Dr. Ellie Phillips · 2026-02-02 · Ellie Phillips (host)

“Everything I knew about dentistry - you turned it on its head” - Dr. Ellie with Ask A Hygienist

32 research-tied claims examined: 4 contradicted 3 overstated 3 context 11 supported 11 unverified

11

No source found (not proven false)

0:05:30Ellie Phillips (host)unverifiedvery low

There were no dental hygienists in the United Kingdom during the 1960s.

"because in the 1960s there were no hygienists in in the UK at that time." (said at 0:05:30)

No published record matching the claim that there were no dental hygienists in the United Kingdom during the 1960s was located; this does not prove the claim false.

0:08:20Ellie Phillips (host)unverifiedvery low

In the 1960s, the original Crest was the only toothpaste proven to repair and remineralize teeth in randomized clinical trials.

"back then the only toothpaste proven to repair and remineralize teeth was the original Crest. It had randomized clinical trials." (said at 0:08:20)

No published record matching the claim that the original Crest was the only toothpaste proven to repair and remineralize teeth in randomized clinical trials in the 1960s was located; this does not prove the claim false.

0:11:50Ellie Phillips (host)unverifiedvery low

Forty percent of the oral biofilm in adults is established during childhood and remains highly stable.

"In the mouth, we know that in the biofilm that's over our mouth, 40% of it actually is found to have developed in childhood. It's incredibly stable." (said at 0:11:50)

No published record matching the claim that 40% of the adult oral biofilm is established during childhood and remains stable was located; this does not prove the claim false. While the oral microbiome undergoes substantial succession from infancy through childhood and develops stability over time, specific scientific evidence establishing that exactly or approximately 40% of the adult oral biofilm is permanently set during childhood was not identified in the published biomedical literature.

0:28:10Ellie Phillips (host)unverifiedvery low

Studies show that ACT Total Care mouthwash is seven times more mineralizing than original ACT mouthwash.

"And they did studies to show that the ACT Total Care is seven times more mineralizing than the original." (said at 0:28:10)

No published record matching the claim that ACT Total Care mouthwash is seven times more mineralizing than original ACT mouthwash was located; this does not prove the claim false. In published in vitro comparative testing, ACT Total Care (formulated with 100 ppm fluoride) did not show superior remineralization or enamel protection compared to original ACT Anticavity rinse (formulated with 225 ppm fluoride).

0:29:10GUEST1unverifiedvery low

The human body naturally secretes xylitol.

"I think it's a miraculous sugar alcohol, you know, derived from birchwood and we even apparently secrete some naturally in our own bodies." (said at 0:29:10)

No published record matching the claim that the human body naturally secretes xylitol was located; this does not prove the claim false.

0:37:41Ellie Phillips (host)unverifiedvery low

Smoking a cigarette increases cardiovascular metabolites by 100% to 200%, whereas xylitol intake increases them by only 6%.

"If you'd had a cigarette, you would have increased the metabolites by one to 200%. The metabolites that they were reporting was so bad, and they didn't report it as percentages, but a a cigarette would cause a 100 or more percent increase. The increase with xylitol was 6%." (said at 0:37:41)

No published record matching the claim that smoking a cigarette increases cardiovascular metabolites by 100% to 200% while xylitol intake increases them by only 6% was located; this does not prove the claim false. In published clinical studies of xylitol ingestion (e.g., Witkowski et al., 2024), consuming a xylitol-sweetened beverage produces plasma xylitol concentrations that are markedly elevated (over 1,000-fold above endogenous fasting baseline levels), rather than a 6% increase.

0:40:15Ellie Phillips (host)unverifiedvery low

Permanent adult teeth start forming and producing enamel via ameloblasts from birth until six years of age.

"Adult teeth start forming from birth. The day the baby is born starts the first little cell called an ameloblast squirting out enamel and forming the permanent teeth. And so permanent teeth start forming between birth and six years old." (said at 0:40:15)

No published record matching the specific timeline for permanent dentition enamel secretion and ameloblast initiation from birth to six years of age was located among the retrieved records; this does not prove the claim false.

0:40:38Ellie Phillips (host)unverifiedvery low

Fluoride in drinking water at a concentration of one part per million causes structural alterations in developing teeth between birth and six years old.

"and even one part per million was causing an effect in the construction of the teeth between birth and six years old. So we have always known what they decided the government decided that the cosmetic effect was minimal at one part per million." (said at 0:40:38)

No published record matching the claim that fluoride in drinking water at a concentration of 1 ppm causes structural alterations in developing teeth between birth and six years old was located; this does not prove the claim false.

0:58:27Ellie Phillips (host)unverifiedvery low

In the 1920s, the Aluminum Company of America (Alcoa) was discovered to be discharging aluminum manufacturing waste products containing fluoride into water supplies at concentrations of 15 parts per million.

"then in 19 I think it was 21 or 25 the Aluminum Company of America, they discovered this brown staining in the population living around Alcoa, this company that manufactures aluminum, and they found out that that actually this company was dumping the waste product of aluminum manufacture into the water supplies and it was at 15 parts per million." (said at 0:58:27)

No published record matching the claim that the Aluminum Company of America (Alcoa) was discovered dumping aluminum manufacturing waste containing fluoride into water supplies at 15 parts per million in the 1920s was located; this does not prove the claim false.

0:44:00Ellie Phillips (host)unverifiedvery low

Synthetic hydroxyapatite was adopted or developed by NASA in the 1970s to combat dental enamel and bone mineral loss experienced by astronauts in microgravity environments.

"You know the story of hydroxyapatite that it was uh NASA that needed something... and instead they noticed that there were problems with the astronauts' health and particularly with enamel, and they were trouble cleaning their teeth." (said at 0:44:00)

No published record matching the claim that NASA developed or adopted synthetic hydroxyapatite in the 1970s to combat astronaut enamel and bone mineral loss was located; this does not prove the claim false.

0:56:55Ellie Phillips (host)unverifiedvery low

Primary (baby) teeth develop and mineralize in utero while the fetus is in the womb.

"Now, what actually happens, we then know, is that baby teeth grow in utero. When when baby's in the womb, the baby teeth form." (said at 0:56:55)

No published record matching the claim that primary (baby) teeth develop and mineralize in utero while the fetus is in the womb was located; this does not prove the claim false.

Unverified means no publication matching the claim was located; it does not prove the claim false. Spotted an error? See the corrections policy - disputes from the people quoted are prioritized.