"Cervical Enamel Extension" looks like a tie?!

Question: "Cervical Enamel Extension" is most common in which sites?
 
Here's a VIDEO mnemonic to never forget it! *SOUND ON*

*From my "Oral Pathology Mnemonics Online Course"
 
For more: https://rememberology.wixsite.com/oral-patho-mnemonics