Local Hemostatic Measures in Oral and Maxillofacial Surgery

Homeostasis is continuous process by which internal body systemmonitor and maintain constant internal environment. Blood is aconnective tissue in fluid state closely connected to all tissues of thebody. It has many roles including transport of nutrients, metabolicproducts, blood gases, thermal regulation hormone signaling system,heat conduction, immune response. Hemostasis is homeostasis ofintravascular blood volume and is an important function of blood.It involves four major steps: vasoconstriction, platelet aggregation,coagulation and fibrinolysis [1]. The phase of vasoconstrictionreduces the blood flow in preparation for platelet aggregation phase.However, the larger the size of the injured blood vessel the lesspossibility of vasoconstriction especially with high pressure.