Maness W L, Roeber F W, Clark R E, Cataldo E, Riis D, Haddad A W
J Prosthet Dent. 1978 Sep;40(3):304-8. doi: 10.1016/0022-3913(78)90037-9.
This investigation was designed to determine the differences in tissue alteration produced by electrosurgical machines with different carrier frequencies and waveforms. Histologic analysis showed that: 1. The machine with full-wave rectification and the lowest frequency of operation (machine I, 1.7 MHz) produced significantly greater tissue alteration in the superficial tissue layers than the full-wave rectification machines with higher frequencies of operation. 2. The continuous-output waveform produced significantly less tissue alteration in the superficial tissue layers than the modulated type at the same frequency of operation. 3. Histologically, the experimental defect showed a band of coagulation necrosis approximately 50 mu wide along the margin of the incision. Tissue destruction decreased laterally and inferiorly from the surface of the defect. 4. The experimental defect was similar in shape to the physical form of the cutting electrode.
本研究旨在确定具有不同载波频率和波形的电外科设备所产生的组织改变差异。组织学分析表明：1. 全波整流且运行频率最低的设备（设备I，1.7MHz）在浅表组织层产生的组织改变明显大于运行频率较高的全波整流设备。2. 在相同运行频率下，连续输出波形在浅表组织层产生的组织改变明显少于调制型波形。3. 组织学上，实验缺损在切口边缘显示出一条约50微米宽的凝固性坏死带。组织破坏从缺损表面向侧面和下方逐渐减少。4. 实验缺损的形状与切割电极的物理形态相似。
