Soothes the nerve signal behind the everyday twinge.
Potassium Nitrate.
Potassium ions diffuse along the dentinal tubule and depolarise the nerve, so the tooth simply stops over-reporting pain. It is one of the most studied desensitising mechanisms we have.
Dr Surina SehgalFounding Dentist at S3
Rebuilds the enamel surface that exposes the nerve.
Nano-hydroxyapatite.
Hydroxyapatite is the mineral your enamel is already made of. At a nano scale it slots into the surface lattice and physically occludes the open tubules — you are repairing like with like.
Dr Surina SehgalFounding Dentist at S3
Shields the surface from the acids that wear it thin.
Biomimetic hydroxyapatite.
Biomimetic hydroxyapatite is a near-perfect match for the mineral your enamel is already built from. It bonds to the surface and lays down a fresh mineral layer — a shield made from the same material the tooth already trusts.
Dr Surina SehgalFounding Dentist at S3
Effectiveness of carbonate hydroxyapatite toothpaste on dentine hypersensitivity (in Saudi Arabia)
Zn-carbonate HAP significantly reduced DH.
Clinical efficacy of nano-hydroxyapatite in dentin hypersensitivity: A systematic review and meta-analysis
n-HAP showed greater DH relief vs comparators on evaporative and tactile stimuli; no difference on cold stimuli. High-quality evidence per GRADE.
Clinical efficacy of nano-hydroxyapatite associated with laser therapy in the treatment of dentin hypersensitivity
n-HAP + laser improved DH outcomes.
Clinical efficacy of Nano-XIM nano-hydroxyapatite toothpaste vs fluoride and placebo for DH
n-HAP toothpaste outperformed fluoride and placebo on DH.
Nano-P (nano-hydroxyapatite) toothpaste vs fluoride/placebo for DH
Nano-P significantly reduced DH vs comparators.
Effect of a 20% nano-hydroxyapatite cream on dentin hypersensitivity (8-week study)
20% nano-HAp cream reduced DH significantly over 8 weeks.
Comparative effectiveness of nano-hydroxyapatite (10% and 15%) ± potassium nitrate vs calcium sodium phosphosilicate dentifrices for dentin hypersensitivity: an 8-week randomized control trial
Toothpaste with nano-HAP (10% or 15%) alone or with KNO3 was as effective as CSPS for DH symptoms. Significantly lower cold air and tactile sensitivity at 2 and 4 weeks for nano-HAP group.
Comparative evaluation of 1% nano-hydroxyapatite vs Pro-Argin desensitizing dentifrice
1% n-HAP showed comparable or superior DH reduction vs Pro-Argin.
Efficacy of a 3% potassium nitrate desensitizing mouthrinse in the treatment of dentinal hypersensitivity
3% KNO3 mouthrinse + fluoride toothpaste produced significantly greater evaporative DH reduction at 4 and 8 weeks. Tactile reduction only in KNO3 group.
Comparing the efficacy in providing instant relief of dentine hypersensitivity of a new toothpaste containing 8.0% arginine, calcium carbonate, and 1450 ppm fluoride relative to a benchmark desensitising toothpaste containing 2% potassium ion and 1450 ppm fluoride, and to a control toothpaste with 1450 ppm fluoride
Arginine product showed instant relief vs both KNO3 and control.
Desensitising toothpaste versus placebo for dentine hypersensitivity: a systematic review and meta-analysis
Desensitising toothpastes containing KNO3, strontium, arginine, or stannous showed statistically significant DH relief vs placebo.
15% hydroxyapatite gel for dentin hypersensitivity
15% HAP gel reduced DH.
Nano-P (nano-hydroxyapatite) + fluoride gel for DH
n-HAP + fluoride gel reduced DH.
Effect of three desensitizing toothpastes on dentinal tubule occlusion and dentin hardness
Three desensitising toothpastes (including HAp-based) occluded tubules; hardness varied by product.
Renamel After-Bleach nano-hydroxyapatite for post-bleaching sensitivity
n-HAP cream reduced post-bleaching DH.
Home Oral Care with Biomimetic Hydroxyapatite vs. Conventional Fluoridated Toothpaste for the Remineralization and Desensitizing of White Spot Lesions: Randomized Clinical Trial
bHAP group: significant Schiff Air Index sensitivity reduction at 90 days; fluoride group: no significant change. Marked mineral deposition on enamel.
