Surveyor
A dental laboratory instrument used to determine the path of insertion and identify parallelism, undercuts, and guide planes on a cast for removable partial denture design.
Full Definition
A dental surveyor is a precision device consisting of a vertical arm with interchangeable analyzing and marking tools, used to survey a stone or digital cast in preparation for removable partial denture design. It identifies the most favorable path of insertion, locates retentive and non-retentive undercuts, confirms adequate guide planes, and allows marking of the survey line (also called the height of contour). Surveying is an obligatory design step for any framework-based removable partial denture. Editors should note that 'surveyor' in this context is a specific dental laboratory instrument and should not be confused with its lay meaning of a construction or land surveyor. The activity is referred to as 'surveying the cast' or 'cast survey,' not 'casting the survey.'
Usage
Usage note: Qualify as 'dental surveyor' on first use if the context includes non-specialist readers who may associate 'surveyor' with construction or land surveying.
In Context
- "The dental technician used a surveyor to identify the path of insertion and mark the survey line on the master cast before designing the RPD framework." — Dental laboratory work order
- "The manuscript described the technician 'using a surveyor,' which the editor noted correctly referred to the dental cast-analyzing instrument, not a construction measurement tool." — Editorial clarification note