Please make sure that you monitor his weight daily and feed him with recovery formula and/or mushed up pellets and grated veg if he can still chew and his overgrown premolars have not trapped the tongue yet. Keeping him fed and minimising potential complications from long term overgrown teeth as much as possible is important.
Please be aware that unless you find a specialist for guinea pig dentals (sadly not likely), your boy is not likely to be able to eat straight away after dental treatment and may need ongoing dental care depending on the severity and cause of his problems, so you have to be prepared to continue with syringe feeding/grated veg, painkillers and gut stimulants after treatment.
You can find our emergency and bridging care advice via this link here:
Emergency, Crisis and Bridging Care until a Vet Appointment
The lady who runs The Excellent Adventure Sanctuary for guinea pigs with special needs (TEAS) is currently too busy to come on here but has allowed us to refer any members with dental issues to contact her via her sanctuary during normal daytime hours.
The Excellent Adventure Sanctuary – Providing life-enhancing care for Guinea Pigs with extra needs
Keep your boys next to each other with interaction through the bars so they have company and stimulation but cannot fight. The screaming and bar biting should calm down within a few days, but the boys should be able to still see see (body language), smell (pheromones) and talk with each other for full communication in the longer term.
Detailed advice and information via the two links below.
Please accept that it has taken me days to write the guides and that I cannot get all the relevant tips into every post each time. I am moderating for free in my free time.
Both guides deal with the 'what next' after a major fight and a permanent separation by going through all your possible options with their various pros and cons. As each situation is unique and access to good rescues and piggy savvy vets varies massively from country to country (or even between areas in one coutry) there is no one solution that fits every case. It is a process of working out which options are valid for you and which you find the best and easiest to implement and to live with in the longer term.
If you are near Gothenburg, then Eragons Marsvins guinea pig rescue would be the best place to contact; especially for country specific information and support.
A Comprehensive Guide to Guinea Pig Boars
Boars: Teenage, Bullying, Fighting, Fall-outs And What Next?
Eragons Marsvin