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12 TRENDS & APPLICATIONS Dental Tribune Asia Pacific Edition | 3/2017 2. Luting composites have im- proved: A wide range of modern aes- thetic cements have become availa- ble. They are offered in several de- grees of brightness to match them to the brightness of the natural teeth being restored with a full ve- neer or partial veneer. In addition, these luting composites contain newly developed photoinitiators, which improve their curing capabil- ity and long-term shade stability. The ceramic material selected for a restoration depends on the size of the defect and/or the optical ef- fects and stability that the dentist in- tends to achieve. The layering tech- nique is likely to be the first choice for teeth featuring multiple optical effects. If large partial veneers that do not require special effects, but in- clude the entire incisal edge, are re- quired, a high-strength ceramic such as lithium disilicate is a likely choice. When it comes to selecting a luting material for full veneers and partial restorations, Variolink Veneer (Ivoclar Vivadent) is bound to be the first choice for many den- tists. Not long ago, the successor product, Variolink Esthetic, was launched. This luting material is available in a dual-curing and light-curing version. The Effect shade concept on which the five shades of the product are based enables the dentist to adjust the shade effect of the restoration to make it appear warmer or lighter, as required. In addition, the shade effect can be checked prior to the final cementation with the help of try-in pastes in the corresponding Effect shades. The composite con- tains the newly patented photoini- tiator Ivocerin, which provides the cement with long-term shade sta- bility. In addition, Variolink Es- AD thetic is easy to use owing to its flexible situational consistency and easy clean-up characteristics. The clinical report below de- scribes the placement of two par- tial veneers seated with Variolink Esthetic LC in the shade Warm. Clinical case A 46-year-old male patient vis- ited our practice with the request to have his 20-year-old Mirage partial veneer replaced. He felt that the veneer needed replacing because of the wear of the adja- cent central incisor (Figs. 1 & 2). It was decided to use partial veneers to improve the situation; Figure 3 shows the preparation performed on the teeth. Once we had received the ve- neers (IPS e.max Press HT) from the laboratory, we used the Vario- link Esthetic try-in pastes to deter- mine a matching cement shade for the final cementation. In this specific case, we achieved the best result with the shade Warm (Figs. 4 & 5). Next, the adjacent teeth were covered with PTFE tape and a mylar strip was placed between the teeth (Fig. 6). The enamel was then etched for 20 seconds and the dentine for 10 seconds (Figs. 7 & 8), followed by rinsing with water (Fig. 9). Afterwards, Adhese Universal (Ivoclar Vivadent) was rubbed in and allowed to react for 10 sec- onds (Figs. 10 & 11). Variolink Es- thetic LC Warm was applied to the partial veneers before they were seated (Figs. 12 & 13). Excess ce- ment was carefully removed with a brush before light curing (Fig. 14). The veneers were then illumi- nated simultaneously from both sides for 5 seconds using two Blue- phase Style curing lights (Ivoclar Vivadent; Fig. 15). In order to save time, final cur- ing was also conducted using the two Bluephase Style lights, as each side had to be light-cured for 30 seconds (Fig. 16). Since light curing for this length of time with two curing lights operating at a light intensity of 1,100 mW/cm² may result in considerable heat build-up, there is the potential risk of damage to the pulp. It is therefore prudent to cool the teeth with a water spray, as shown in Figure 16. After light curing, re- maining excess cement was re- moved using a scalpel (blade no. 12; Fig. 17). The final result after four weeks is shown in Figures 18 and 19. Dr Eduardo Mahn Dr Eduardo Mahn is the Director of Clinical Research in the aesthetic dentistry pro- gramme at the Universidad de los Andes in Santiago in Chile. He can be contacted at emahn@ miuandes.cl.