Latest news with #Davids
The Hill
3 days ago
- Politics
- The Hill
Hegseth reassigns first female Naval Academy head
Navy Vice Adm. Yvette Davids, the first female to serve as superintendent of the U.S. Naval Academy is being reassigned, the Defense Department announced Friday. Davids was instead tapped to serve as deputy chief of naval operations, plans, strategy and warfighting development, according to a press release. Marine Corps Lt. Gen. Michael J. Borgschulte was named to lead the Naval Academy in her place — making him the first Marine to lead the institution. 'The Naval Academy remains one of the most consequential institutions in American public life. It forges leaders of character, men and women of integrity, resilience, and intellect who will guide our Fleet and our Nation through the challenges of an increasingly contested world,' Secretary of the Navy John C. Phelan said in a statement. 'Lt. Gen. Borgschulte is uniquely prepared to lead the next generations of naval and marine officers and ensure they are ready for the future fight,' Phelan added. Superintendents at the Naval Academy are there for at least three years typically, but the stint can be shorter. Davids, a 1989 graduate of the academy in Annapolis, Md., had been the leader of the institution since January 2024. Her reassignment, which was first reported by USNI News, comes as Defense Secretary Pete Hegseth has overseen the shake-up of top military leaders. Trump removed Joint Chiefs of Staff Air Force Gen. C.Q. Brown Jr. in February and nominated Air Force Lt. Gen. Dan 'Razin' Caine, who was eventually confirmed by the Senate for the role. The administration also fired chief of naval operations Adm. Lisa M. Franchetti, who was the first woman to serve on the Joint Chiefs of Staff. Trump also removed Adm. Linda Fagan, the first female U.S. Coast Guard commandant. Phelan congratulated Davids on her appointment, adding that she commanded 'at every level and has led with distinction in some of the most complex security environments of our time.' 'Her strategic vision and operational depth will be an exceptional asset to the Navy and the Department of Defense,' Phelan said. Davids said in a statement that she was honored to be nominated to her new role. 'I look forward to continuing to serve alongside America's strongest warfighters,' she wrote.
Yahoo
3 days ago
- Politics
- Yahoo
Pentagon announces Marine general tapped to lead Naval Academy in historic first
In a landmark nomination that reshapes nearly two centuries of tradition, Marine Corps Lt. Gen. Michael J. Borgschulte has been tapped to serve as the next superintendent of the U.S. Naval Academy in Annapolis, Maryland. If confirmed by the Senate, he will become the first Marine to hold the top post in the Academy's 180-year history. The move was announced Friday by Secretary of Defense Pete Hegseth as part of a broader slate of military leadership nominations. Borgschulte currently serves as the deputy commandant for manpower and reserve affairs at Marine Corps Headquarters in Quantico, Virginia. He is a 1991 graduate of the Naval Academy. The nomination comes amid an unexpected leadership shuffle. Vice Adm. Yvette Davids, who assumed command of the academy last year, has been nominated for reappointment and reassignment to the Pentagon. She is slated to become the deputy chief of naval operations for operations, plans, strategy, and warfighting development (N3/N5/N7), pending Senate approval and a congressional waiver. Hegseth Announces Navy Oil Tanker Named After Gay Rights Leader Renamed After Medal Of Honor Winner "I'm honored to be nominated," Davids said in a statement. "I look forward to continuing to serve alongside America's strongest warfighters." Read On The Fox News App Secretary of the Navy John C. Phelan praised both officers. He called Borgschulte a "decorated combat leader" with "strategic insight" and commended Davids for her "strategic vision" and "operational depth." Phelan also noted the significance of the nomination, calling it a powerful signal of "naval integration" as a Marine prepares to lead the Navy's flagship officer training institution. Founded in 1845, the U.S. Naval Academy has long been led exclusively by Navy officers. The nomination of a Marine marks a sharp departure and a signal of evolving priorities in joint leadership and force development. Phelan described the Academy as one of the most "consequential institutions in American public life" and said Borgschulte's leadership will help shape officers "for an increasingly contested world." Trump Nominates Seasoned Military Leaders To Head Vital Global Commands Borgschulte was commissioned in 1991 after graduating from the Naval Academy and has held