I wouldn't worry unless you were intending to show your pup. Bella has a wonky jaw, she's slightly overshot but the main thing is her bottom lefthand jaw rolls inwards, which meant her lower left canine was growing into the roof of her mouth. She had various "procedures" to correct it including:
- removing the baby canine to see if the new one grew correctly
- us making her hold a rubber ball in her mouth several times a day for two weeks when the new tooth was growing to try and push it outwards
- a doggie brace (called a bite plane) which didn't work as she kept hooking her jaw around the wrong side of it
- a second doggie brace which still didn't work
- they then wanted to try another method which would involve her being muzzled for a few weeks with a brace where you had to turn screws on it. We refused this and asked them to just take the tooth out as Bella had been through enough - 4 general anaesthetics before she was even 6 months, poor baby.
She's absolutely fine without her 4th canine and it doesn't seem to have weakened her jaw at all. She has a lovely wonky little grin and it hasn't impeded her bone-gnawing, kissing, or carrying-fluffy-toys abilities whatsoever.