Why is a thick cord preferred during certain dental procedures?

A thick cord is preferred during certain dental procedures primarily because it is effective in reaching deeper sulci. In dental practices, particularly during procedures such as crown impressions or in managing periodontal issues, the depth of the sulcus (the space between the tooth and gum) can be significant. A thicker cord provides sufficient density to displace gingival tissue, allowing for better access to these areas. This is important for accurate impressions or effective treatment, as it helps to ensure that the dental material or instrumentation can adequately reach the necessary depths without damaging the surrounding tissues.

While other factors like patient comfort, visibility, and bleeding management are important aspects of dental procedures, they are not the primary reasons for using a thicker cord in this context. The main goal is to facilitate access to deeper anatomical structures to ensure that the treatment is performed effectively and accurately.