Dental Tribune Asia Pacific Edition No. 3, 2018

14 TRENDS & APPLICATIONS Dental Tribune Asia Paciﬁ c Edition | 3/2018 6 7 8 Fig. 6: Master model with heat-resistant stumps and zirconium dioxide framework.—Fig. 7: Natural-looking layering of VITA VM 9 with silicone key.—Fig. 8: The ﬁ nished restorations on the control model. uasil Ultra (Dentsply Sirona). This was used as the basis for creating a master model with heat-resistant stumps at teeth #12 and 22 (Fig. 6). The silicone key based on the wax-up was now used to create a splinted temporary also with Struc- tur 3 directly in the patient’s mouth. The temporary was cemented in the crown area with Temp-Bond (Kerr), and the veneers were tempo- rarily ﬁ xed with spot etching. Natural-looking layering The heat-resistant stumps were fabricated with the metal- free investment material Cosmo- tech VEST (GC). This investment material has a coefﬁ cient of ther- mal expansion (CTE) of 13 for metal–ceramic restorations, which prevents tension and cracks dur- ing the ﬁ ring processes in the fur- nace. The CTE of the stump surface AD was adjusted to a CTE of 9 through a double-connector ﬁ ring with VITA AKZENT Plus GLAZE (VITA Zahnfabrik). This way, a uniform and harmonious layering of the maxillary anterior could be car- ried out with VITA VM 9. A palatal silicone key was used to transfer the morphology of the wax-up to the layering and ensure a posi- tion-stable layering (Fig. 7). In the course of the ﬁ rst and second dentine ﬁ ring, the dentine core was created using a mixture of BASE DENTINE 1M2 and 1M1 and the mamelon structures using strongly ﬂ uorescent and beige MAMELON 1 (MM1). This deter- mined the length of the veneer, and an alternating layering in the incisal area could be carried out on this basis. The edges were created using blue EFFECT ENAMEL 10 (EE10). The remaining vestibular proportion was layered in the incisal edge using a mixture of 9 11 10 12 Figs. 9 & 10: The highly aesthetic and natural smile from the lateral directions.—Figs. 11 & 12: Inserted restorations in colour and in black and white.—Fig. 13: The happy patient with her new smile. (pastel), EE3 (pink-translu- EE2 cent), EE9 (bluish-translucent) and a minimum proportion of EE7 (orange-translucent). After the enamel ﬁ ring, subtractive changes in shape were made with a conical diamond tip. A correction ﬁ ring subsequently allowed additive compensation for morphological and colour ﬂ aws. The surfaces were now able to be ﬁ nished with a ﬁ ne-grain, dia- mond-coated ﬂ ame-shaped bur. The edges were given ﬁ ne details at the same time. The restoration register for FREE – education everywhere – no time away from and anytime the practice – live and interactive – interaction with webinars colleagues and experts – more than 1,000 archived across the globe courses – a focused discussion forum – a growing database (cid:82)(cid:73)(cid:3)(cid:86)(cid:70)(cid:76)(cid:72)(cid:81)(cid:87)(cid:76)(cid:715)(cid:3)(cid:70)(cid:3)(cid:68)(cid:85)(cid:87)(cid:76)(cid:70)(cid:79)(cid:72)(cid:86)(cid:3) and case reports – free membership – ADA CERP-recognized no travel costs credit administration Dental Tribune Study Club Join the largest educational network in dentistry! www.DTStudyClub.com ADA CERP is a service of the American Dental Association to assist dental professionals in identifying quality providers of continuing dental education. ADA CERP does not approve or endorse individual courses or instructors, nor does it imply acceptance of credit hours by boards of dentistry.

Dental Tribune Asia Pacific Edition No. 3, 2018

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