Pashley E L, Nelson R, Pashley D H
J Dent Res. 1981 Oct;60(10):1742-8. doi: 10.1177/00220345810600100301.
In routine dental practice, anesthetic solutions are injected into tissue sites of widely different distensibilities, under a variety of pressures. The purpose of the present study, during simulated dental practice, was to determine the maximum injection pressures obtained by clinicians during injections in dogs. Regular aspirating dental syringes were used together with dental anesthetic cartridges filled with isotonic saline. Maximum operator injection pressures ranged from 330 to 660 psi (17,061-34,122 mmHg). Those injection sites that were least distensible gave the highest maximum injection pressures: interosseous (21,559 mmHg); incisive papilla (18,224 mmHg); periodontal (17,630 mmHg); hard palate (11,322 mmHg); and intrapulpal (8918 mmHg). More distensible tissue sites gave much lower pressures. The data indicate that dental injection pressures vary widely from several hundred mmHg to several hundred psi, depending on the clinician's physical effort and the distensibility of the tissue.
在常规牙科操作中，麻醉溶液在各种压力下被注射到伸展性差异很大的组织部位。本研究的目的是在模拟牙科操作过程中，确定临床医生在给狗注射时获得的最大注射压力。使用常规的抽吸式牙科注射器以及装有等渗盐水的牙科麻醉药筒。操作者的最大注射压力范围为330至660磅力/平方英寸（17,061 - 34,122毫米汞柱）。那些伸展性最小的注射部位产生的最大注射压力最高：骨间（21,559毫米汞柱）；切牙乳头（18,224毫米汞柱）；牙周（17,630毫米汞柱）；硬腭（11,322毫米汞柱）；和牙髓内（8918毫米汞柱）。伸展性较大的组织部位产生的压力要低得多。数据表明，牙科注射压力从几百毫米汞柱到几百磅力/平方英寸变化很大，这取决于临床医生的体力以及组织的伸展性。
