As the report of Salamat News and quoting the Anna, Doctor Nasrullah Eshghyar, the specialist of oral and maxillofacial, stating that to preserve and promote of oral health should change the toothbrushes every two or three months, he said, if the tooth brush is use over this time, it can hold microorganisms that it would be detrimental to oral health.
He also added: the brushes of those toothbrushes that are used by more than three months will lose their property.
the Professor of Dentistry School in Tehran University said about the properties of a standard toothbrush: it is recommended to people use soft toothbrushes and refrain of shopping the hard and medium-sized toothbrushes that are cause to highly abrasion of enamel. Eshghyar stating that way of brushing is most important of its kind, said: each time brushing should take five minutes and tooth brush should move as rotational on the teeth.