Zinc-HAp paste for MIH (molar-incisor hypomineralisation)
Zn-HAp significantly improved sensitivity and MIH-TNI scores.
HAp-fluoride caries progression primary + permanent dentition
HAp-fluoride reduced caries progression by 38–39% risk reduction.
HAp-fluoride combination for caries / oral health
HAp-fluoride combination produced greatest pH increase and reduced cariogenic bacteria.
10% HAP + TCP toothpaste for DH
HAP + TCP toothpaste reduced DH.
Clinical and Technological Evaluation of the Remineralising Effect of Biomimetic Hydroxyapatite in a Population Aged 6 to 18 Years: A Randomized Clinical Trial
bHAP toothpaste produced significant remineralisation in paediatric/adolescent population.
Recent advances in dentin hypersensitivity: clinically proven treatments for instant and lasting sensitivity relief
Reviewed clinical evidence across multiple DH actives.
Nano-P (nano-hydroxyapatite) vs Pro-Argin/placebo for DH
n-HAP performed comparably to Pro-Argin on DH; both better than placebo.
Nano-P professional application for DH
Professional n-HAP application reduced DH.
20% nano-carbonate-apatite vs placebo for DH
20% n-CAP significantly reduced DH vs placebo.
Weekly HAP vs monthly NaF post-IPR enamel remineralization
Weekly HAP slightly superior to monthly NaF for post-IPR remineralisation.
10% HAP for MIH (molar-incisor hypomineralisation)
HAP improved MIH-related sensitivity outcomes.
Eight-week clinical efficacy study of a new dentifrice containing 8% arginine, calcium carbonate, and a high level of fluoride for prevention and treatment of dentine hypersensitivity
Arginine regimen produced significantly greater DH reduction than KNO3 regimen and control over 8 weeks.
Enamel remineralization and repair results of Biomimetic Hydroxyapatite toothpaste on deciduous teeth: an effective option to fluoride toothpaste
bHAP toothpaste effective option vs fluoride for deciduous teeth remineralisation.
Fluoride + HAp vs fluoride + CPP-ACP vs NaF alone for remineralization
Fluoride + HAp more effective than fluoride + CPP-ACP or NaF alone for remineralisation.
Remineralization and repair of enamel surface by biomimetic Zn-carbonate hydroxyapatite containing toothpaste: a comparative in vivo study
Zn-carbonate bHAP toothpaste produced marked enamel surface mineral deposition in vivo.
30% n-HAP vs CPP-ACP/NaF for DH
30% n-HAP performed comparably to CPP-ACP and NaF.
The Effect of Toothpastes Containing Hydroxyapatite, Fluoroapatite, and Zn-Mg-Hydroxyapatite Nanocrystals on Dentin Hypersensitivity: A Randomized Clinical Trial
Various HAP nanocrystal formulations all reduced DH.
Comparative evaluation of remineralization potential of nanohydroxyapatite crystals, bioactive glass, casein phosphopeptide-amorphous calcium phosphate, and fluoride on initial enamel lesion (SEM analysis) – an in vitro study
At just 6.5% nHAp, paste showed significant surface-microhardness recovery and outperformed fluoride and other remineralising agents on artificially created early enamel lesions.
n-HAP vs NovaMin for DH
n-HAP performed comparably to NovaMin on DH.
HAp + ozone therapy for DH
Combined HAp + ozone most effective; ozone alone outperformed HAp alone.
17% hydroxyapatite variations for DH
17% HAP variants reduced DH.
Synthetic vs plant-based HAp chewing gum calcium delivery
Synthetic HAp delivered significantly more calcium ions than plant-based variants.
Powder jet-applied HAp vs in-situ calcium phosphate for DH
Both formulations equally reduced DH.
In vitro tubule occlusion of HAp
HAp occludes tubules under SEM.
A superior desensitizer—potassium nitrate
Tested 1%, 2%, 5%, 10%, 15% saturated solutions and 10% paste — all forms produced favourable desensitising results. Foundational paper establishing KNO3 as a DH agent.
