A 29-year-old woman who battled drug addiction after her brother’s death is unrecognisable after she was given a dental transformation.

A former drug addict has undergone a drastic makeover after being given a new set a teeth.

Brittany Negler, of Philadelphia, in the US, went down a “dark path” after the death of her 18-year-old brother – turning to drugs to help numb the pain.

As a result of her addiction, the 29-year-old suffered damage to her teeth, including losing a few gnashers and sustaining rotting in others.

She went to see a dentist for help, but claims she was told her they were “unfixable”, and instead removed them all.

As a result, she was unable to eat and lost a considerable amount of weight.

Brittany Negler, 29, of the US, turned to drug’s following her brother’s death when she was a teenager. Picture: TikTok/brittanynegler

She revealed how her new smile has given her a new lease on life. Picture: TikTok/brittanynegler

At just 35kg, Ms Negler was about to get a feeding tube when she reached out to cosmetic dentist and “tooth fairy” Dr Kenny Wilstead who gave her a $38,000 dental transformation.

She shared her transformation on TikTok with the clip attracting more than 31.6 million views.

“They literally pulled all your teeth and did dentures because of some minor (issues),” a shocked Dr Wilstead could be heard saying in the clip.

She also believes the practise “made up her records” before picking them up to take to Dr Wilstead.

Unable to eat much, she dropped down to just 35kg after a dentist pulled her missing and rotten teeth out saying they were ‘unfixable’. Picture: TikTok/brittanynegler

“On there [her dental records] it says fixable by a root canal, but they never said anything about a root canal. They said my teeth weren’t fixable that they had to be pulled,” she said.

Ms Negler was given dentures, but they were so big she could not eat or close her mouth.

“When I chew, there is so much pain up here,” she said, adding that sores “keep randomly popping up” on her gums.

She then broke down in tears as she explained to the dentist how people would troll her online, mocking her appearance.