WHEN PATIENTS DECLINE FLUORIDE:
Evidence-based alternatives for caries risk management
Fluoride remains the cornerstone of modern caries prevention, supported by decades of evidence demonstrating its ability to reduce demineralization and promote remineralization. However, some patients continue to express concerns regarding fluoride exposure or decline fluoride-containing products altogether. While patient education remains essential, clinicians should also be familiar with evidence-based alternatives that may support caries risk management when fluoride therapy is not accepted.
NON-FLUORIDE THERAPIES
Several non-fluoride therapies have emerged as potential adjuncts for patients who decline fluoride. Hydroxyapatite (HAP), particularly nano-hydroxyapatite, has gained considerable attention as a biomimetic remineralization agent. Because it is chemically similar to enamel, it may integrate into microscopic surface defects and reduce sensitivity.
Peptides, specifically self-assembling peptides, have also emerged as a promising option, promoting remineralization by forming a scaffold that attracts calcium and phosphate ions to facilitate new hydroxyapatite formation.
Xylitol and arginine-containing products may help reduce cariogenic activity by influencing bacterial metabolism and oral pH, while CPP-ACP products provide bioavailable calcium and phosphate ions that support remineralization. Theobromine has also shown promise as an emerging agent capable of enhancing enamel crystal formation.
Additional approaches, including probiotics and chlorhexidine-thymol varnishes, continue to be investigated for their potential role in biofilm modification and root caries management.
CLINICAL CONSIDERATIONS
While fluoride remains the gold standard for caries prevention, no alternative currently possesses the same breadth of evidence. When patients decline fluoride therapy, clinicians should avoid an “all-or-nothing” approach by incorporating evidence-based alternatives alongside oral hygiene instruction, dietary counselling, risk assessment, and routine professional care. These therapies provide additional options while maintaining a preventive, risk-based approach to care.
References can be viewed on our website: www.oralhealthgroup.com
Christie Turcotte, RDH
Christie, a dental hygienist and clinical manager who has been with Clarence Street Dental Group for 25 years, brings extensive experience and leadership to the team, supporting clinical excellence and mentorship across the practice. She oversees IPAC implementation and evaluation, plays a key role in Health and Safety, and is actively involved in practice and facility maintenance to ensure a safe and high-performing clinical environment.
Rosy Huynh, RRDH, B.Sc
Rosy has been with CSDG for over a decade, practicing restorative dental hygiene and contributing in a clinical management role. Together with Christina Turcotte, she is committed to fostering team development and delivering patient-centred care.
| Therapy | Primary Mechanism | Clinical Applications |
|---|---|---|
| Hydroxyapatite | Remineralization | Early enamel lesions, sensitivity |
| Peptides | Remineralization | Early enamel lesions, enamel remineralization |
| Xylitol | Reduced bacterial metabolism | Moderate caries risk, dry mouth |
| Arginine | pH buffering | Acidogenic biofilms |
| CPP-ACP | Calcium/phosphate delivery | White spot lesions, orthodontic patients |
| Theobromine | Enamel crystal enhancement | Emerging preventive option |
| Probiotics | Oral microbiome modulation | Adjunctive caries management |
| Chlorhexidine-Thymol Varnish | Antimicrobial action | Root caries prevention |
Table 1. Comparison of selected non-fluoride preventive therapies and their primary mechanisms of action.
REFERENCES
- Amaechi, B. T., AbdulAzees, P. A., Alshareif, D. O., Shehata, M. A., Lima, P. P., Abdollahi, A., Kalkhorani, P. S., Evans, V., & Hassan, A. (2019). Comparative efficacy of a hydroxyapatite and a fluoride toothpaste for prevention and remineralization of dental caries in children. BDJ Open, 5, Article 18. https://doi.org/10.1038/s41405-019-0026-8
- Aparna, B. K., Yashoda, R., & Puranik, M. P. (2022). Remineralization of early enamel caries lesions using self-assembling peptides P11-4: Systematic review and meta-analysis. Journal of Oral Biology and Craniofacial Research, 12(3), 324–331. https://doi.org/10.1016/j.jobcr.2022.03.012
- Cagetti, M. G., Mastroberardino, S., Milia, E., Cocco, F., Lingström, P., & Campus, G. (2013). The use of probiotic strains in caries prevention: A systematic review. Nutrients, 5(7), 2530–2550. https://doi.org/10.3390/nu5072530
- Ma, X., Lin, X., Zhong, T., & Xie, F. (2019). Evaluation of the efficacy of casein phosphopeptide-amorphous calcium phosphate on remineralization of white spot lesions in vitro and clinical research: A systematic review and meta-analysis. BMC Oral Health, 19, Article 295. https://doi.org/10.1186/s12903-019-0977-0
- Ortiz-Sáez, B., Aguilella-Traver, M., Hernández-Pando, C., Martínez-Salmerón, E. M., Muñoz-Barrio, J. E., & Gómez-Moreno, G. (2024). Is xylitol effective in the prevention of dental caries? A systematic review. Journal of Clinical and Experimental Dentistry, 16(10), e1307–e1315. https://doi.org/10.4317/jced.62008
- Philip, N. (2019). State of the art enamel remineralization systems: The next frontier in caries management. Caries Research, 53(3), 284–295. https://doi.org/10.1159/000493031
- Shaalan, O., El-Sayed, K. F., & Abouauf, E. (2024). Evaluation of the remineralization potential of self-assembling peptide P11-4 with fluoride compared to fluoride varnish in the management of incipient carious lesions: A randomized controlled clinical trial. Clinical Oral Investigations, 28, Article 438. https://doi.org/10.1007/s00784-024-05822-z