A tooth separator apparatus, according to one embodiment, includes a tong having two arms constructed of a resilient material and having a wedge disposed at each end. The second end part of the source material container is arranged to be detachably coupled to the dispenser means, and the supply of new source material into the source material container is arranged through said outlet opening when said container is detached from the dispenser means. The method also includes providing vehicle dynamic modeling for identifying the motion of the vehicle as it moves around a center of rotation. The mass spectrometer may further include a restriction device for suppressing a flow rate of the gas the ion source inhales and an openclose device for opening and closing a flow of the gas the ion source inhales.