesions (chalky, rough, still demineralising) shouldn't have a gem bonded directly onto them. Inactive or arrested spots carry much lower risk, and a gem placed nearby on healthy enamel with a clear margin is usually fine. If a spot might be an actual cavity, see a dentist before applying anything.
Why do my teeth look chalky during a tooth gem application, even without white spot lesions?
Isolating and drying the tooth, plus the etching step, both temporarily make enamel look chalky and opaque. This is normal and reverses within minutes to hours once saliva returns — it isn't a white spot lesion.
Can toothpaste actually get rid of white spots?
Remineralising toothpastes containing nano-hydroxyapatite or CPP-ACP can rebuild mineral content and reduce whiteness in early lesions, but they often won't fully erase an established, visible spot. For those, professional treatments like resin infiltration, microabrasion or composite are more effective.
How common are white spot lesions after braces?
Very common — studies show up to 50% of orthodontic patients can have white spot lesions after their braces are removed, usually where brackets made the enamel hardest to clean.
Should I see a dentist before getting a tooth gem?
If you have any visible white spots, chalky patches, or are unsure about the health of your enamel, yes — a quick check-up is the safest first step. This applies to any tooth gem application, at home or in a studio.
Related reading
- Why do my teeth look white after getting a tooth gem? — the temporary dehydration effect, explained
- Are tooth gems bad for your teeth? — an honest look at the real risks
- How to choose a tooth gem kit — what to check before you buy
Research & references
- Bauer, B. White spot lesion from orthodontics. Bauer Dentistry & Orthodontics.
- The effect of nano-hydroxyapatite on white spot lesions: A systematic review and meta-analysis. Journal of Dentistry, 2024.
- Comparison of the effects of toothpastes containing nanohydroxyapatite and fluoride on white spot lesions in orthodontic patients: A randomized clinical trial. PubMed, 2020.
- Remineralization potential of new toothpaste containing nano-hydroxyapatite. Yonsei University.
- Systematic Review and Meta-Analysis of Remineralizing Agents: Outcomes on White Spot Lesions. PMC, 2025.
- Nano-Hydroxyapatite (nHAp) in the Remineralization of Early Dental Caries: A Scoping Review. IJERPH, 2022.
- Fernandez-Ferrer et al. Enamel remineralization therapies for treating post-orthodontic white spot lesions: systematic review. JADA, 2018.
Cosmetic use only — not a substitute for professional dental care. This post is for general educational purposes only and is not a substitute for professional dental advice, diagnosis, or treatment. Always consult a qualified dentist about your individual teeth before undergoing any cosmetic tooth procedure.