multiple command and combat roles throughout his career. In his current position, he oversees the personnel policies, readiness and force structure of the Marines. Davids, a 1989 graduate of the Naval Academy, made history as the first woman and the first Hispanic to serve as superintendent. Her tenure at the academy appears to be ending prematurely. Superintendents are traditionally expected to serve three-year terms and then retire. A Department of Defense (DOD) news release did not provide an explanation for the sudden change, and her next assignment requires a waiver from Congress. Her next role would typically require a post-retirement transition, which she has not yet completed. Davids' husband, Rear Adm. Keith Davids, retired last year as commander of Naval Special Warfare. The couple met at the Academy while they were both plebes. Fox News Digital has reached out to the Navy regarding the timeline of the leadership transition. The nomination is now in the hands of the Senate with no official date yet for confirmation or change of command. Borgschulte's nomination is part of a broader DOD leadership shake-up that includes nominations for new service vice chiefs and combatant command heads across the military. The Navy referred Fox News Digital to the DOD release on the matter when asked for further article source: Pentagon announces Marine general tapped to lead Naval Academy in historic first Solve the daily Crossword
CNET
3 days ago
- Health
- CNET
NOBS Toothpaste Tablets: What Dentists Say About Its Main Ingredient
The NOBS (No Bad Stuff) toothpaste tablets are going viral thanks to their main ingredient of nano-hydroxyapatite, a fluoride-free alternative. As health concerns around fluoride and its presence in public drinking water continue to swirl, nano-hydroxyapatite toothpastes are becoming increasingly popular. You've likely seen them on store shelves or in ads from companies like Boka and Davids, marketed as fluoride-free alternatives for your toothbrush that claim to whiten teeth, repair enamel and prevent cavities. "As ingredient labels shift toward cleaner, fluoride-free formulas, one compound is taking center stage in modern oral care: nano-hydroxyapatite," Dr. Pia Lieb, DDS, cosmetic dentist and clinical assistant professor emerita at NYU College of Dentistry, explains. According to dentists, if you're considering replacing your fluoride toothpaste with a nano-hydroxyapatite alternative like the now-viral NOBS, you should know the following potential benefits and side effects. What is nano-hydroxyapatite? "Nano-hydroxyapatite is a synthetic calcium phosphate compound that's used in some oral care products, including toothpastes," explains Dr. Ada Cooper, consumer advisor and spokesperson for the American Dental Association, says. "[It] has a structure that is similar to hydroxyapatite found in enamel, and nHAP gets incorporated into the tooth structure preferentially in demineralized areas." Nano-hydroxyapatite is also abbreviated as n-HA and n-HAp. Dr. Royce Lai of King Village Dental adds that this is technically a two-part question, since "hydroxyapatite has been around for decades and has been studied for at least 20 years." Newer and less studied, nano-hydroxyapatite is a version of hydroxyapatite with small, rod-shaped particles. "Hydroxyapatite is natural. It is a type of calcium that makes up bones and teeth," says Lai. "Nano-hydroxyapatite relates to the particle size. These are between 20 and 80 nanometers and are much smaller than the hydroxyapatite tubules that are a part of your teeth." According to Dr. Daniela Eversgerd, a cosmetic dentist and the founder of Allure Dental, nano-hydroxyapatite was developed by NASA in the 1970s for astronauts dealing with bone and enamel loss during long periods of space travel. Since the early 1990s, it has been approved for oral care products in Japan. Nano-hydroxyapatite toothpaste benefits "Nano-hydroxyapatite doesn't just protect your teeth -- it helps rebuild them," says Dr. Catrise Austin, a cosmetic dentist, author of Gum Health Made Simple and host of the Let's Talk Smiles podcast. She lists the following as potential nano-hydroxyapatite benefits: Enamel remineralization Tooth sensitivity relief Reduced bacterial adhesion Whitening and gloss enhancement "n-HA can actually fill microscopic cracks and help reverse or arrest early cavities," adds dentist Dr. Sandip Sachar. Austin cites a 2019 study that found a 10% hydroxyapatite toothpaste is equivalent or non-inferior to fluoride toothpaste for preventing and remineralizing dental cavities (or caries) in children. When it comes to teeth sensitivity, Lai cites a 2014 study concluding that 15% nano-hydroxyapatite helped sensitive teeth. "The