I went to my dentist last month and had this issue looked at. A wisdom tooth had pushed in and pushed my already close knit teeth together. The issue being my canine was already at an odd angle and when forced further together chipped both the canine and the incisor in front of it. The exposure alone is uncomfortable not to mention the "hole" is widening.
The dentist said due to the canine being hooked he feared pulling it and breaking it so he wanted me to see a dental surgeon who informed me the procedure would cost 600, which is like a half a months salary and I don't have insurance. He offered to cap the gap for 4,000 which is outrageous as well in my opinion.
Anyway I was considering using Epoxy, over the counter stuff, since dentists use crystal glaze epoxy so would the general store stuff be terribly bad to use? I seriously don't have any money or resources at the moment to fix this issue otherwise.