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12 prosthetic section DENTAL TECHNOLOGY, JULY-SEPTEMBER 2022
transitional design (Figure 25). available space for layering is checked to create high aesthetics and durable pros-
This is then followed by the milling of a (Figure 35). The layering of ceramic pow- theses at the same time, lead the laborato-
zirconia disk (Noritake Katana consump- ders is done with dentine, transparent, ry to use specialized techniques to process
tion HT 26mm 1200MP). The outer surface translucent and color modifiers, until the aesthetic materials such as zirconia and to
is microprocessed with morphological and completion of the work and final firing. ensure fracture resistance such as that of
micro-morphological characteristics, as In Figures 39-44 is the completed metal-ceramic.
well as individualized stains for mamelons, work, the aesthetics and morphology of In this article we can see the implemen-
cervical areas, light-absorbing areas, teeth and soft tissue, as well as the bar tation of a personalized digital design of a
opalescent areas, occlusal and palatal sur- cemented in its final position with dual zirconia full arch over structure on implants
faces (Figures 26 & 27). On the inner polymerization cement. with the support and reinforcement of a
surface, the area where the bar will be titanium bar inside the zirconia in order to
cemented is painted with a special liquid. Clinical case of: Dr. Kunal Lal, DDS, MS, avoid the possible issues that can occur to
The result will be an opaque white surface FACP such excessively large zirconia restorations.
that is intended to completely cover the The knowledge of the techniques and
gray color of titanium bar (Figure 28). CONCLUSION materials is always prerequisite for a pre-
After the sintering firing (Figures 29 to Aesthetic restorations generate a great dictable and reliable result.
34) and the application of the bar, the demand in restorative dentistry. The need
FIG 37 FIG 38 FIG 39
FIG 40 FIG 41 FIG 42
About the author
Nondas Vlachopoulos BSc
Established "Aesthetic Lab" in
Athens and collaborates with
the Department of
Prosthodontics of the Eastman
Institute of Oral Health of the
University of Rochester, USA.
He is an editorial reviewer at
the American Academy of
Cosmetic Dentistry’s Journal of
Cosmetic Dentistry (JCD) and international member of
European Academy of Digital Dentistry (EADD).
FIG 43
His laboratory is part of the Postgraduate program leading
to a Master of Science Degree in dental
Biomaterials/Materials of Dental Technology. The program
is operated by The Department of Dental Technology of
the Technological Institution of Athens in conjunction with
the Dental School of the National and Kapodistrian
University of Athens.
Nondas Vlachopoulos leads many educational hands-on
courses in Greece and worldwide (USA, South America,
Europe, Asia and Middle East). He is an invited lecturer on
dental aesthetics at international meetings and congress-
es and is a KOL for Noritake Dental, Ivoclar Vivadent and
MPF Brush Co. in Greece.
FIG 44