particle size could get into space and work better than larger particles in micro-hydroxyapatite or fluoride," he explains. "The conclusion was that nano-hydroxyapatite could significantly reduce tooth sensitivity to hot and cold in two to four weeks of use." Referencing an 18-month 2023 clinical trial finding that a 10% n-HAp toothpaste protected adult teeth from new cavities as well as a standard 1,450-ppm fluoride paste, Dr. Christopher Tolmie, DDS, MBA, of PDS Health, states, "By patching enamel and calming swollen gums, nano-hydroxyapatite may cut off a hidden spark of chronic inflammation linked to heart disease and diabetes." Since nano-hydroxyapatite toothpastes are fluoride free, Dr. Yenile Y. Pinto, DDS, functional and biomimetic dentist and founder of Deering Dental, adds, "It's also been shown to reduce sensitivity and strengthen the enamel surface without the risk of fluorosis." Fluorosis occurs when you get too much fluoride as a child, causing white or brown spots on the teeth. The CDC reports that fluorosis typically doesn't affect tooth function and isn't painful. A 2020 systematic review of 32 studies concluded that "Nano-HA is a relatively novel material with outstanding physical, chemical, mechanical and biological properties that makes it suitable for multiple interventions. It outperformed most of the classic materials used in implantology and surgery, but it should be further investigated for bone engineering and caries prevention therapy." HengleinA 2023 comprehensive review found that, while more long-term studies are needed to establish the safety of regular use, "Nanohydroxyapatite is a promising revolutionary material in the prevention of early carious lesion mainly due to a greater source of free calcium." Ultimately, providing a 2021 review and 2022 scoping review, Cooper concludes, "Although there is some evidence that alternative ingredients, such as [nano] hydroxyapatite, prevent tooth decay by acting as a remineralizing or anti-cavity agent, the studies are preliminary. The only anti-cavity agent recognized by the Food and Drug Administration in its over-the-counter monograph is fluoride, a naturally occurring chemical." Cooper adds that all toothpastes with the ADA Seal of Acceptance contain fluoride. The administration specifically recommends brushing your teeth twice a day with fluoride toothpaste and regularly visiting your dentist. Nano-hydroxyapatite toothpaste side effects "According to a [2021] narrative review from Odontology, the official journal of the Society of the Nippon Dental University, so far, there have been no reports of adverse dental or systemic effects of HAP-containing toothpastes because HAP has an excellent biocompatibility," states Cooper. According to Austin, the concern with nano-hydroxyapatite is that, because it's made of nanoparticles, some worry about how much might get absorbed into the body if regularly swallowed. "The European Commission's Scientific Committee raised concerns due to the lack of long-term safety data on ingestion, particularly in children," she says. This has led to temporary nano-hydroxyapatite restrictions (not a full-on banning) in Europe. The European Scientific Committee deems nHA safe in toothpaste up to 29.5% and up to 10% in mouthwash, per Tolmie. However, he states, "Regulators still bar it from breath-spray products to avoid lung exposure, so stick to pastes and rinses." Key concerns around nano-hydroxyapatite, according to Lieb, are: Potential ingestion and systemic absorption, especially in nano form Lack of long-term studies in humans on the cumulative effects Unknown impact of inhalation from aerosol products (not toothpaste) In terms of systemic absorption, Sachar specifies, "Because nano-hydroxyapatite particles are similar in composition to bone mineral, there has been some theoretical concern that if absorbed systemically, they could potentially contribute to unwanted calcifications in soft tissues (like blood vessels or kidneys)." However, she states that this is speculative and not supported by any current clinical nano-hydroxyapatite toothpaste only effective at 10%? "Most clinical formulations of nHA range from 5%-15%, with 10% emerging as the benchmark concentration in several Japanese and European studies," answers Lieb. "This concentration has demonstrated reliable enamel restoration while maintaining product stability and usability." However, she states that newer formulations are experimenting with lower concentrations and enhanced delivery systems (such as encapsulation or synergistic minerals), which may improve efficacy at reduced levels. "The effectiveness isn't just about percentage, it's also about particle quality and how it's delivered to the tooth