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Dental TribuneAsia Pacific Edition | 12/201516 TRENDS&APPLICATIONS crowns. As this luting system is a full adhesive, sufficient moisture control must be ensured. Owing to the equi- gingival preparation margin, the healthy condition of the gingiva and the excellent cooperation of the patient, the placement of a rubber dam was not essential. Therefore, cotton roll isolation was used to seat the crowns. Two retraction cords (Ultradent Products) were placed to prevent any contamination with sulcularfluids(Figs.7&8). The bonding surfaces were cleaned with a fluoride-free prophy paste. Next, Adhese Universal adhesive (Ivoclar Vivadent) was applied from the pen applicator (Fig. 9). The re- maining thin enamel margin was not etched, in order to prevent any gingival bleeding. Adhese Universal was scrubbed into the conditioned tooth surface for >20 seconds as stated in the directions for use. Ac- cording to the manufacturer, this time should not be reduced, as it is notsufficienttosimplypaintthead- hesive on to the tooth surface. Next, theadhesivewasdriedwithblownair until an immobile, glossy film was left. The adhesive was then light curedfor10seconds(Fig.10). Since the universally compatible adhesive forms a considerably thin- nerfilmthandoesHeliobond(Ivoclar Vivadent),forexample,itcanbelight cured without encountering any subsequent problems of fit or bite elevation. The polymerised adhesive layer on teeth #11 and 21 is visible in Figure 11. Figures 12 and 13 show the ad- hesively cemented IPS e.max lithium disilicatecrownsatthefinalfollow-up appointment, four weeks after the treatment. The gingiva was free from anyirritationandthecrownsblended in smoothly with the surrounding teeth.Thetremendousimprovement intheappearanceoftheanteriorteeth achieved with the all-ceramic restora- tions on teeth #11 and 21 is visible in the close-up photograph shown in Figure 14. For the first time in many years,thepatientdaredtosmileagain (Fig.15). Conclusion Ittakesquiteabitofcouragetouse innovative products and procedures, suchasthosedescribedinthisarticle. Adequateclinicaldataisnotyetavail- able,letalonethemuch-neededlong- term studies. Nonetheless, a start must be made somewhere. For those dentalpractitionerswhowouldliketo be rid of hydrofluoric acid sooner rather than later, the described self- conditioning glass-ceramic primer mayofferaviableoption. Sincetheetchingtimehasasignifi- cant influence on the strength of the ceramic when hydrofluoric acid is used to condition ceramic restora- tions, the specifications of the man- ufacturer must be strictly observed. IPS e.max Press lithium disilicate should be etched for 20 seconds if 5 % hydrofluoric acid is used. Other conventional glass-ceramics require 60 seconds of etching. DeguDent (DENTSPLY) recommends that its materialCELTRAbeetchedfor30sec- onds.ThereactiontimeofMonobond Etch&Primeis60secondsonalltypes of ceramics. Thus, it offers a first step inthedirectionoferrorprevention.It remains to be seen whether external studiescanconfirmtheeffectiveness of the product in establishing an ad- hesive bond on ceramics other than thosefromIvoclarVivadent. Whiter. Brighter. You. Your Smile.Our Vision. www.sdi.com.au www.polawhite.com.au SDI Limited Telephone +61 3 8727 7111 Info@sdi.com.au Fax +61 3 8727 7222 PNG - Meddent - Tel: + 675 320 3718 Cambodia - Pro Dent Trading Co., Ltd. - Tel: +855 23 883 179 Singapore - Eastland Dental - Tel: 6296 5660 Philippines - GDS Dental Supply - Tel: +632 631 3316 Myanmar - Silver Lotus - Tel: + 95 1 290 847 New Caledonia - EURL IDEM - Tel: + 687 286511 Hong Kong - Horseley - Tel: 2889 1218 Sri Lanka - Yu & Co - Tel: + 94 11 269 1740 India - Dental Avenue - Tel: + 91 22 6699 7599 Pakistan - Al Qiam Traders - Tel: + 92 423 732 3049 Vietnam - Vietdan - Mobile Tel: + 84 9095 04034 Malaysia - Indra Sari Trading - Tel: + 603 5121 7193 Thailand - Shanghai Dental - Tel: + 66 2 866 3477 Pola Office+: The world’s fastest bleach: Based on the total treatment time compared to that of all other competitor’s printed literature. THE DENTAL ADVISOR, Vol. 25, No. 9, November 2008. poladay&night advanced tray tooth whitening systems Pola Day: Available in 7.5% and 9.5% hydrogen peroxide Pola Night: 16% and 22% carbamide peroxide Pola Day CP: Available in pola office+ the world’s fastest bleach apply directly to the tooth to inhibit sensitivity HIGH WATER 1 14 15 Prof.Claus-Peter Ernst works at the Johannes Gutenberg Uni- versity of Mainz Medical Center’s policlinic for re- storative dentis- try in Mainz in Germany.Hecan becontactedat ernst@uni-mainz.de. Fig.14:Frontalviewoftheanteriorteeth. A significant aesthetic improvement overtheinitialsituationwasachieved. Fig.15:Photographofthesatisfiedpatient. AD Telephone +61387277111 Fax +61387277222 PNG - Meddent - Tel: + 6753203718 - Tel: +85523883179 Singapore - Eastland Dental - Tel: 62965660 Philippines - GDS Dental Supply - Tel: +6326313316 Myanmar - Silver Lotus - Tel: + 951290847 New Caledonia - EURL IDEM - Tel: + 687286511 Hong Kong - Horseley - Tel: 28891218 Sri Lanka - Yu & Co - Tel: + 94112691740 India - Dental Avenue - Tel: + 912266997599 Pakistan - Al Qiam Traders - Tel: + 924237323049 Vietnam - Vietdan - Mobile Tel: + 84909504034 Malaysia - Indra Sari Trading - Tel: + 60351217193 Thailand - Shanghai Dental - Tel: + 6628663477