From Micerium® (Italy)

ENA HRi® offers unparalleled esthetics for anterior composite restorations. It features materials that have been designed specifically for the Vanini Stratification technique. Dr. Vanini is a leader and innovator in dental esthetics, and continues to teach his technique, along with many of his colleagues, all around the globe.

With ENA HRi®, you can obtain predictable, highly esthetic composite restorations with invisible margins, while providing patients with years of functional smiles.

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Like NATURE does it!

ENA HRi® nano-hybrid composite produces incredibly natural looking composite restorations. ENA HRi® enamel and dentine shades feature a list of unique properties that allow clinicians to match a natural tooth's optical properties to produce incredibly life-like restorations with invisible margins.
dr lorenzo vanini

ENA HRi® was developed in Italy by Micerium S.p.A. based on the ideas, research and principles of Dr. Lorenzo Vanini.
Just like NATURE... HRi enamel shades act like human enamel
The HRi system contains only 3 achromatic enamel shades, and these are related to the patient's age group. Young enamel is very bright [high value = UE3]. As patients approach middle age, this value decreases [medium value = UE2]. The process continues as patients reach their senior years [low value = UE1].

Low value enamel Medium value enamel High value enamel
Older patients Middle aged patients Younger patients

A thicker HRi enamel increases the opalescent effect

HRi enamel shades allow clinicians to obtain invisible margins, without compensatios (increasing bevels and increasing the thickness of dentin composite). This is obtained through the exclusive patented refraction index of HRi enamel shades, with is identical to human enamel:

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The ENA HRi difference!

The key to ENA HRi esthetics is an exclusive patented enamel composite material. ENA HRi enamel composite refracts light like human enamel. This development creates invisible margins without the need to compensate by increasing bevels and increasing the thickness of dentin composite.

ENA HRi is the only composite material that has the same refractive index as natural enamel.

Composite Refractive Index
ENA HRi (Micerium) 1.6200
Clearfill Majesty (Kuraray) 1.5320
Filtek Supreme (3M) 1.5270
Point 4 (Kerr) 1.5230
Esthet-X (Dentsply) 1.5210
Venus (Kulzer) 1.5210
Tetric Ceram (Ivoclar) 1.5195
Kalore (GC) 1.5132
Gradia Direct (GC) 1.4910
Herculite XRV (Kerr) 1.4830
Renamel Nano (Cosmedent) 1.4745

Just like NATURE... HRi dentin shades act like human dentin
The HRi system dentin shades make up the dentin mass that transmit their hue and chroma through the enamel mass. The shades are highly fluorescent and are designed to work with the HRi enamel shades for optimal results.

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HRi has a fluorescent dentin

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Just like NATURE... HRi additional shades complete the characterization
HRi offers additional shades to reproduce the characterization of an individual’s nature dentition.

These shades include:


Intensive Milky, Intensive White Spot


Opalescent Amber, Opalescent Blue


White, Blue, Brown, Brown2 Dark, Orange, Yellow

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Patented by Dr. Lorenzo Vanini

Why traditional techniques don't work
If you are frustrated with spending precious time to produce a high level esthetic composite restoration, only to be disappointed in the result, it's not your fault. With traditional layering techniques, it's a hit-or-miss process.

Popular enamel composites produce a graying effect as they are applied in thicker layers, because their refraction index is not tuned to human enamel. The only way they achieve results is through a complicated and unpredictable layering technique. Even if successful under certain lighting conditions, these restorations are subject to metameric failure.

Traditional restorations leave visible margins

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HRi Technique - Invisible margins

Invisible margins, reproducing with HRi the same thickness of the natural enamel. *Measurements refractive indices from the University of Fraunhofer Institute Dresden, on enamel shells natural and universal enamel HRi.

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Physical properties
ENA HRi® is truly a universal nano-hybrid composite offering not only great esthetics but exhibits superior physical properties in 3 out of 5 important categories.
Product name Vickers
ENA HRi (Micerium) >700 170 14500 450 45
Premise (Kerr) 520 117 8824 405 40
Herculite (Kerr) 600 144 8450 368 45
Simile (Pentron) 660 150 13770 423 41
Cerem X (Dentsply) 536 121 10556 347 32
Filtek Supreme (3M) 823 160 13300 407 51
Evo Ceram (Vivadent) 515 120 8720 385 n/a

Abrasion resistance

Rel. wear factor [ 200 000 cycles ]

HRi shows superior resistance to wear – it is designed for both simple and complex direct and indirect restorations.
ena hri abrasion

Step by Step Videos

Direct restoration on vital incisor video (6:29 min.)

The benefits of using HRi composite video (6:55 min.)
ena hri bio function BPA-FREE composite
ena hri Vanini Stratification Technique
ena hri flow “No Bubbles” Formulation
ena matrix Anatomical Sectional Matrices & Wedge System