surface," she explains. Tolmie adds, "Effective repair starts as low as 5% and plateaus around 10-15%. Several studies show that 5% n-HAp can mend enamel dings, divots and dents in the teeth, with benefits leveling off somewhere between 10% and 15%. One review even noted that 5% sometimes beats 10% because fewer particles clump, making them easier to slip into enamel defects; hence, most US brands sit comfortably in the 5-10% sweet spot." Should people replace fluoride toothpaste with nano-hydroxyapatite? Eversgerd states that it all depends on each person's oral health needs. "Fluoride remains the gold standard for cavity prevention, supported by decades of large-scale, randomized controlled trials," she explains. "However, for patients seeking a fluoride alternative -- whether due to sensitivity, allergies, personal preferences or a desire for a biomimetic approach -- nano-hydroxyapatite provides a scientifically supported option." According to the Academy of Biomimetic Dentistry, a biomimetic approach is one in which damaged teeth are restored using materials mimicking natural teeth in function, strength and appearance. For high-risk patients, Eversgerd recommends fluoride, while she may recommend n-Ha to low-risk or fluoride-averse individuals. Austin seconds this, but adds that she also recommends fluoride toothpaste to children with poor brushing habits or communities with limited dental access. "nHA is a great option, but it's not a one-size-fits-all replacement for fluoride -- yet," Austin says. Lieb explains that nHA may also be a compelling alternative for patients with aesthetic concerns, such as whitening-induced sensitivity, and individuals in preventive care regimens post-restorative treatment. Pinto agrees that it depends on the person, stating, "For most of my patients, especially those with low to moderate cavity risk, nano-hydroxyapatite is an excellent option; gentler on the mouth, less drying and effective at rebuilding early damage. For people with high cavity risk, fluoride might still be the best choice, at least short term. For my high-risk patients, I often recommend a combo toothpaste that includes both ingredients when appropriate." Ultimately, if a patient isn't high risk and has health or safety concerns about fluoride, she thinks hydroxyapatite is a great option. When asked if there's a reason people should choose n-HAp over other anti-cavity toothpastes, Tolmie answers, "No, as long as patients are brushing their teeth with an anti-cavity toothpaste. There are differences in the way an n-HAp toothpaste and a fluoride toothpaste work to prevent decay, and some n-HAp toothpastes may feel smoother on the teeth. But anti-cavity toothpastes as a whole accomplish the same task. Do I wash a car with tap water or bottled water? We know that both of them get the job done." What's most important, according to Tolmie, is that patients ensure they're not swallowing toothpaste. What does the American Dental Association think? Cooper states that the ADA recommends brushing teeth twice daily for two minutes with fluoride toothpaste, as the naturally occurring mineral has been proven to remineralize weakened enamel and reverse early signs of tooth decay. "Additionally, the fluoride you take in from drinking water and other beverages continues to provide a topical benefit because it becomes part of your saliva, constantly bathing the teeth and helping to rebuild weakened tooth enamel," Cooper further explains. "The best scientific evidence has shown that adding fluoride to community water supplies is safe and effective. This is backed by decades of research and recognized by more than 100 health organizations." GoodboyDoes nano-hydroxyapatite toothpaste work? All of the dentists we consulted agree that nano-hydroxyapatite toothpaste works, but in the right context and with the right product. It's also not a miracle cure and should not replace your entire oral care routine, dentist's recommendations or regular appointments. Plus, Eversgerd adds that more long-term, large-scale trials are needed to fully validate whether it's equal to fluoride in preventing cavities. When asked if it's effective, Austin says, "Yes -- particularly for enamel remineralization and sensitivity. In my practice, I've seen patients who switched to nHA toothpaste experience noticeable improvements in comfort, plaque control and surface smoothness. But like any product, it works best when paired with consistent brushing, flossing and professional cleanings." Pinto agrees and has also seen the results firsthand. "It helps remineralize enamel, soothe sensitivity and support a healthier oral microbiome, especially when paired with a good routine (good home hygiene, healthy diet, hydration and nasal breathing)," she explains, noting that it's not a miracle cure, but does offer many benefits. On behalf of the ADA, Cooper echoes Eversgerd's earlier statement: "The use of nano-hydroxyapatite (nHAP) in over-the-counter products is growing and some evidence shows that nHAP may contribute to remineralization, but the evidence is fairly new and often ambiguous, especially regarding clinical indications. " Do experts recommend nano-hydroxyapatite toothpaste? All of the experts we consulted do recommend nano-hydroxyapatite toothpaste, but only for certain patients. After all, according to Austin, "Nearly half of US adults over 30 have some form of gum disease, and you can't out-toothpaste a bad hygiene routine." Brushing your teeth regularly, flossing and regularly visiting your dentist are still essential, no matter what toothpaste you use. Though Lieb recommends nHA toothpaste for adult patients experiencing post-whitening sensitivity or early enamel erosion, low-caries risk individuals seeking natural alternatives and adults undergoing cosmetic dental work who want to protect their investment with gentle, remineralizing care, she doesn't recommend nano-hydroxyapatite for children with deciduous dentition. "In my professional opinion, fluoride remains the safest and most effective option for all patients under 14," says Lieb. "Its protective effect during the development of permanent dentition is unmatched, and its caries-prevention record is well established." Sachar states that she often recommends it for "patients seeking fluoride-free options, those with mild tooth sensitivity and for children at risk of swallowing fluoride toothpaste." However, she advises that patients with moderate to high cavity risk not fully abandon fluoride. Again, it's important to note that the "ADA recommends that adults brush their teeth twice daily with fluoride toothpaste for at least two minutes each time, or as directed by a licensed dentist," according to Cooper. This is because the proposed benefits of nHAP are fairly new and ambiguous. Getty Images The bottom line Though more research is needed, the dentists we consulted explained that nano-hydroxyapatite toothpaste can be an effective alternative to fluoride -- but only in the right context. The ADA doesn't recommend it. It's also not a miracle cure or a replacement for brushing regularly, flossing and professional dental appointments. If you're considering nano-hydroxyapatite toothpaste, consult your dentist first before making the switch. They know your teeth best and will be able to help you find the best toothpaste for your smile.
Axios
4 days ago
- Politics
- Axios
Naval Academy head is latest high-ranking woman ousted by Hegseth
The first woman to lead the U.S. Naval Academy is being reassigned by Defense Secretary Pete Hegseth, multiple outlets reported. The big picture: Vice Adm. Yvette Davids joins a growing list of women and people of color serving in top military roles to be ousted by the Trump administration, many of whom as part of a purge of so-called "wokeness" in the military. Driving the news: Davids, who has been the superintendent of the U.S. Naval Academy since January 2024, will be renominated to serve on the staff of the chief of naval operations, according to U.S. Naval Institute News, which was first to report the story. Superintendents of the Naval Academy are to serve terms no less than three years, according to federal law. But that can be waived. Davids is expected to be replaced by Marine Corps Lt. Gen. Michael Borgschulte, per the Washington Post. Borgschulte would be the first Marine Corps officer to lead the U.S. Naval Academy in its 180-year history. Zoom out: The Trump administration's mass firings and pushback against diversity, equity and inclusion efforts have included controversial dismissals of military leaders. Hegseth fired U.S. Navy Vice Adm. Shoshana Chatfield, who served as the U.S. military representative to the NATO Military Committee, in April. Adm. Lisa Franchetti, the first woman to serve as the highest-ranking officer of the U.S. Navy, and Adm. Linda Fagan, the first woman to lead the U.S. Coast Guard, were both removed earlier this year. Trump also booted former chairman of the Joint Chiefs of Staff, Gen. Charles "CQ" Brown Jr. Brown was the first Black chief of staff of the Air Force and the second Black general to serve as chairman. Between the lines: Hegseth's contention that women should not hold combat roles was one of several controversies during his confirmation process. What they're saying: A spokesperson for the Marine Corps. said the Office of the Secretary of Defense will provide an official statement once a candidate has been confirmed by the Senate.
