Abstract: An aspirator system for dentistry in which a hollow handle or holder has removable collector ends for insertion into a patient's mouth, which ends are sometimes called aspirator tips. In one embodiment of an aspirator tip, a relatively firm and bulbous end is provided adjacent the entrance to a bore in communication with a vacuum source; this tissue-contacting end has an open face and a generally hemispherical back. Within the open face lies a series of converging ridges, which are provided to trap solid particles having a size of about 2mm or greater. Since the ridges are completely exposed and there are no over-hanging ridges or the like, it is relatively easy to clean the face of the aspirator tip with a stiff brush or the like. The aspirator tip can be rotated at will with respect to the handle in order to achieve substantially any desired position within a patient's mouth. Also, aspirator tips of any of several designs may be interchangeably inserted into the handle.