Long-term survival of porcelain laminate veneers using two preparation designs: a retrospective study.
OBJECTIVE
This study evaluated the long-term survival of anterior porcelain laminate veneers placed with and without incisal porcelain coverage.


METHODS
Two prosthodontists in a private dental practice placed 110 labial feldspathic porcelain veneers in 50 patients; 46 veneers were provided with incisal porcelain coverage, and 64 were not. The veneers were evaluated retrospectively from case records for up to 7 years (mean 4 years).


RESULTS
At 5, 6, and 7 years, the cumulative survival estimates were 95.8% for veneers with incisal porcelain coverage and 85.5% for those without incisal coverage. The difference was not statistically significant. Six of the nine failures occurred from porcelain fracture in the veneers without incisal coverage.


CONCLUSIONS
Although there was a trend for better long-term survival of the veneers with incisal porcelain coverage, this finding was not statistically significant.
Smales
Roger J
RJ
Dental School, The University of Adelaide, South Australia. roger.smales@adelaide.edu.au
Etemadi
Soheila
S
D000293:Adolescent; D000328:Adult; D016009:Chi-Square Distribution; D003776:Dental Porcelain; D017267:Dental Prosthesis Design; D019232:Dental Restoration Failure; D003801:Dental Veneers; D005260:Female; D006801:Humans; D015993:Life Tables; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D012189:Retrospective Studies
D003776:Dental Porcelain