gostyngiad yng nghyfran y plant â phydredd dannedd rhwng 2007-08 (47.6%) a 2015-16 (34.2%). Mae hyn yn dangos bod y gyfran o blant nad oes ganddynt bydredd dannedd amlwg erbyn eu bod yn 5 mlwydd oed yn parhau i wella. Yn 2015-16 bydd 20 o blant mewn dosbarth o 30 heb gael unrhyw brofiad o bydredd dannedd. Mae hyn yn cymharu ag 16 o blant mewn dosbarth o 30 heb unrhyw bydredd dannedd yn 2007-08;mae profiad o bydredd dannedd cymedrig Cymru gyfan (dannedd wedi pydru a gollwyd ac a lenwyd - (dmft)) hefyd wedi parhau i syrthio o 1.98 yn 2007-08 i 1.22 yn 2015-16. Mae hyn yn ostyngiad o 38% yn y sgorau dmft cymedrig dros 9 mlynedd;yn 2007-08, byddai 14 o blant mewn dosbarth o 30 wedi cael profiad o bydredd, a byddai 4.2 dant wedi cael ei effeithio ar gyfartaledd. Erbyn 2015-16 roedd hwn wedi syrthio i 10 o blant mewn dosbarth o 30, sef cyfartaledd o 3.6 dant wedi pydru;mae lefelau clefydau deintyddol ymhlith plant yng Nghymru yn dal i wella ar draws bob grŵp cymdeithasol. Mewn termau absoliwt, y cwintel mwyaf difreintiedig sydd wedi gweld y gostyngiad mwyaf mewn achosion o bydredd dannedd (o 15%) ac o ran sgôr dmft gymedrig (o 0.6). Nid oes unrhyw dystiolaeth bod anghydraddoldeb yn cynyddu.Dywedodd Vaughan Gething, yr Ysgrifennydd Iechyd:
a reduction in the proportion of children with decay between 2007-08 (47.6%) and 2015-16 (34.2%). This represents continuing improvement of the proportion of children who have no obvious decay experience by age 5. In 2015-16 in a class of 30 children 20 will have no decay experience. This compares with 16 decay free in a class of 30 children in 2007-08;the all-Wales mean decay experience (decayed missing and filled teeth - dmft) has also continued to reduce from 1.98 in 2007-08 to 1.22 in 2015-16. This represents a 38% reduction in mean dmft scores in 9 years.in 2007-08, 14 children out of a class size of 30 would have decay experience, with an average of 4.2 teeth affected. By 2015-16 this had fallen to 10 children out of a class of 30, with an average of 3.6 decayed teeth;dental disease levels in children in Wales continue to improve across all social groups. In absolute terms, the most deprived quintile have seen the largest reduction in decay prevalence (by 15%) and mean dmft score (by 0.6). There is no evidence of widening inequalities.Health Secretary Vaughan Gething said: