The Science Behind Aluraâ„¢ Oral Defense
We don't ask you to take our word for it. Every ingredient in Alura was chosen based on published, peer-reviewed research — not trends, not influencer endorsements, not marketing. Below is the evidence base for each of the four layers in our formula, with direct links to the original studies so you can read them yourself.
Layer 1
XYLITOL: Starving the Bacteria That Cause Cavities
Xylitol is a naturally occurring sugar alcohol that cavity-causing bacteria (S. mutans) cannot metabolize. They consume it, waste energy trying to process it, produce no acid, and their population declines over repeated exposure. Simultaneously, xylitol stimulates saliva, your mouth's built-in acid buffer and mineral delivery system.
Key findings from the published literature:
A meta-analysis reviewing 358 studies found that caries risk in xylitol groups was statistically significantly lower than control groups. (ALHumaid & Bamashmous, 2022)
A Cochrane systematic review reported a prevented fraction of 58.66% when comparing xylitol gum to no gum, meaning xylitol users had roughly 59% fewer cavities. (Riley et al., 2015)
A randomized clinical trial found that xylitol chewable tablets reduced salivary mutans streptococci counts and raised salivary pH comparably to xylitol chewing gum, validating the chewable tablet delivery format Alura uses. (Elmokanen et al., 2022)
LAYER 2
ORAL PROBIOTICS: Rebalancing the Oral Microbiome
Alura contains three Lactobacillus strains — L. salivarius, L. paracasei, and L. acidophilus — at 4 Billion CFU. Each strain was selected for a specific oral health function: colonizing the mouth, disrupting harmful biofilms, and physically trapping and clearing cavity-causing bacteria.
Key findings from the published literature:
A systematic review of 21 clinical trials found that L. paracasei and L. salivarius were among the most effective probiotic strains at reducing S. mutans levels. (Frontiers in Medicine, 2025)
A double-blind placebo-controlled trial found that L. paracasei specifically co-aggregates with mutans streptococci, promoting their clearance from the mouth without disrupting beneficial oral bacteria. (PMC, 2013)
A clinical trial using L. salivarius + xylitol chewable tablets — the same combination and format as Alura — found significant decreases in oral malodor at 2 weeks and gum bleeding at 4 weeks. (Iwamoto et al., 2010)
A 130-participant, 6-arm randomized controlled trial tested combined L. salivarius + L. paracasei probiotic tablets, directly validating the multi-strain tablet approach used in Alura. (ClinicalTrials.gov, NCT04289337)
A systematic review and meta-analysis of 32 RCTs confirmed that probiotic-containing products produced measurable reductions in cavity-causing bacteria. (PMID 30298454, 2018)
Layer 3
HYDROXYAPATITE: Rebuilding Enamel With the Mineral Teeth Are Made Of
Microcrystalline hydroxyapatite is the same mineral that makes up 97% of your tooth enamel. When delivered orally, nano-sized particles integrate with the enamel surface, filling microscopic cracks and defects with the same material teeth are built from. Used in Japanese dentistry since 1980 and approved as an anti-caries agent by the Japanese government in 1993.
Key findings from the published literature:
A randomized in-situ study published in Nature's BDJ Open found that hydroxyapatite toothpaste achieved 26% remineralization versus 14.6% for fluoride, nearly double. (Amaechi et al., 2022)
An 18-month double-blind randomized clinical trial found that hydroxyapatite toothpaste demonstrated caries-preventing effects comparable to fluoride. (Frontier in Public Health, 2023)
A 2024 systematic review and meta-analysis confirmed that hydroxyapatite — both microcrystalline and nanosized — consistently demonstrates remineralization efficacy across in-situ studies. (ScienceDirect, 2024)
A review in PMC found that hydroxyapatite particles reduce bacterial attachment to enamel comparably to chlorhexidine without side effects like tooth discoloration or microbiome disruption. (Meyer & Enax, 2019)
Layer 4
GUAVA FRUIT POWDER: Nature's Antimicrobial for Teeth and Gums
Guava (Psidium guajava) contains bioactive compounds — including guajaverin and morin — that demonstrate antimicrobial activity against the bacteria responsible for cavities and gum disease. Published research shows guava-based oral treatments perform comparably to chlorhexidine (the prescription gold standard) for gum health without the staining or taste side effects.
Key findings from the published literature:
A 3-month randomized placebo-controlled clinical trial found that a guava mouthrinse showed clinically comparable outcomes to 0.2% chlorhexidine in maintaining gum health and reducing plaque scores. (PMC, 2019)
An in-vitro study found guava extract showed a 22mm zone of inhibition against S. mutans: the primary cavity-causing bacterium. (PMC, 2025)
São Paulo State University researchers identified a morin-based compound derived from guava as a potential natural substitute for antibiotics in treating periodontal (gum) disease, covered by Fox News and SciTechDaily. (Archives of Oral Biology, 2025)
Why transparency matters to us.
Most supplement brands hide behind "proprietary blends" and vague marketing language. We linked every study above so you can verify every claim yourself. If you have questions about any of the research, email us at info@tryalura.co — we'll respond with the actual evidence, not a script.
A $40 supplement or a $1,500 crown?
The research above makes the math simple.
Aluraâ„¢ Oral Defense
Aluraâ„¢ Oral Defense
