Research may change dental treatment, but a laboratory result, clinical-trial announcement and approved treatment are different things. The studies below do not establish a routine substitute for care you need now.
Tooth-regeneration drug TRG035
Evidence stage: clinical development; no treatment benefit established by the announcement cited here.
Toregem reported on August 17, 2026 that Japan’s PMDA had completed its required investigation of the clinical-trial notification for an exploratory Phase IIa trial of TRG035 for congenital tooth agenesis—teeth missing because they did not develop. The drug is designed around the USAG-1 pathway.
This is a company development update, not a published demonstration that people can regrow teeth lost to decay, injury or gum disease. It is not marketing approval or a promise of availability in Denison or the United States.
Sources: Toregem: August 2026 trial-notification update; Kitano Hospital: background on the first-in-human program.
A protein matrix for enamel repair
Evidence stage: laboratory work on extracted human teeth.
A November 2025 Nature Communications paper describes an engineered protein matrix that helped guide organized mineral growth on eroded enamel and restore measured material properties in laboratory tests. The work suggests a possible approach to enamel repair.
It was not a trial showing lasting benefit in patients. Safety, durability in the mouth and clinical effectiveness need evaluation. This does not regrow a whole tooth or show that established cavities no longer need treatment.
Source: Hasan and colleagues, Nature Communications (2025), DOI 10.1038/s41467-025-64982-y.
Gene transfer to improve saliva production
Evidence stage: ex vivo human tissue study—removed tissue studied in the laboratory.
An August 2026 Oral Diseases paper tested AQP1 gene transfer in salivary-gland biopsy tissue, including samples from people with Sjögren’s disease. Fluid secretion increased in most samples; fibrosis was associated with a poorer response.
The participants were not treated for Sjögren’s dry mouth in this experiment. Results in removed tissue do not establish the safety or benefit of this treatment in people. Current dry-mouth care still starts with assessing the cause and protecting teeth.
Source: Perez and colleagues, Oral Diseases (2026), DOI 10.1111/odi.70179.
How to judge a research headline
- Was it tested in cells, animals, extracted tissue or people?
- Does the study include people with your condition?
- Were patient benefits, side effects and long-term outcomes measured?
- Is the report a peer-reviewed result, a trial announcement or a commercial claim?
Do not postpone urgent or recommended dental care while waiting for an experimental treatment. Ask your dentist how the evidence relates to your circumstances. We do not offer these experimental treatments or arrange trial enrollment.
Common problems and established treatment options · How this site uses sources
Sources checked October 23, 2026. This is general education compiled from the linked sources, not a diagnosis or individual treatment recommendation. These pages have not been independently reviewed by a clinician.