“Er ein bod ni wedi gweld gwelliannau mawr o ran pydredd dannedd ymhlith plant blwyddyn ysgol 1 dros y degawd diwethaf, mae yna botensial i wella ymhellach ar gyfer y traean o blant sy'n dal i brofi pydredd dannedd.
“Although we’ve seen great improvements in tooth decay in school year 1 children over the last decade or so, there is scope for further improvement for the third of children still experiencing tooth decay.