Mae'r Ysgrifennydd Iechyd, Vaughan Gething, wedi croesawu adroddiad newydd sy'n dangos gostyngiad sylweddol yn nifer yr achosion o bydredd dannedd ymysg plant 11 a 12 oed yng Nghymru.
Health Secretary, Vaughan Gething, has welcomed a new report which shows a significant decline in tooth decay amongst 11 to 12-year-olds in Wales.