DIRECT VENEERS - FROM DESIGN TO IMPLEMENTATION
Figure 14 . The content smile of the patient Figure 15 . Smile of the patient
Figure 16 . Smile of the patient
Many studies prove the usability of direct veneers in the everyday dental practice . Frese et al . 15 conducted a five-year follow-up study on 176 direct veneers . All veneers were made without preparatory works in order to provide color and shape correction at the Conservative Dental Clinic of Heidelberg University , Germany . After the follow-up period , the restorations were grouped into three categories : „ failure “, „ survival “ and „ success “. Damage occurred in 30 cases , but all of them could be repaired , so they belonged to the “ surviving ” group . In the end , no restoration was classified as “ failure ”. This made the five-year survival rate to be 100 % in this group , whose size can be considered as statistically significant . With the faults taken into account , the success rate was 84.6 %. 15 Garcia-Godoy et al . conducted a 6-year follow-up study on in vitro and in vivo restorations . 14 In vitro , they fitted MO restoration to 32 extracted human teeth , then exposed them to various influences for 6 years in a randomized way ( immersion in water , thermo-mechanical load , both ). In the in vivo group , direct restorations were fitted into 68 teeth of 30 individuals in total . After 6 years , the closure at the edges was evaluated . The in vitro experiments showed an 85 to 100-percent success for the enamel , while a 42 to 52-percent one for the dentin . In the in vivo group , the edge closure was intact in 75 to 90 percent for the enamel .
It was shown that there were significant differences between the enamel and the dentin . 16 In a third case , Gresnigt et al . monitored 96 direct veneer restorations for more than 40 months . Survival rate was 87.5 %. 17 The adhesive technique makes it possible to esthetically optimize such teeth which show no decay lesions without doing any damage . This way , we can also satisfy patients who refrain from any more invasive treatment , e . g . crowning . Based on the literature data shown , it can be stated that - with appropriate indications - direct veneer restorations can be equivalent alternatives to conventional “ golden standard ” restorations . As Garcia-Godoy et al . showed , the “ appropriate indications ” are a very important factor , because a sufficient bonding power can only be obtained on the enamel surface , i . e . it is reasonable to consider the indications of direct veneer if a large surface of dentin is exposed . 17 Our experience justifies the facts presented above . In case there is a sufficent amount of enamel surface we can decide on direct veneer restauration after measuring the possibility of preparing , elaborating and polishing the restauration .
4 . Conclusions
To conclude , in the first place we can say that this adhesive technique makes it possible to esthetically optimize such teeth which show no decay lesions without doing any damage . We are also in a position to say that the facts presented in this paper are justified and supported by our experience . Secondly , another conclusion would be that , if there is a sufficent amount of enamel surface , a decision that could be taken would be to resort to direct veneer restauration . This can only be done after measuring the possibility of preparing , elaborating and polishing the restauration .
Acknowledgments
The authors declare no conflict of interest related to this study . There are no conflicts of interest and no financial interests to be disclosed .
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