Im using those one piece metal wire behind teeth retainer. Dont know what is it called.
Im lazy to put it on every night if its removable.
Hence this "permanent" one is more suitable for a lazy me.
Starting it was very easy for the glue to break off. Probably the orthodontist try to potong me. Rm50 or so putting back the glue again like every single week.
Then i fed up. Went to other clinic put on glue on the retainer. Then it never came off no matter what i ate. Even crab n nuts.
Only had one maintenance to one of the end due to glue wearing off after many many years