Dental Upgrades: Is it Worth it?

Dentists are famous, or rather infamous, for always wanting to "upgrade" your treatment. What are these upgrades? What are their benefits? Is it worth upgrading? Dr. J explains the most common upgrades that you will come across at the dentist:

Introduction
2:52 - Fillings: White vs. Silver
7:42 - Crowns: Zirconia vs. PFM (Porcelain Fused to Metal)
13:09 - Partials: Flexible vs. Metal
17:27 - Extractions: Bone graft vs. No grafting
22:20 - Dental implant upgrades
28:09 - Dr. J's Final Thoughts