Did Richard III pray to Saint Apollonia for relief from toothache?

Richard III is known to have had a particular devotion to St Apollonia who is the Patron Saint of sufferers from toothache. The dentition in his skeleton exhumed from a car park in Leicester shows missing teeth which are thought to have been extracted due to caries. It is suggested that Richard, when he was Duke of Gloucester, had prayed to St Apollonia for the relief of toothache before submitting to undergo dental extractions.