Patients with oral negative pressure is used to suck the saliva in the mouth, cooling water and dental cast on a device that modern oral negative subsection two kinds: 1, comprehensive dental treatment of Taiwan's own strong and weak absorption, absorption by jet to produce negative pressure, the suction quantity is limited, is not stable, noise is big.
2, the central negative pressure suction system, through a ring of gas or liquid ring pump to produce negative pressure, the underground pipeline connected to the treatment of pipe, take the mouth of gases, solids and liquids, large amount of suction, security, stability. It is the best choice for high-end dental clinic at present.