Three different desensitizing agents for in-office relief of DH: 4-week clinical study
15% n-HA most effective for DH reduction after single application up to 4 weeks; followed by 8% arginine and 5% NovaMin.
Comparing the effectiveness of four desensitizing toothpastes on dentinal tubule occlusion: a scanning electron microscope analysis
15% nanoXIM·CarePaste achieved the highest dentinal tubule occlusion (66.13%) after 14 days of 2-minute daily use, ahead of Remin Pro (65.04%) and Pepsodent Pro-Sensitive (56.28%).
Comparing three desensitizing agents including nano-HAP, NovaMin, and arginine over 4 weeks
n-HAP was the most effective of the three for DH after single application and over 4 weeks.
Hydroxyapatite-containing dentifrice clinical evaluation
HAP dentifrice reduced DH.
A randomised clinical trial to assess the efficacy of two desensitising dentifrices
Both improved DH; arginine had faster onset.
Biomimetic hydroxyapatite (Kalident SP): cumulative calcium-ion release at pH 7.0 and 5.0
"Smart" calcium delivery: calcium ions are released from the crystal structure on demand when oral pH drops after eating (tested at pH 5.0 vs 7.0).
Biomimetic hydroxyapatite (Kalident SP): enamel adhesion / physiological similarity (SEM)
Biomimetic HAp shows high affinity and physiological similarity to enamel; ~30% enamel coverage reported at a 10% bioHAp level, with adhesion shown without adhesion boosters.
Biomimetic hydroxyapatite (Kalident SP): remineralised enamel-layer thickness vs other actives (polarised-light microscopy)
Biomimetic HAp produced improved remineralised-layer thickness compared with other calcium-mineral actives after a single brushing in a demineralisation/remineralisation cycling model.
Biomimetic hydroxyapatite (Kalident SP): in vivo antihypersensitivity panel test
5% Kalident, 3x/day for 28 days in 50 panellists: >80% reported sensitivity reduction by day 28; ~47% felt less hot-beverage and 50% less cold-beverage sensitivity.
HAP vs fluoride/strontium chloride for DH
HAP comparable to fluoride and strontium for DH.
The efficacy of strontium and potassium toothpastes in treating dentine hypersensitivity: a systematic review
Both KNO3 and strontium toothpastes had benefit vs placebo for DH; insufficient evidence to favour one over the other.
10% HAP vs strontium chloride for DH
10% HAP comparable to strontium for DH.
10% HAP vs strontium chloride for DH (8 weeks)
10% HAP non-inferior to strontium chloride over 8 weeks.
Evaluation of the efficacy of potassium nitrate and sodium fluoride as desensitizing agents during tooth bleaching treatment — a systematic review and meta-analysis
KNO3 + fluoride desensitisers effective for bleaching-induced sensitivity.
0.5% vs 0.1% n-HAP for DH
Higher-dose n-HAP showed greater DH benefit.
An In-vitro Comparison of Nano Hydroxyapatite, Novamin and Proargin Desensitizing Toothpastes - A SEM Study
n-HAP 97.62% tubule occlusion; NovaMin 81.9%; Pro-Argin 65.42%. Significant n-HAP vs Pro-Argin (p<0.005); n-HAP vs NovaMin not significant (p=0.235).
20% n-CAP vs strontium/laser for DH
20% n-CAP comparable to strontium and laser.
Clinical Evidence of Biomimetic Hydroxyapatite in Oral Care Products for Reducing Dentin Hypersensitivity: An Updated Systematic Review and Meta-Analysis
HAp products significantly reduced DH vs placebo (39.5%, 95% CI 30.1-48.9) and vs fluoride (23% greater reduction, 95% CI 11.8-34.2). Non-significant trend vs other desensitisers.
Nano-P pre-bleaching for sensitivity prevention
n-HAP reduced post-bleaching sensitivity.
HAP with MFP and KNO3 for DH
Combination HAP/KNO3/fluoride formulation reduced DH.
Apadent Total Care (HAP) for DH
HAP toothpaste reduced DH.
6% Nano-HAP paste + liquid for DH
6% n-HAP combination reduced DH.
Desensitizing toothpastes for dentin hypersensitivity: A network meta-analysis
Formulations with stannous, potassium, and arginine provided short- and long-term DH relief by air blast and tactile stimuli.
