What position should the EFDA use while taking mandibular and maxillary impressions?

The operator position is the most effective stance for an Expanded Function Dental Assistant (EFDA) when taking mandibular and maxillary impressions. In this position, the EFDA can maintain optimal visibility and access to the oral cavity, which is crucial for obtaining accurate impressions. This position allows the assistant to have a clear line of sight to both arches and ensures that the impression material can be properly manipulated and placed without obstruction.

Being positioned correctly also helps in maintaining a steady hand while taking impressions, reducing the likelihood of distortion or inaccuracies. It fosters better communication with the dentist and allows the EFDA to be more responsive to the patient's needs during the procedure, enhancing comfort and efficiency.

Other positions, such as standing above the patient or sitting to the side, may hinder the assistant's ability to control the impression process effectively. A reclining position might compromise visibility and ergonomics, making it difficult to achieve a successful outcome. Thus, the operator position is the most suitable choice for this task.