The day after a 13-year-old girl had cosmetic treatment on three of her upper teeth, her father called her dentist with alarming news: her teeth had turned orange. The likely culprit was a tomato pizza she ate right after the procedure.
That case, published in 2016, resurfaced this month in a new report in Case Reports in Dentistry. Dentists at the University of Bordeaux and Bordeaux University Hospital in France cited it while describing a gentler approach to the same rare enamel disorder, one that kept an 11-year-old girl's results stable for three years.
Both girls had hypomature amelogenesis imperfecta, an inherited condition in which tooth enamel fails to mature properly and is left weak.
A Pizza Dinner Turned Freshly Treated Teeth Orange
The orange-teeth case was reported in the European Archives of Paediatric Dentistry by clinicians at Charles Clifford Dental Hospital in Sheffield, England. The girl had asked for help with marks on her teeth that were hurting her social interactions.
Her dentists performed microabrasion, which uses a mild acid, in this case a commercial preparation of 6.6% hydrochloric acid, to remove a thin layer of discolored enamel. The next day, her father reported the color change. An urgent review confirmed it, and further questioning turned up the pizza.
The stain was extrinsic, meaning it sat on the tooth surface. She was given a 16% carbamide peroxide bleaching gel to wear at night in a custom tray, and a review two weeks later showed the staining had completely cleared. She later received composite resin restorations on her upper front teeth and remained pleased with how they looked.
The Sheffield authors advised clinicians to warn patients against colored foods and drinks for at least 48 hours after microabrasion or bleaching.
It was not a one-off. A 2019 case report in Dental Update described a 12-year-old boy with dental fluorosis whose front teeth turned yellow after he had a drink containing turmeric on the day of his microabrasion, despite receiving aftercare instructions.
A Rare Inherited Disorder Behind the White Spots
Amelogenesis imperfecta is a group of genetic disorders in which tooth enamel does not form properly. According to MedlinePlus Genetics, affected teeth may be small, discolored, pitted or grooved, prone to rapid wear and breakage, and sensitive to certain foods and drinks. Reported frequency ranges from 1 in 700 people in northern Sweden to 1 in 14,000 in the United States.
MedlinePlus describes the hypomaturation type as having weak or brittle enamel. The Bordeaux patient had widespread white opacities that the authors described as "snow-capped," and the report notes that her younger sister showed enamel defects consistent with the same condition.
MedlinePlus adds that because the disorder changes a person's appearance, it can profoundly affect quality of life and self-esteem and may lead some people to avoid social activities. Both girls sought treatment largely because of how their teeth looked.
Bordeaux Dentists Chose Resin Over Drills and Crowns
Standard treatments often involve composite fillings, veneers or crowns. The Bordeaux authors noted that those options may require removing healthy tooth structure and can be challenging in children.
Instead, the team, whose members include clinicians at the Bordeaux University Hospital's competence center for rare oral and dental diseases, used a resin infiltration product called Icon, made by DMG. After conditioning the enamel surface, they applied a low-viscosity resin designed to seep into the defective enamel and mask the white opacities.
Resin infiltration was first introduced as a minimally invasive treatment for early cavities, according to a January systematic review in Applied Sciences. That review found it can mask white or creamy spots caused by molar-incisor hypomineralization in children's front teeth, but it named a lack of predictability as the technique's main limitation.
The Bordeaux patient saw immediate and significant improvement, with more translucent enamel, and she was highly satisfied, the team reported. The results held over three years of follow-up, including during orthodontic treatment, and were associated with a marked improvement in her oral health-related quality of life.
The authors called resin infiltration a conservative option that preserves enamel, but they were careful about its limits. They said further clinical studies and long-term follow-up are needed to confirm its durability and standardize treatment protocols, and that more prospective research is needed before it can be recommended as a first-line treatment.
They also flagged a diagnostic wrinkle in earlier research. Two previously published cases described as likely hypomature amelogenesis imperfecta, they wrote, may also be consistent with dental fluorosis, a different cause of enamel spots.
What Families Should Take from Both Cases
Neither report suggests that pizza or tomato sauce harms healthy teeth. The 2016 case involved enamel that had just been treated with acid in a child with an enamel disorder, and the stain was removed.
What the reports do show is that enamel treatments come with aftercare rules, and that options for children with rare enamel conditions are widening beyond drills and crowns. The resin approach is still backed by limited evidence, so the right choice depends on the individual patient.
Families considering treatment for discolored or spotty teeth should ask their dentist which approach fits the underlying cause, and which foods and drinks to avoid afterward and for
Key Questions Answered
Why did the girl's teeth turn orange?
Her dentists linked the staining to a tomato pizza she ate right after microabrasion, an acid-based enamel treatment. The stain sat on the surface of the teeth.
Was the orange staining permanent?
No. It cleared completely after two weeks of a 16% carbamide peroxide bleaching gel worn in a custom tray at night.
Is the pizza case new?
No. It was published in 2016 and cited in a Sept. 2, 2026, report describing resin infiltration for the same rare enamel disorder.
What is amelogenesis imperfecta?
It is a group of inherited conditions in which tooth enamel forms abnormally. Teeth may be discolored, pitted, sensitive, or prone to breakage.
What did the new case show?
An 11-year-old girl treated with resin infiltration had immediate cosmetic improvement that stayed stable for three years, including during orthodontic care. It is a single case, and more research is needed.
What should patients do after enamel treatments?
Follow your dentist's aftercare instructions. The Sheffield authors advised avoiding colored foods and drinks for at least 48 hours after microabrasion or bleaching.
