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Dental Tribune Middle East & Africa Edition | 1/2017 28 RESTORATIVE Adhesive cementation of partial veneers ByDrEduardoMahn,Chile The desire for esthetically pleasing, minimally invasive and perfectly matching anterior restorations has existed since the beginning of den- tistry. Only recently, however, has it become possible to translate this de- sireintoreality.Formanyyears,den- tists were struggling with the opac- ity of PFM crowns before all-ceramic crowns became available. However, these ceramic materials were not re- sistant enough to be suitable for less invasive indications. Finally, ceramic veneerswerelaunched.Veneerprep- arations are far less invasive than crown preparations - some prepara- tion was nonetheless still needed. In addition, the veneers had to be designed in such a way that they covered the entire buccal surface. However, given the advancements inceramictechnologyandtheluting composites available today, it is now possibletousepartialveneersandto insertthemwithoutanydifficulty. Partial veneers are ceramic veneers that only cover that part of the tooth that is missing, broken off or abrad- ed. As a result, the tooth warrants only partial preparation or none at all. This approach has become feasible fortworeasons: 1. New ceramic materials are avail- able. Dental technicians have now the option of layering any ceramic restoration. They can choose to use a fluorapatite ceramic material such as IPS e.max Ceram or to press the restoration from a highly translu- cent ingot such as the Opal or HT ingotsoftheIPSe.maxPressrange. 2.Lutingcompositeshaveimproved. A wide range of modern esthetic cements have become available. They are offered in several degrees of brightness to match them to the brightness of the natural teeth being restored with a veneer or partial ve- neer. In addition, these luting com- posites contain newly developed photoinitiators which improve their curing capabilities and long-term Fig.1:Preoperativesituation Fig. 6: Before seating the veneers: adja- cent teeth covered with Teflon tape and separationwithaMylarstrip Fig.3:Prepared teeth Fig. 8: Followed by dentin etching for 10 seconds. Fig. 2: Close-up of the preoperative situa- tion Fig.7:Enameletchingfor20seconds Fig. 4: Selecting the shade of the luting composite: Variolink Esthetic LC in shade “Warm“ Fig.9:Risingwithwaterspray Fig.5:Try-inofbothpartialveneers Fig. 10: Applying Adhese Universal bond- ingagent shadestability. The ceramic material selected for a restoration depends on the size of the defect and/or the optical effects and stability that the dentist intends to achieve. The layering technique is likely to be the first choice for teeth featuring multiple optical effects. If large partial veneers that do not warrant special effects but include the entire incisal edge are required, ahigh-strengthceramicsuchaslithi- umdisilicateisalikelychoice. When it comes to selecting a lut- ing material for veneers and partial restorations, Variolink Veneer from Ivoclar Vivadent is bound to be the first choice for many dentists. Not longago,thesuccessorproduct,Vari- olink Esthetic, has been launched. This luting material is available in ÿPage 29 For more information about the association and its members please visit the ASDI welcome desk on Booth 8E18 www.swissdentalindustry.ch The Swiss Pavilion is organized by the Swiss Dental Industry Association (ASDI) with the support of Switzerland Global Enterprise (S-GE). Welcome to the Swiss Pavilion AEEDC 2017 Dubai 7-9 February Dubai International Convention & Exhibition Center Booth N° 8E13 www.intensiv.ch Booth N° 8E17+8F10 www.fkg.ch Booth N° 8E10 www.pdsa.ch Booth N° 8F14 www.saremco.ch Booth N° 8E14 www.esro.ch Booth N° 8F17 www.wild-pharma.com Booth N° 8F15 www.ibi-sa.com Booth N° 8F12 www.smileline.ch Booth N° 8E09 www.bienair.com Booth N° 8F09 www.bpr-swiss.com Booth N° 8F13 www.jota.ch Produits Dentaires Swiss quality dental products