Hi.. Thanks for the query.. Yes, it can be probably due to erupting permanent teeth as itching and soreness of gums is commonly been when the teeth are about to tear from the gums to erupt.. When the erupting teeth are about to break from the gums the gums become inflamed and itchy and creates a deep urge to itch over the area.. If the itching is so annoying you can do cool compresses over the itchy gums and can also apply Lidocaine gel for relief.. Anti inflammatory painkillers like Ibuprofen can be advised by a Dentist.. Also doing warm saline gargles can relieve.. In case if there is still no improvement then you can consult a Paediatric dentist and get evaluated.. Hope this helps.. Regards..