Final answer:
Hi tip isolator is a triangular absorbent pad that is placed in the mouth to block the flow of saliva and protect the tissues
Step-by-step explanation:
The triangular absorbent pad, commonly referred to as a triangular saliva ejector or hi-tip isolator, is placed in the mouth during dental procedures. It is commonly used in dental procedures to prevent contamination and to provide a dry field for the dentist or hygienist to work in. Its primary function is to block the flow of saliva and provide protection to the soft tissues within the oral cavity. This tool is particularly useful during long procedures where the control of saliva is essential to maintain a dry working area and to ensure patient comfort.