Every dentist has their own approach to crown preparation. Choosing the right crown prep burs can make all the difference in efficiency, precision and the quality of your final restoration. Whether you prefer a diamond bur for precision and control or one for fast, effective tooth reduction, understanding how each option performs helps you find the best fit for your clinical approach.
Choosing the Right Crown Prep Bur
When selecting burs for crown prep, dentists often look for the right balance of cutting efficiency, control, and durability. Coarse and extra-coarse diamond burs are typically preferred for crown preparation because they allow for smooth, predictable tooth reduction while minimizing heat and chatter.
DIAO diamonds and Deep Purple™ diamonds represent two distinct approaches to crown prep. Both are engineered to meet specifc clinical needs.
Which one fits your clinical approach best? Explore the differences below to find the best crown prep diamond for your workflow.
DIAO Crown Prep Diamonds:
Designed for the Precise Perfectionist
When precision and control matter most, DIAO is the perfect choice.
DIAO (pronounced DEE-OW) is an innovative coarse diamond that is interspersed with ceramic pearls for smooth, predictable cutting with out chatter or skipping. It removes material easily while letting you stay fully in control of your prep.
Why Clinicians Love DIAO
- Exceptional control for accurate, refined preparations
- Smooth, steady cutting with less vibration and pressure
- Stays sharper longer and resists clogging
- Distinctive rose gold color makes it easy to identify
“DIAO provides smooth and precise performance while giving the doctor an amazing amount of control.” - Dr. John Flucke
“The ease and smoothness of cutting and the durability made preparing teeth much easier.” - Dr. Anthony Vocaturo
Watch DIAO in Action
View all DIAO shapes and sizes.
Deep Purple Crown Prep Diamonds:
Designed for the Speed Seeker
When speed and efficiency matter most, Deep Purple's extra-coarse grit is the right choice.
Deep Purple delivers fast, consistent cutting power. Its extra-coarse grit and large chip spaces make it ideal for quick material removal and reliable performance.
Why Dentists Love Deep Purple:
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Fast, powerful cutting for efficient preps
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Prevents clogging for smooth, uninterrupted cutting due to wide chip spaces
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Durable extra-coarse grit for long-lasting performance
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Perfect for heavy reduction and time-sensitive procedures
TIP: Deep Purple has matching finishing burs to help smooth the prep and refine margins. A popular shape is the tapered chamfer Deep Purple (856XC) and its matching tapered chamfer fine grit finishing diamond (8856).
“The burs are pretty aggressive and cut fast so your preps take a shorter amount of time.” — Lakisha Arif‑Holmes
“The Deep Purple diamonds removed tooth structure cleanly and efficiently … Patients were happy to not have to sit in the chair as long.” — Jeremy Schell
Watch Deep Purple in Action
View all Deep Purple shapes and sizes.
Find the Best Crown Prep Bur for Your Approach
There’s no one-size-fits-all in dentistry. The right diamond depends on your style, your patients, and the results you want to deliver.
Whether you’re the Precise Perfectionist or the Speed Seeker, Komet has you covered to perform at your best.
TIP: Many dentists keep both in their crown prep kits, selecting DIAO for margin refinement and Deep Purple for bulk reduction.
Explore Komet's full crown preparation diamond lineup.