New Sugarcane-Based Artificial Saliva Protects Teeth and Fights Decay

Researchers have developed a new type of artificial saliva using a lab-modified sugarcane protein that provides a protective barrier for teeth against acid and bacterial decay. The innovation, delivered as a mouthwash, is designed to mimic the natural protective functions of saliva, which is critical for maintaining oral health.

The development was led by scientists at the Bauru School of Dentistry at the University of São Paulo (FOB-USP) in Brazil. The research was conducted during the doctoral work of Natara Dias Gomes da Silva and the findings were published in the Journal of Dentistry.

The Role of CANECPI-5

The central component of this artificial saliva is a sugarcane-derived protein known as CANECPI-5. This specific protein is engineered to bind directly to tooth enamel, creating a physical shield over the teeth.

This protective layer defends the enamel from various acidic threats, including acids found in alcohol and fruit juices, as well as acids originating from the stomach. By forming this barrier, the protein helps prevent the acid-driven erosion and decay that typically occur when natural saliva is insufficient.

Clinical Applications and Efficacy

The artificial saliva shows particular promise for patients suffering from head and neck cancer. These individuals often undergo radiotherapy near the mouth, a treatment that can damage the salivary glands and significantly reduce the body’s ability to produce natural saliva.

Because natural saliva is essential for controlling bacteria and protecting enamel, its loss leaves cancer patients highly susceptible to severe dental problems and rapid tooth decay. This sugarcane-based solution aims to fill that gap by providing a synthetic defense mechanism.

Early testing indicates that the efficacy of CANECPI-5 is further enhanced when it is used in conjunction with other traditional oral health agents. Specifically, the protein works more effectively when paired with:

• Fluoride
• Xylitol

The combination of the sugarcane protein with these agents has been shown to significantly reduce overall damage to the teeth compared to using the protein alone.

Scientific Context of Salivary Loss

Saliva serves as a primary defense system in the oral cavity, neutralizing acids and washing away food particles and bacteria. When production fails—a condition often resulting from medical interventions like radiation—the mouth loses its ability to buffer the pH levels of the enamel.

By leveraging the adhesive properties of the CANECPI-5 protein, the researchers at the University of São Paulo have created a way to maintain this protection externally. The ability of the protein to adhere to the enamel ensures that the shield remains in place to combat harmful bacteria and acidic environments.