It can pass through enema much more rapidly as mentioned root surface carries develop in a later age carries can affect both the enamel the dentin and the cementum and carries which affect the cementum of the root are particularly difficult to manage.
Because cementum has the least calcium it’s the softest of all the mineral structures in the tooth dark areas which are associated with radiation radiation in certain cancers head and neck cancers destroys salivary glands those patients suffer from lack of saliva.
Which is a protective function and they tend to develop carries at a high rate and there are also something which we refer to as rampant carries which occur in people with bad diets and with very poor oral hygiene they’re also the secondary recurrent carries.
Which can develop under poor fitting restorations in those restorations which are not well adapted or do not form a pair seal the form an area where our patient has a difficulty in plaque control the baby bottle carries of the carries which occur in very young children is I usually occur when there is a very poor oral hygiene and where the diet is very rich in ferment able carbohydrates.
Such carries usually develop within months of tooth eruption and they do so when the diet is rich in sucrose glucose and sticky foods bacteria metabolizes sugar which produces acid this acids then stands to softened and break down the tooth structure therefore a high sugar.