Tapered Carbide Burs - 12 blades

Tapered Carbide Burs 7205 and 7714: 12-Blade Composite Finishing Burs

Eagle tapered carbide burs 7205 and 7714 are 12-blade FG composite finishing burs for trimming and finishing composite. They are made of one-piece tungsten carbide, and each pack contains 5 burs.

The straight blade setup has no spiral, so the bur does not pull into the composite. That gives you more control on axial walls and margins, and the ideal blade contact points leave a smoother surface.

Clinical Uses

• Trimming excess composite after curing
• Shaping and finishing axial surfaces of restorations
• Smoothing margins before polishing
• Removing excess cement or residual adhesive

Code Guide

• 7205 – 12-blade tapered finishing bur, FG shank
• 7714 – 12-blade tapered finishing bur, FG shank

Compare the product photos to choose the head size and length that suit your technique.

Why a Tapered Finishing Bur?

A taper bur follows flat and gently convex surfaces in long, even strokes, so it is well suited to facial and lingual walls, proximal line angles and the axial contours of Class II, III and IV composites. Its flat sides help keep surfaces straight where a round or flame shape would leave waves.

Choosing a Composite Finishing Bur Shape

• Tapered: flat facial and lingual walls, proximal line angles and axial contours
• Round end taper: chamfer margins and cervical areas
• Flame: occlusal anatomy, fissures and embrasures
• Bullet: broad convex surfaces

A basic composite finishing kit usually combines a tapered bur for walls with a pointed or rounded shape for anatomy and margins.

How to Use Composite Finishing Burs Step by Step

• Start after full cure of the final increment.
• Trim excess along the margins with the 12-blade taper, keeping the bur moving.
• Shape the axial contours with the side of the bur in light, intermittent strokes.
• Check contacts and occlusion and adjust where needed.
• Refine with a 30-blade carbide or a fine diamond.
• Polish with composite polishing cups, points, discs or paste.

Use a high-speed handpiece at the speed recommended by the handpiece and bur manufacturer, with light pressure and water spray to keep heat down.

Finishing vs Polishing Burs

Composite finishing burs like these shape and smooth the restoration. "Composite polishing burs" usually means rubber or abrasive polishers used afterward to bring up the luster. Carbide finishing comes first; polishing follows.

Tapered Finishing Bur vs Tapered Fissure Bur

Tapered fissure burs (169, 170 and 171) have 6 blades and are operative burs for cutting cavity walls. This 12-blade tapered bur is a finishing bur: it removes less per revolution and is used to trim and smooth composite margins and contours. For the operative version, see our tapered fissure carbide burs.

12-Blade vs 30-Blade Finishing Burs

A 12-blade bur removes material faster and is used for trimming and initial contouring. A 30-blade bur cuts more finely and is used for final finishing. After the carbide finish, polish with a composite polisher.

Carbide or Diamond for Composite Finishing?

Carbide finishing burs cut with blades and give a controlled cut with good feel on composite. Fine and super fine diamonds abrade and are often used on enamel and ceramic. Choose by material and the finish you need.

Cleaning, Sterilization and Bur Life

Before each use, pre-soak in a disinfectant suitable for carbide burs, clean ultrasonically in a bur holder, rinse, dry, pouch and autoclave following your clinic's protocol. Avoid cold sterilizing solutions and hydrogen peroxide, which can degrade tungsten carbide. Discard any bur with chipped blades, corrosion or a bent shank.

Common Mistakes

• Heavy pressure, which chips blades and overheats the composite
• Cutting without coolant
• Using the tip instead of the side on flat surfaces, which can gouge
• Continuing with a dull or clogged bur

Specifications

• Shape: tapered
• Blades: 12, straight (no spiral)
• Shank: FG friction grip for high-speed handpieces
• Material: one-piece tungsten carbide
• Codes: 7205, 7714
• Pack size: 5 burs per pack
• Origin: made in Israel

For more shapes, browse our full range of carbide burs.