It affirms that nor always the presence of one spots mechanical with devoid aspect in the buccal mucosa means that it is I snow, but yes, it can be I accumulate of substantiates generally metallic of silver caused for maneuvers during obdurate to the silver amalgam. Conclusion After the revision of you vary used bibliographical workmanships in this work, I have to elucidate the following one. In first place: the solar consumption of alcohol and tobacco, radiations and genetic predisposition are factors that condition in the appearance of daily pay-malignant injuries. its precocious treatment aid in the prevention of the cancer that tachometer the buccal socket. From there that it has a necessity incontestable of the general hematologists doctors, to know the characteristics clinical of these injuries, better to obtain to diagnosis and to make the due treatment of these injuries, in the initial phases. The use. abstinence to the alcohol and the tobacco, as well as the use of hats and the solar protectors also helps to prevent some serious injuries and its respective precursory cancers. .