The 17-year-old actor Gaten Matarazzo aka "Dustin Henderson" in Stranger Things, posted a picture on Instagram, following his fourth surgery - he was born with cleidocranial dysplasia, a rare genetic disorder that affects teeth and bones.

IN CASE YOU MISSED IT: Shakira and J.Lo brought the heat during the Super Bowl halftime show! 

The surgery was a success:

View this post on Instagram

Though my expression in this picture may not show it, the surgery was a complete success . This was such A big one, it may be the last one I need. Hopefully at least. Those who suffer from Cleidocranial Dysplasia usually have Supernumerary teeth, which are extra teeth that grow in the gums. I've had several surgeries to extract these teeth from within my gums and help expose the teeth that should have already grown in considering my age. In this surgery, the team of amazing medical professionals extracted 14 supernumerary teeth and exposed six of my adult teeth. I was under for four hours. My recovery for the past few days has been great and I can't thank the team that did the surgery enough. Thank you all for your kind wishes and prayers. It means a lot. Again, if you'd like to learn more about Cleidocranial Dysplasia, you can go to Thanks again everyone

A post shared by Gaten Matarazzo (@gatenm123) on

Gaten Matarazzo has been spreading awareness about his rare bone condition

The Stranger Things star has also encouraged fans to learn more about his condition and how they can help those with it. He previously revealed that although his case is not severe, it has affected his on-screen abilities: "It’s one of the reasons why I haven’t been getting roles, because of my lisp, and the teeth situation, and my height," he said.

Gaten Matarazzo attends the Premiere of Disney's "Star Wars: The Rise Of Skywalker," Hollywood, California, 2019