Description
The **Prima Round Diamond Bur 801** is a spherical-headed diamond bur from the **Prima Classic** series. It is available in multiple head diameters and selected grit grades, with standard and surgical-length versions. This guide introduces its applications, selection considerations and key product features.
About Prima Dental
Prima Dental is a British manufacturer of dental rotary instruments with a manufacturing heritage spanning more than 150 years. The brand offers diamond, carbide and steel burs for a range of dental applications.
Prima Classic diamond burs feature stainless steel shanks and natural diamond particles. The series includes a variety of shapes, sizes and grit grades to suit different preparation requirements.
What Is the Prima Round Diamond Bur?
The Prima Round Diamond Bur has a spherical head designed for localised removal and shaping of hard tooth tissue during appropriate stages of preparation. The extent and precision of removal depend on the bur size, grit grade and the dentist’s technique.
The standard round model in this series is identified by the code **801**. Diamond particles on the head remove hard tissue through abrasion as the bur rotates.
Its spherical geometry allows the dentist to create initial depressions and refine curved surfaces in areas suited to the dimensions of the bur head.
Applications of the Prima Round Diamond Bur
The choice of a round diamond bur depends on its head diameter, grit grade, treatment site and the amount of tissue removal required. These factors guide instrument selection for each stage of preparation.
Initial Cavity Preparation
The spherical head can be used to create an initial depression and begin cavity preparation in hard tooth structure. The selected bur size should be appropriate for the dimensions of the treatment area.
Localised Removal of Hard Tooth Tissue
The round diamond bur enables hard tissue removal in specific areas. The amount removed depends on the grit grade, applied pressure, contact time and operating technique.
Refining Internal Cavity Contours
The rounded head can help create or refine curved surfaces during certain stages of cavity preparation. Selecting an appropriate diameter helps match the instrument to the working area.
Tooth Preparation for Restorations
This bur can be used as part of the instrument sequence for restorative preparation. Selection should reflect the condition of the tissue, the treatment plan and the requirements of each stage.
**Round diamond burs and round carbide burs work differently.** Diamond burs remove material through abrasion, while carbide burs use cutting edges. The choice should therefore suit the tissue being treated and the preparation stage.
Choosing the Right Prima Round Diamond Bur
Head diameter, grit grade and instrument length are important selection factors. The shape code 801 alone does not fully identify the product.
Selecting the Head Diameter
The Prima Round Diamond Bur is available in several head diameters. Head size influences the potential contact area and should be appropriate for the available space and preparation requirements.
Smaller diameters: for restricted areas and smaller preparations.
Medium diameters: for preparations proportionate to the dimensions of the treatment area.
Larger diameters: for a broader contact area where appropriate.
For example, 801/014 indicates a nominal head diameter of 1.4 mm, while 801/018 indicates a nominal diameter of 1.8 mm. These designations should be checked alongside the grit grade and other product details.
Selecting the Grit Grade
Diamond particle size affects abrasive action and the resulting surface finish. The grit grades listed for the Prima Round Diamond Bur range include:
Coarse: for greater material removal where appropriate.
Medium: for preparation requiring moderate abrasive action.
Fine: for finer surface refinement and finishing.
Extra Fine: for very fine surface refinement.
Not every grit grade is available in every diameter. The required size and grit combination should be checked against the specification table for the selected product.
Selecting the Instrument Length
Alongside the standard version, Prima offers a Round Surgical Length version.
The standard model has an overall length of 19 mm, while the surgical-length version measures 28 mm. The longer version may be considered where additional reach is required. Length selection must take account of the working space, procedure and operating requirements.
Handpiece Compatibility
Before use, confirm the shank type and compatibility with the intended handpiece. The permissible operating speed and working conditions must comply with the instructions for both the bur and the handpiece.
Correct seating and secure retention are essential parts of instrument preparation.
Key Product Specifications
The listed sizes and grit grades describe the range and do not indicate that every combination is available. Specifications must be checked against the packaging and documentation for the selected version.
Care and Maintenance
Inspect the bur for wear or damage before use and confirm that it is correctly seated in the handpiece. Worn or damaged burs can impair performance.
Operating speed, cooling and applied pressure should follow the manufacturer’s instructions and the requirements of the procedure. Cleaning and preparation for reuse must also follow the instructions applicable to the specific product.
**For more information about the Prima Round Diamond Bur, available sizes and stock availability, or to request a quotation, please contact Mahta Teb Sina.**
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