Yes, there are. Some anime - inspired fanfics about dentists might explore unique storylines. For example, a dentist in an anime - like world who has special powers to heal not just teeth but also emotional wounds of patients. They could use magical dental tools or have extraordinary knowledge of dentistry that is combined with anime - style adventures.
You can try some popular fanfic websites such as Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, including those related to anime and dentists. Just use the search function and type in relevant keywords like 'anime dentist' to find the stories you're interested in.
One common theme is the relationship between the dentist and the patient. It could be a budding romance or a friendship. Another theme is the dentist's personal life and how it affects their work. For example, a dentist dealing with a family issue while at work.
I'm not sure if there is a specific fanfic named 'Cobra the Dentist' in the Fairy Tail fandom. There are a vast number of fanfics out there, and it could be a very niche or newly created one. You might want to check popular fanfic websites like Fanfiction.net or Archive of Our Own and search for it specifically.
A possible theme is also self - discovery. Through his experiences at the dentist, Blaine could learn something about himself. Like he realizes he has more strength or courage than he thought. Or perhaps he discovers a new aspect of his personality while interacting with the dentist and the dental office environment.
One possible plot could be that a pony has a really bad toothache and has to visit the dentist pony in Ponyville. The dentist pony discovers that there's a magical element causing the toothache and has to find a way to fix it without harming the patient. It could involve a journey to find a special herb or spell.
One possible plotline could be that the dentist has a secret addiction to causing pain rather than relieving it. Maybe they use their position to experiment on patients in unethical ways.
I'm not sure of a specific MLP dentist fanfic off the top of my head. But you could try searching on fanfic websites like Fimfiction. They have a large collection of My Little Pony related fanfictions, and you might be able to find some that involve dentists in there.
One popular dentist fanfic could be 'The Dentist's Secret Patient'. It's about a young patient who discovers a hidden side of their dentist. Another is 'Dentist by Day, Hero by Night' which gives a unique take on a dentist having a double life. And 'A Dentist's Love Affair' that focuses on the romantic side of a dentist's life.
Well, you can try searching on popular fanfic platforms like Archive of Our Own. There might be some great Blaine - related dentist fanfics there. Just use the search function and type in 'Blaine dentist' to find relevant stories.