CNET
15-07-2025
- Health
- CNET
Is Nano-Hydroxyapatite Toothpaste an Effective Fluoride Alternative? Dentists Weigh In
Picking the best toothpaste can be a challenge, especially with newer ingredients being added to the market. Nano-hydroxyapatite is a timely example and the star ingredient for popular brands like Boka and Davids. Amidst health concerns around fluoride and Robert F. Kennedy Jr., US Secretary of Health and Human Services, proposing to remove it from public water, nano-hydroxyapatite has been promoted as an effective alternative to fluoride in toothpaste. Many claim that it can repair enamel, prevent cavities and even whiten teeth. "As ingredient labels shift toward cleaner, fluoride-free formulas, one compound is taking center stage in modern oral care: nano-hydroxyapatite," Dr. Pia Lieb, DDS, cosmetic dentist and clinical assistant professor emerita at NYU College of Dentistry, explains. Marketed as a biomimetic, enamel-restoring alternative to fluoride, this ingredient has gained a loyal following, but does the science justify the hype? To find out if nano-hydroxyapatite toothpaste is worth incorporating into your dental care routine, and if it's a viable replacement for fluoride toothpaste, we reached out to dentists for the potential benefits, side effects and their expert opinions. What is nano-hydroxyapatite? "Nano-hydroxyapatite is a synthetic calcium phosphate compound that's used in some oral care products, including toothpastes," explains Dr. Ada Cooper, consumer advisor and spokesperson for the American Dental Association, says. "[It] has a structure that is similar to hydroxyapatite found in enamel, and nHAP gets incorporated into the tooth structure preferentially in demineralized areas." Nano-hydroxyapatite is also abbreviated as n-HA and n-HAp. Dr. Royce Lai of King Village Dental adds that this is technically a two-part question, since "hydroxyapatite has been around for decades and has been studied for at least 20 years." Newer and less studied, nano-hydroxyapatite is a version of hydroxyapatite with small, rod-shaped particles. "Hydroxyapatite is natural. It is a type of calcium that makes up bones and teeth," says Lai. "Nano-hydroxyapatite relates to the particle size. These are between 20 and 80 nanometers and are much smaller than the hydroxyapatite tubules that are a part of your teeth." According to Dr. Daniela Eversgerd, a cosmetic dentist and the founder of Allure Dental, nano-hydroxyapatite was developed by NASA in the 1970s for astronauts dealing with bone and enamel loss during long periods of space travel. Since the early 1990s, it has been approved for oral care products in Japan. Potential nano-hydroxyapatite toothpaste benefits "Nano-hydroxyapatite doesn't just protect your teeth -- it helps rebuild them," says Dr. Catrise Austin, a cosmetic dentist, author of Gum Health Made Simple and host of the Let's Talk Smiles podcast. She lists the following as potential nano-hydroxyapatite benefits: Enamel remineralization Tooth sensitivity relief Reduced bacterial adhesion Whitening and gloss enhancement "n-HA can actually fill microscopic cracks and help reverse or arrest early cavities," adds dentist Dr. Sandip Sachar. Austin cites a 2019 study that found a 10% hydroxyapatite toothpaste is equivalent or non-inferior to fluoride toothpaste for preventing and remineralizing dental cavities (or caries) in children. When it comes to teeth sensitivity, Lai cites a 2014 study concluding that 15% nano-hydroxyapatite helped sensitive teeth. "The particle size could get into space and work better than larger particles in micro-hydroxyapatite or fluoride," he explains. "The conclusion was that nano-hydroxyapatite could significantly reduce tooth sensitivity to hot and cold in two to four weeks of use." Referencing an 18-month 2023 clinical trial finding that a 10% n-HAp toothpaste protected adult teeth from new cavities as well as a standard 1,450-ppm fluoride paste, Dr. Christopher Tolmie, DDS, MBA, states, "By patching enamel and calming swollen gums, nano-hydroxyapatite may cut off a hidden spark of chronic inflammation linked to heart disease and diabetes." Since nano-hydroxyapatite toothpastes are fluoride free, Dr. Yenile Y. Pinto, DDS, functional and biomimetic dentist and founder of Deering Dental, adds, "It's also been shown to reduce sensitivity and strengthen the enamel surface without the risk of fluorosis." Fluorosis occurs when you get too much fluoride as a child, causing white or brown spots on the teeth. The CDC reports that fluorosis typically doesn't affect tooth function and isn't painful. A 2020 systematic review of 32 studies concluded that "Nano-HA is a relatively novel material with outstanding physical, chemical, mechanical and biological properties that makes it suitable for multiple interventions. It outperformed most of the classic materials used in implantology and surgery, but it should be further investigated for bone engineering and caries prevention therapy." HengleinA 2023 comprehensive review found that, while more long-term studies are needed to establish the safety of regular use, "Nanohydroxyapatite is a promising revolutionary material in the prevention of early carious