Gaten Matarazzo shared a post-op photo from his fourth Cleidocranial Dysplasia–related surgery on Friday.
The 17-year-old Stranger Things actor called the procedure, which address his impacted teeth, a 'complete success.'
'Though my expression in this picture may not show it, the surgery was a complete success,' he wrote.
Winning: Gaten Matarazzo, 17, emerged triumphant when he shared a post-op photo from his fourth Cleidocranial Dysplasia–related surgery on Friday
The photo showed him with an ice pack wrapped around his head while giving a thumbs up.
'This was such A big one, it may be the last one I need. Hopefully at least,' he added.
The stage and screen actor went on to explain that he suffers from a rare genetic disorder called Cleidocranial Dysplasia, a condition that causes extra teeth (known as supernumerary teeth) to grow in his gums.
Individuals with the condition can also have deformed or underdeveloped bones.
Stranger Things: The stage and screen actor explained that he suffers from a rare genetic disorder called Cleidocranial Dysplasia, a condition that causes extra teeth to grow in his gums; pictured January 19
'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,' he continued.
'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.'
Gaten went on to thank the team of professionals who helped clear up his smile.
The big one: Gaten Matarazzo posted to Instagram Wednesday morning before undergoing the surgery, which would remove the extra teeth to allow his intended teeth to grow
The Stranger Things star previously shared a picture of himself in a hospital bed flashing a reluctant thumbs up just before the procedure.
The star is one of the many Cleidocranial Dysplasia sufferers who was born without collarbones and without teeth, forcing him to wear a dental appliance.
Before heading into surgery, Matarazzo urged his 13million Instagram followers to 'learn more about Cleidocranial Dysplasia' by visiting ccdsmiles.org.
Surgery number three: Matarazzo shared this selfie before his third surgery back in March of 2019
From there fans would find the tools necessary to 'help others suffering from the same condition' as Matarazzo.
His ultra famous co-star, Millie Bobby Brown, was one of the first to send well wishes.
'Good luck love!!! sending my love gate,' she wrote in the post's comment section.
Gaten has been extremely open on Instagram — and in the media — about his ongoing battle with the disorder.
Second surgery: In 2017, the Stranger Things actor underwent oral surgery that he toted would get him 'one step closer to having [his] own real teeth'sonos sonos