In oral science, transmission errors refer to failures or inaccuracies that occur during the transfer of data, mechanical energy, biological material, or neurological signals. These errors can compromise patient safety, diagnostic accuracy, and treatment outcomes. They generally fall into four main categories:

• Digital and Communication Errors: When capturing digital impressions using intraoral scanners, transmission errors often manifest as "mesh holes" (missing data), "stitching errors" (caused by moving the wand too fast), or distortions caused by saliva. On a human level, diagnostic transmission errors occur when critical clinical information is poorly communicated between dentists, patients, or dental laboratories, which can lead to delayed treatments, ill-fitting restorations, and medical malpractice claims.
• Mechanical Transmission Errors: In precision dental instruments like high-speed handpieces, mechanical transmission errors involve deviations in gear systems, turbine imbalances, or worn bearings. Because these tools operate at speeds up to 400,000 rpm, even microscopic mechanical faults cause the handpiece to vibrate excessively, emit high-pitched noises, and rapidly overheat. This reduces cutting efficiency and risks severely burning the patient's oral tissues.
• Biological Transmission (Cross-Contamination): The transfer of infectious pathogens between patients, clinical staff, and the environment is a critical biological transmission error. In dentistry, this frequently occurs via the aerosolization of saliva and blood by ultrasonic scalers and high-speed drills. It can also occur through "suck-back"—the dangerous backflow of biological fluids into the handpiece turbine and waterlines—if proper sterilization and anti-retraction mechanisms fail.
• Neurobiological Sensory Errors: This involves failures in how the human nervous system transmits sensory signals from the mouth to the brain. Damage to oral sensory nerves (from surgeries, infections, or trauma) can cause the nervous system to remain in a persistent state of high activity. This faulty signal transmission results in "central sensitization," leading to conditions like Burning Mouth Syndrome (BMS) or phantom tastes, where patients experience intense pain or bitter/metallic tastes despite the absence of an actual physical stimulus.

In short, minimizing transmission errors in dentistry requires a combination of strict infection control, precise handling of digital scanning technologies, rigorous maintenance of mechanical handpieces, and clear clinical communication.