Clinical evaluation of potassium nitrate desensitizing mouthwash and toothpaste
KNO3 mouthwash + toothpaste regimen reduced DH.
Immediate Effects of Biomimetic Hydroxyapatite Toothpaste and Mouthwash on Dentin Hypersensitivity: A Randomized Controlled Trial
Both bHAp toothpaste and high-density bHAp mouthwash significantly reduced DH 30 seconds after application.
Clinical evaluation of a potassium nitrate dentifrice for the treatment of dentinal hypersensitivity
5% KNO3 dentifrice significantly reduced cold and tactile DH vs placebo.
In vitro study to evaluate the ability of nano-hydroxyapatite present in nanoXIM·CarePaste solutions to adsorb on tooth enamel surface
nHAp adsorbs onto enamel via its rod-like morphology and crystalline lattice; ~100% enamel surface coverage by SEM at a 12% nHAp suspension, with full coverage achievable even below 2% active.
Remineralización con nanoXIM·CarePaste (postgraduate thesis)
10% nanoXIM·CarePaste produced the most uniform remineralisation; by day 12 enamel porosities were largely sealed.
The efficacy of potassium salts as agents for treating dentin hypersensitivity
Reviewed clinical efficacy of potassium salts (KNO3, KCl, K-citrate) in DH; mechanistically and clinically supported.
A double-blind randomized-controlled trial comparing the desensitizing efficacy of a new dentifrice containing carbonate/hydroxyapatite nanocrystals and a sodium fluoride/potassium nitrate dentifrice
Zn-carbonate biomimetic HAP nanocrystal dentifrice significantly reduced DH at 4 and 8 weeks. Outperformed KNO3/NaF on air-blast primary outcome.
30% Zn-carbonate HAP vs arginine/strontium for DH
Zn-carbonate HAP comparable or superior to arginine and strontium for DH.
Effect of two different desensitizing dentifrices on DH
KNO3 dentifrice reduced DH.
Microcrystalline HAP toothpaste for DH
Microcrystalline HAP reduced DH.
Hydroxyapatite vs fluoride caries prevention primary dentition (12 months)
HAP non-inferior to fluoride for caries prevention.
Hydroxyapatite vs sodium fluoride caries prevention 18-month adult RCT
HAP non-inferior to NaF in caries prevention.
20% n-HAP for DH
20% n-HAP reduced DH.
HAP chewing gum for DH
HAP chewing gum showed some DH benefit.
Potassium containing toothpastes for dentine hypersensitivity (Cochrane review)
Air-blast SMD -1.25 (95% CI -1.65 to -0.85) favouring KNO3. Tactile SMD 1.19 (95% CI 0.79-1.59) favouring KNO3. Subjective assessment non-significant.
Comparative clinical efficacy of a dentifrice containing calcium sodium phosphosilicate to a dentifrice containing potassium nitrate and to a placebo on dentinal hypersensitivity: a randomized clinical trial
Significant DH reduction in both KNO3 and NovaMin groups vs placebo. NovaMin showed statistically greater reduction than KNO3 at 2 and 4 weeks.
Comparative evaluation of diode laser, stannous fluoride gel, and potassium nitrate gel in DH
Both laser and dentifrices reduced DH; magnitude varied.
Clinical Efficacy Of Hydroxyapatite Containing Toothpaste In Relieving Dentine Hypersensitivity (2024-2025)
HAP toothpaste showed significant Schiff index improvement vs placebo after 6 weeks.
A randomized controlled clinical study evaluating the efficacy of two desensitizing dentifrices
Both KNO3 and NovaMin dentifrices reduced DH.
Efficacy of a dentifrice containing potassium nitrate, soluble pyrophosphate, PVM/MA copolymer, and sodium fluoride on dentinal hypersensitivity
After 12 weeks: significant improvements in tactile, thermal, and air-blast sensitivity vs placebo.
Efficacy of a dentifrice containing 5% potassium nitrate and 1500 PPM sodium monofluorophosphate in a precipitated calcium carbonate base on dentinal hypersensitivity
Significant DH reduction with 5% KNO3 + fluoride dentifrice.
A randomized clinical trial of the desensitizing efficacy of three dentifrices
KNO3 dentifrices showed significant DH reduction.
