In 2015-2016, there were 187 hospital dental extractions in Hull – and 169 in the East Riding. The righthand table here shows the % of the age population that have hospital extractions. Here you can see Hull is the lowest in the region.
If we focus on extractions primarily for caries (bad teeth), we get lower figures. You can see again that Hull scores well in the region. (The * means 6 or less extractions).
If we look at older figures, we can see, there were 220 extractions (for caries??) 3 years ago. If we use this figure, by 2016 there are 15% fewer extractions, a regular 5% a year improvement (without any fluoridation, of course).