PermaFlo Purple Indicating Composite: Clinical Uses
By Ultradent Products, Inc. | Published: 2026-10-14
Category: Product Reviews
A practical buying guide to PermaFlo Purple, the light-cured anatomical indicating composite. Learn when its coronal seal identification helps, when it does not, and how to pair it with the right adhesive.
Quick answer
PermaFlo Purple is a light-cured anatomical indicating composite used with an adhesive system to create an easily identified coronal seal. It is the right choice when you need to see exactly where a flowable seal sits under or around a restoration, and it is not the right choice when you need a color-matched final surface. Pair it with a universal adhesive such as Peak Universal Bond, and confirm your indication and depth needs before ordering.
What the purple color actually does for you
The value of an indicating composite is visual, not structural. A purple coronal seal is easy to distinguish from dentin, enamel, and most restorative materials, so you can verify coverage and depth at a glance instead of guessing. That matters most in deep preparations, around margins, and in any situation where a clear or tooth-colored flowable would blend into the substrate.
Because the color is the feature, treat it as a checkpoint material rather than a final esthetic layer. If the restoration will be visible, plan to cover or replace the indicating layer with a tooth-colored material. If the area is hidden, the purple seal can remain as a documented, easily identified layer.
Where it fits in a restorative workflow
A light-cured flowable composite like PermaFlo Purple works best as a seal, liner, or depth marker under a direct or indirect restoration. Use it after you have prepared and cleaned the site, and after you have placed your adhesive. Its flowable handling lets it adapt to irregular floors and interproximal spaces, which is where a more viscous composite can leave voids.
The trade-off is that flowable composites are not your primary stress-bearing material. If the preparation needs bulk to resist occlusal loading, place a suitable restorative composite over the indicating layer rather than relying on the flowable alone. Also confirm your curing light can reach the depth you are sealing; a purple layer you cannot cure is a liability, not a checkpoint.
Adhesive pairing and surface prep
PermaFlo Purple is designed to be used with an adhesive system, so the adhesive choice is part of the decision, not an afterthought. A universal adhesive such as Peak Universal Bond is a practical default because it is formulated to work with all bonding substrates. If you are bonding to a substrate your current adhesive does not cover, that is a reason to change adhesive, not to skip the bonding step.
Etch, prime, and bond according to the adhesive you choose, then place the indicating composite. Do not let the purple color tempt you into a thicker layer than your curing light can penetrate. If you are unsure about depth, place and cure in increments and check as you go.
How it compares with a standard flowable
A standard light-cured flowable composite is chosen for translucency and color matching. PermaFlo Purple is chosen for identification. That single difference drives the buying decision: if you need to see the seal, the indicating version earns its place; if you need the seal to disappear, a conventional flowable is the better tool.
Cost and inventory also matter. Keeping one indicating composite for checkpoints and one conventional flowable for esthetic layers is usually more practical than trying to make a single material do both jobs. The indicating composite benefits are real, but they are situational.
Decision rules for choosing an indicating composite
- Choose PermaFlo Purple when the seal must be visible: If you need to confirm coverage, depth, or placement of a coronal seal under or around a restoration, the purple indication does the checking for you. Default choice for hidden seals and depth verification.
- Skip it when the layer will be esthetically visible: A purple layer is not a final surface. If the restoration will show, plan a tooth-colored composite over it or choose a conventional flowable instead. Esthetics is the disqualifier, not the material quality.
- Match the adhesive before you match the composite: PermaFlo Purple is used with an adhesive system, so pick an adhesive that covers your substrate. Peak Universal Bond is designed for all bonding substrates. Adhesive coverage decides whether the indicating composite is usable.
- Verify cure depth before you commit: Flowable composite in a deep preparation can exceed your curing light's reach. Place in increments if you are unsure, and do not assume the purple color guarantees a cured layer. An uncured seal is worse than no indicator.
Products that support this workflow
- PermaFlo™ Purple-Light-Cured Anatomical Indicating Composite: PermaFlo Purple coronal seal identifier is used with an adhesive system to create an easily identified coronal seal. This is the core indication: a seal you can see and verify rather than a color-matched layer you have to trust.
- Peak™ Universal Bond-Light-Cured Adhesive with Chlorhexidine (0.2%): Peak Universal Bond light-cured adhesive works with all bonding substrates. A universal adhesive keeps your bonding step consistent across the substrates you encounter, so the indicating composite is not limited by your adhesive.
- Sable™ Seek™-Caries Indicator: Sable Seek caries indicator makes it easy to spot demineralized and carious dentin. If you are already using a caries indicator to check the preparation, an indicating composite extends the same visual-check logic to the seal itself.
Who should buy PermaFlo Purple
Best for
- Clinicians who place coronal seals and want visual confirmation of coverage and depth
- Practices already using a caries indicator such as Sable Seek and want the same visual-check approach at the seal stage
- Restorative cases where the seal sits under a later tooth-colored layer and identification speeds up verification
Not for
- Final esthetic surfaces where a purple layer would be visible
- Bulk occlusal loading where a flowable should not be the primary stress-bearing material
- Clinicians who need one material to serve both as a color-matched flowable and an indicator
