Hello & welcome,
If there is a gap behind canine tooth
as it moved forward in the place of lateral incisor, then canine can be aligned back to its normal position.
This can be done in the natural way but you will again have to put either braces or removable orthodontic plate or appliance for a period of approximately 5 - 6 months.
Once canine is pushed back to its normal position, then you can go for Cantilever Bridge either on your Central incisor or on canine. This bridge is to be made with ceramic to give it a natural look.
Even the best treatment here is, to place an implant followed by placing a ceramic crown on it. This is best but most costly treatment if you can afford it.
Or canine can be given shape like lateral incisor by grinding or crown preparation & veneers or laminates. But frankly speaking, it should be avoided. Even if it will be less time consuming method, but not the best as sensitivity can be developed following the same.
Best is to visit orthodontist or a prosthodontist to evaluate the condition clinically & to decide the appropriate treatment.