cosmetic dentistry - beauty & science

12 I I special topic _ porcelain laminate veneers request feedback from the patient to have him or her approve the veneers. Third,afterobtainingthepatient’sapproval,etch the inner surfaces of the veneers with 37 % phos- phoric acid for 15 seconds. Cleanse the acid from the veneers in an ultrasonic cleaner with a 95 % alcohol solution for four minutes. Apply silane two or three times, followed by a heat treatment carried out with a hair dryer.4 Fourth, apply and rinse etchant. Then apply bonding agents to the teeth surfaces. Fifth, place veneers with resin cements on the teeth, and make sure that the cementation steps are done individually in the following order: cen- tral incisor, lateral incisor and canine (Figs. 37a–c). After the initial light curing (two seconds), remove the excess cement, then finalise the light curing withanoxygenblocker(OxyguardII,Kuraray)onthe marginal area to achieve complete polymerisation (Fig. 38). Sixth, after cleaning, adjust occlusal contacts with a diamond bur and ceramic polishing burs (Figs. 39a–c). The final PLVs produce a natural smile with an enhanced aesthetic contour and texture (Figs. 40a–c). Make an alginate impression to fabri- cate a night guard for the veneers. On the follow-up appointment, deliver the night guardtoprotectthenewlyplacedveneers(Figs.41a & b). _Conclusion With this easy-to-use, step-by-step guide, you can create predictably aesthetic and reliable ce- ramic veneer restorations, but this requires a firm understanding of all five phases: diagnosis, prepa- ration design, provisionalisation, material selection and cementation. _Acknowledgement Special thanks to Dr. Young S. Kang for the edit- ing of the manuscript._ Editorial note: A complete list of references is available fromthepublisher. cosmeticdentistry 2_2012 Dr Seok-Hwan Cho Assistant Professor and Prosthodontist, Department of General Dental Sciences School of Dentistry Marquette University Room 004 1801WWisconsinAve Milwaukee,WI 53233 USA _contact cosmeticdentistry Fig. 41b Fig. 40a Fig. 40cFig. 40b Fig. 41a