Esthetic crown lengthening

 

 ..the biological and mechanical rationale are the same as functional crown lengthening 

see more details here 

the add up regarding this procedure is the esthetic factor that should be considered 

the main thing about esthetics lies in the term ZEINITH points 

as stated in this informative article 

 

the average location of zenith points is : 

know more about it through this link hu friedy chu's gauge

type I

type II

for more types and cases keep following the blog for next topic ....