lesion mainly due to a greater source of free calcium." Ultimately, providing a 2021 review and 2022 scoping review, Cooper concludes, "Although there is some evidence that alternative ingredients, such as [nano] hydroxyapatite, prevent tooth decay by acting as a remineralizing or anti-cavity agent, the studies are preliminary. The only anti-cavity agent recognized by the Food and Drug Administration in its over-the-counter monograph is fluoride, a naturally occurring chemical." Cooper adds that all toothpastes with the ADA Seal of Acceptance contain fluoride. The administration specifically recommends brushing your teeth twice a day with fluoride toothpaste and regularly visiting your dentist. Potential nano-hydroxyapatite toothpaste side effects and EU restrictions "According to a [2021] narrative review from Odontology, the official journal of the Society of the Nippon Dental University, so far, there have been no reports of adverse dental or systemic effects of HAP-containing toothpastes because HAP has an excellent biocompatibility," states Cooper. According to Austin, the concern with nano-hydroxyapatite is that, because it's made of nanoparticles, some worry about how much might get absorbed into the body if regularly swallowed. "The European Commission's Scientific Committee raised concerns due to the lack of long-term safety data on ingestion, particularly in children," she says. This has led to temporary nano-hydroxyapatite restrictions (not a full-on banning) in Europe. The European Scientific Committee deems nHA safe in toothpaste up to 29.5% and up to 10% in mouthwash, per Tolmie. However, he states, "Regulators still bar it from breath-spray products to avoid lung exposure, so stick to pastes and rinses." Key concerns around nano-hydroxyapatite, according to Lieb, are: Potential ingestion and systemic absorption, especially in nano form Lack of long-term studies in humans on the cumulative effects Unknown impact of inhalation from aerosol products (not toothpaste) In terms of systemic absorption, Sachar specifies, "Because nano-hydroxyapatite particles are similar in composition to bone mineral, there has been some theoretical concern that if absorbed systemically, they could potentially contribute to unwanted calcifications in soft tissues (like blood vessels or kidneys)." However, she states that this is speculative and not supported by any current clinical nano-hydroxyapatite toothpaste only effective at 10%? "Most clinical formulations of nHA range from 5%-15%, with 10% emerging as the benchmark concentration in several Japanese and European studies," answers Lieb. "This concentration has demonstrated reliable enamel restoration while maintaining product stability and usability." However, she states that newer formulations are experimenting with lower concentrations and enhanced delivery systems (such as encapsulation or synergistic minerals), which may improve efficacy at reduced levels. "The effectiveness isn't just about percentage, it's also about particle quality and how it's delivered to the tooth surface," she explains. Tolmie adds, "Effective repair starts as low as 5% and plateaus around 10-15%. Several studies show that 5% n-HAp can mend enamel dings, divots and dents in the teeth, with benefits leveling off somewhere between 10% and 15%. One review even noted that 5% sometimes beats 10% because fewer particles clump, making them easier to slip into enamel defects; hence, most US brands sit comfortably in the 5-10% sweet spot." Should people replace fluoride toothpaste with nano-hydroxyapatite? Eversgerd states that it all depends on each person's oral health needs. "Fluoride remains the gold standard for cavity prevention, supported by decades of large-scale, randomized controlled trials," she explains. "However, for patients seeking a fluoride alternative -- whether due to sensitivity, allergies, personal preferences or a desire for a biomimetic approach -- nano-hydroxyapatite provides a scientifically supported option." According to the Academy of Biomimetic Dentistry, a biomimetic approach is one in which damaged teeth are restored using materials mimicking natural teeth in function, strength and appearance. For high-risk patients, Eversgerd recommends fluoride, while she may recommend n-Ha to low-risk or fluoride-averse individuals. Austin seconds this, but adds that she also recommends fluoride toothpaste to children with poor brushing habits or communities with limited dental access. "nHA is a great option, but it's not a one-size-fits-all replacement for fluoride -- yet," Austin says. Lieb explains that nHA may also be a compelling alternative for patients with aesthetic concerns, such as whitening-induced sensitivity, and individuals in preventive care regimens post-restorative treatment. Pinto agrees that it depends on the person, stating, "For most of my patients, especially those with low to moderate cavity risk, nano-hydroxyapatite is an excellent option; gentler on the mouth, less drying and effective at rebuilding early damage. For people with high cavity risk, fluoride might still be the best choice, at least short term. For my high-risk patients, I often recommend a combo toothpaste that