Zinc-HAp vs CSPS in children
Zn-HAP and CSPS showed similar clinical improvement.
Comparative desensitizing effect of a toothpaste and mouthwash containing potassium nitrate: an in vivo and in vitro scanning electron microscopic study
Both 3% and 5% potassium nitrate reduced sensitivity within one month; 5% KNO3 toothpaste gave greater relief (especially cold-water pain) and produced partial-to-complete tubule occlusion on SEM, while the mouthwash did not occlude tubules.
KNO3/Al/HAP/MFP combination for DH
Multi-active formulation reduced DH.
Clinical study comparing oral formulations with calcium sodium phosphosilicate, potassium nitrate, and stannous fluoride
All three actives showed DH reduction; degrees varied.
HAP powder/liquid vs placebo for DH
HAP powder/liquid reduced DH vs placebo.
The sensitivity-reducing effect of a potassium nitrate-sodium monofluorophosphate dentifrice
Significant DH reduction with KNO3 + MFP dentifrice.
Assessing the efficacy of three dentifrices in the treatment of dentinal hypersensitivity
5% KNO3 dentifrice significantly reduced DH vs placebo on all measured indexes after 4 weeks.
Evaluation of efficiency of two nanohydroxyapatite remineralizing agents with a hydroxyapatite and a conventional dentifrice: a comparative in vitro study
nHAp dentifrice gave superior protection against demineralisation around orthodontic brackets and better remineralisation than fluoride toothpaste alone under an in-vitro pH-cycling challenge.
A new desensitizing dentifrice — an 8-week clinical investigation
Significant DH reduction with KNO3-containing dentifrice over 8 weeks.
Synergistic efficacy of a biomimetic hydroxyapatite-citrate complex for dentin hypersensitivity: an in vitro and clinical study
bHAP-citrate complex toothpaste produced Schiff and Yeaple score improvements of 21.39% and 100.85% at 8 weeks vs placebo.
Evaluation of the remineralization potential of two non-fluoridated remineralizing pastes using SEM with energy-dispersive X-ray analysis: a randomized controlled in-vitro trial
10% nHAp paste was the most effective concentration for remineralising initial enamel lesions and gave optimal preventive potential against demineralisation vs other non-fluoridated pastes.
Pulpal effects of brushing with 5% potassium nitrate paste used for relief of dentinal hypersensitivity
5% KNO3 paste provided significant relief from DH within 1 week, increasing over 4 weeks. Pulpal safety confirmed.
Topical application of a desensitizing agent containing potassium nitrate before dental bleaching: a systematic review and meta-analysis
Pre-bleach KNO3 reduced bleaching-induced sensitivity.
Enamel and dentine remineralization by nano-hydroxyapatite paste
n-HAp pastes promoted remineralisation.
15% nHAP vs fluoride/placebo for DH
15% n-HAP toothpaste outperformed fluoride and placebo on DH.
2% nHAP in bleaching gel for sensitivity
n-HAP in bleaching gel reduced sensitivity.
Reducing dentine hypersensitivity with nano-hydroxyapatite toothpaste: a double-blind randomized controlled trial
n-HAP gel toothpaste (fluoride-free) effective desensitising agent at 2 and 4 weeks.
1% nHAP vs KNO3/propolis for DH
n-HAP comparable to KNO3 and propolis.
Home treatment protocol for DH with HAp-based biodynamic toothpaste and lactoferrin: pilot study
HAp + lactoferrin home protocol reduced DH.
Effects of nano-HAp on in vitro tubule occlusion
n-HAp occluded tubules in vitro.
Nano-P professional + home care for DH
Combined professional + home n-HAP application reduced DH.
Effect of a new toothpaste containing potassium nitrate and triclosan on gingival health, plaque formation and dentine hypersensitivity
KNO3-containing toothpaste improved both gingival health markers and DH.
A 2-week dentifrice trial of patient-reported sensitivity: comparison of strontium acetate, potassium nitrate, and a placebo toothpaste
Both KNO3 and strontium showed DH reduction; placebo effect notable.
Effect of HAp/fluoride toothpaste on enamel remineralization
FLAG: HAp toothpastes did NOT show dose-dependent remineralisation in this caries study; only fluoride did. Negative finding for remineralisation in cariology context.
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