Advice electric toothbrush

[PattyLDN]

Dear Repair Café,

Hope you are all safe and well. Since 2013, I have an electric toothbrush which works perfectly fine and I hope it will still serve me for many more years to come. The issue I have is with the handle which has gone sticky, has ripped on one side and it's coming off a little.

Is there a way to repair this damage and if not, is there a way to replace this part of the handle which gives the toothbrush grip?

I am including pics of the front and back of the toothbrush so you can see what I mean. The front looks as good as new the back not so.

Many thanks for the advice.

Regards,
Patty