Page 29 - DT Vol 15 No 3

aesthetics I
DENTAL TECHNOLOGY, JULY-SEPTEMBER 2025 29

Fig 23: ArgenZ HT+ Multilayer is used as a zirconium oxide base material for microstratification. It offers a well-researched distribution and a smooth colour gradient
without visible transitions (from cervical to incisal), as well as resistance to uniform bending.

such cases, a sample chromaticity in the bleaching area of the zirconia may ACKNOWLEDGEMENTS
be the best choice, because the effect comes effectively from the depth. But Special thanks go to my colleagues, especially Naomi Sulzmann, and to the
beware: this situation represents a high challenge. dental office YourSmile of Dr. Rafaela Jenatschke in Frankfurt Niederrad.
• Even the colour of the abutment can influence the result. Although a With the right material and attention to the fundamentals, it is possible to
zirconia such as ArgenZ HT+ Multilayer covers many discolourations, it create an excellent base for subsequent finishing (microstratification).
does not cover all of them, and it is necessary to inform the clinician. We
need information about the discoloured abutment (e.g., IPS Natural Die
Material, Ivoclar) to make a proper colour match and select the appropriate
zirconia.
• The zirconia must have uniform processing strategies (e.g., sintering
parameters) and provide reproducible results.

Regardless of the manufacturer, multilayer zirconia is not a plug-and-play
solution; it requires a well-considered dental procedure, where you know
what you are doing so that you do not work “haphazardly.” With the right
material and attention to the fundamentals, one can create an excellent base
for subsequent finishing (microstratification). With this in mind, ArgenZ
HT+ Multilayer is not an alternative for us, but the solution.

Facts and figures
ArgenZ HT+ Multilayer (Figure 23)

• Uniform flexural strength of 1250 MPa
• Seven evenly distributed colour layers with no transition lines
• 25 different colours
• Discs of different heights
• Optimal colour matching
PROFILE – A TRUE HYBRID MATERIAL
A true hybrid material combines all the requirements we have in the dental ABOUT THE AUTHORS
laboratory. For us, the leader in the category among multilayer zirconium
oxides is ArgenZ HT+ Multilayer. This zirconium oxide multilayer, specially
“refined,” shows significant differences compared to many other products. Odt. Master Carsten Fischer has
been practicing as a self-employed
MACHINING dental technician since 1996 in
During milling, stable and consistent results are obtained. It is possible to Frankfurt am Main. Since 1994, he
mill without chipping, even thin cervical closure edges. Sintering is based has been active internationally as a
on process uniformity. With other zirconium oxides, thermal stresses often speaker and supplements this activity
occur, especially with large restorations with high volume (e.g., monolithic with publications in many countries.
Carsten Fischer is a member of
frameworks), which can lead to chipping and fractures. Here, too, ArgenZ several scientific committees and a
HT+ Multilayer delivers. The defined sintering process ensures high long-time consultant to the dental
precision—free of thermal stresses. industry. He is a lecturer at the
Steinbeis University in Berlin, liaison
AESTHETICS (TRANSLUCENCY UP TO 45%) to several organizations (DGI), vice
ArgenZ HT+ Multilayer combines seven layers with a colour gradient that is president of EADT, and active member
smooth and without transitions from the cervical to the incisal area. Unlike of FZT e.V. (Association of Dental
other multilayer materials, no transition lines are visible between the layers. Technology).
The opacity is sufficient to hide dark underlying structures. n