The modern toothbrush head often features a textured grid on its back, opposite the bristles. This common design element is often misunderstood by users. The purpose of this molded surface is entirely separate from cleaning the enamel and gumline, serving instead as a convenient, built-in device for hygiene beyond the teeth.
The Role of the Textured Back
The primary function of the textured back is to act as a tongue scraper. This surface is engineered to remove the layer of bacteria, mucus, and food debris that accumulates on the tongue’s porous surface. Unlike the bristles, which clean hard enamel, the soft, flexible material of the back is designed for the delicate tissue of the tongue.
This textured tool gently scrapes the oral tissues to lift and trap the thin layer of buildup, known as biofilm. It also cleans the inner surfaces of the cheeks and the roof of the mouth, helping to reduce the overall bacterial load in the oral cavity. Studies show that the integrated scraper can be just as effective at reducing tongue bacteria and improving breath odor as a standalone tool.
Proper Technique for Use
To use this feature, integrate the process into the final steps of your daily oral care routine, after brushing your teeth. Flip the brush head so the textured side faces your tongue. Place the back of the brush head as far back as you can comfortably reach without triggering a gag reflex.
Using light and steady pressure, pull the brush forward toward the tip of the tongue, effectively scraping the surface. Use a gentle but firm motion to avoid irritating the tissue. Rinse the brush head under water after each pass to wash away collected debris, then repeat the motion two or three times to cover the entire surface. This technique should be performed daily for consistent hygiene.
Why Non-Tooth Cleaning Matters
Cleaning the soft tissues of the mouth is important for managing the oral microbiome, as the tongue is a major reservoir for bacteria. The tongue’s rough surface, covered in tiny projections called papillae, traps microorganisms and dead cells, creating an environment for bacterial growth.
Anaerobic bacteria thriving here metabolize food particles and proteins, resulting in the production of volatile sulfur compounds (VSCs). These VSCs, such as hydrogen sulfide and methyl mercaptan, are the primary cause of halitosis, or bad breath. Regularly removing this bacteria-rich biofilm directly addresses the source of VSCs, supporting fresher breath and better overall oral health.