The angle of the bevel of the HVE tip should always be:

The angle of the bevel of the high-volume evacuator (HVE) tip should be positioned parallel to the buccal or lingual surfaces to effectively capture and remove debris, saliva, and water from the oral cavity during dental procedures. This orientation allows for optimal suction directly where it is needed, minimizing the risk of aspirating materials that could obstruct visibility or contaminate the workspace. When the bevel is aligned this way, it enhances the efficiency of the suction and helps keep the area dry, improving the overall effectiveness of the dental procedure.

The bevel should not be at right angles to the buccal and lingual surfaces, as this would hinder suction capability and not allow for efficient debris removal. Similarly, positioning the bevel parallel to the occlusal surface is not optimal because it does not direct the suction toward the areas where debris is predominantly located during procedures. Lastly, while comfort is important for the dental assistant, the positioning of the HVE tip should prioritize functional efficiency rather than personal comfort, ensuring that the procedure is carried out effectively and safely.