includes both ingredients when appropriate." Ultimately, if a patient isn't high risk and has health or safety concerns about fluoride, she thinks hydroxyapatite is a great option. When asked if there's a reason people should choose n-HAp over other anti-cavity toothpastes, Tolmie answers, "No, as long as patients are brushing their teeth with an anti-cavity toothpaste. There are differences in the way an n-HAp toothpaste and a fluoride toothpaste work to prevent decay, and some n-HAp toothpastes may feel smoother on the teeth. But anti-cavity toothpastes as a whole accomplish the same task. Do I wash a car with tap water or bottled water? We know that both of them get the job done." What's most important, according to Tolmie, is that patients ensure they're not swallowing toothpaste. What does the American Dental Association think? Cooper states that the ADA recommends brushing teeth twice daily for two minutes with fluoride toothpaste, as the naturally occurring mineral has been proven to remineralize weakened enamel and reverse early signs of tooth decay. "Additionally, the fluoride you take in from drinking water and other beverages continues to provide a topical benefit because it becomes part of your saliva, constantly bathing the teeth and helping to rebuild weakened tooth enamel," Cooper further explains. "The best scientific evidence has shown that adding fluoride to community water supplies is safe and effective. This is backed by decades of research and recognized by more than 100 health organizations." GoodboyDoes nano-hydroxyapatite toothpaste work? All of the dentists we consulted agree that nano-hydroxyapatite toothpaste works, but in the right context and with the right product. It's also not a miracle cure and should not replace your entire oral care routine, dentist's recommendations or regular appointments. Plus, Eversgerd adds that more long-term, large-scale trials are needed to fully validate whether it's equal to fluoride in preventing cavities. When asked if it's effective, Austin says, "Yes -- particularly for enamel remineralization and sensitivity. In my practice, I've seen patients who switched to nHA toothpaste experience noticeable improvements in comfort, plaque control and surface smoothness. But like any product, it works best when paired with consistent brushing, flossing and professional cleanings." Pinto agrees and has also seen the results firsthand. "It helps remineralize enamel, soothe sensitivity and support a healthier oral microbiome, especially when paired with a good routine (good home hygiene, healthy diet, hydration and nasal breathing)," she explains, noting that it's not a miracle cure, but does offer many benefits. On behalf of the ADA, Cooper echoes Eversgerd's earlier statement: "The use of nano-hydroxyapatite (nHAP) in over-the-counter products is growing and some evidence shows that nHAP may contribute to remineralization, but the evidence is fairly new and often ambiguous, especially regarding clinical indications. " Do experts recommend nano-hydroxyapatite toothpaste? All of the experts we consulted do recommend nano-hydroxyapatite toothpaste, but only for certain patients. After all, according to Austin, "Nearly half of US adults over 30 have some form of gum disease, and you can't out-toothpaste a bad hygiene routine." Brushing your teeth regularly, flossing and regularly visiting your dentist are still essential, no matter what toothpaste you use. Though Lieb recommends nHA toothpaste for adult patients experiencing post-whitening sensitivity or early enamel erosion, low-caries risk individuals seeking natural alternatives and adults undergoing cosmetic dental work who want to protect their investment with gentle, remineralizing care, she doesn't recommend nano-hydroxyapatite for children with deciduous dentition. "In my professional opinion, fluoride remains the safest and most effective option for all patients under 14," says Lieb. "Its protective effect during the development of permanent dentition is unmatched, and its caries-prevention record is well established." Sachar states that she often recommends it for "patients seeking fluoride-free options, those with mild tooth sensitivity and for children at risk of swallowing fluoride toothpaste." However, she advises that patients with moderate to high cavity risk not fully abandon fluoride. Again, it's important to note that the "ADA recommends that adults brush their teeth twice daily with fluoride toothpaste for at least two minutes each time, or as directed by a licensed dentist," according to Cooper. This is because the proposed benefits of nHAP are fairly new and ambiguous. Getty Images The bottom line Though more research is needed, the dentists we consulted explained that nano-hydroxyapatite toothpaste can be an effective alternative to fluoride -- but only in the right context. The ADA doesn't recommend it. It's also not a miracle cure or a replacement for brushing regularly, flossing and professional dental appointments. If you're considering nano-hydroxyapatite toothpaste, consult your dentist first before making the switch. They know your teeth best and will be able to help you find the best toothpaste for your smile.
