When examining a diagnostic cast with a surveyor, what does the survey marker indicate?

When examining a diagnostic cast with a surveyor, what does the survey marker indicate?

• A. Guide plane
• B. Rest seat
• C. Site of termination for the major connector
• D. Undercut area

Answer: (A)

When examining a diagnostic cast with a surveyor, the survey marker is used to indicate the guide plane. A guide plane is a flat area on a tooth surface that helps in the proper alignment and support of removable prostheses, specifically partial dentures. Its primary purpose is to facilitate the correct positioning of the prosthesis in relation to the remaining teeth and to provide stability during function. The surveyor allows the clinician to identify and plan for these guide planes effectively by marking the ideal locations on the diagnostic cast. By having this information clearly indicated, the dentist can design a prosthesis that fits securely and enhances its functionality. In contrast to the guide plane, other options such as the rest seat and the site of termination for the major connector are specific design elements considered later during the detailed design of the prosthesis, while an undercut area indicates a region that may require careful consideration when designing the fit of a removable prosthesis to ensure it doesn't interfere with the proper retention and stability of the device.

When examining a diagnostic cast with a surveyor, the survey marker is used to indicate the guide plane. A guide plane is a flat area on a tooth surface that helps in the proper alignment and support of removable prostheses, specifically partial dentures. Its primary purpose is to facilitate the correct positioning of the prosthesis in relation to the remaining teeth and to provide stability during function.

The surveyor allows the clinician to identify and plan for these guide planes effectively by marking the ideal locations on the diagnostic cast. By having this information clearly indicated, the dentist can design a prosthesis that fits securely and enhances its functionality.

In contrast to the guide plane, other options such as the rest seat and the site of termination for the major connector are specific design elements considered later during the detailed design of the prosthesis, while an undercut area indicates a region that may require careful consideration when designing the fit of a removable prosthesis to ensure it doesn't interfere with the proper retention and stability of the device.