Polly lost her teeth (no idea why) and can eat munchies, but I only allow about half a dozen on top of wet food, to avoid kidney probs.
I'd recommend that you keep your cat on wet food for a few months, to allow the gums and underlying tissue time to fully heal. It takes more than a fortnight. Although the top layers of gum tissue will have rejoined, there will still be unhealed deeper tissue, and dry food would be like biting a bullet - Ouch!
There's no real reason why cats should eat dry food at all. Wet is better because of the liquid content, and cats rarely drink. Personally, I'd keep your cat on good quality dry food. If Clapton already has a renal issue, get some wet food designed for this.
If you really want to give dry food, Mark, wait for a few months first, otherwise you could disrupt the healing process.