van der Sluis L W M
Ned Tijdschr Tandheelkd. 2015 Oct;122(10):533-8. doi: 10.5177/ntvt.2015.10.15181.
The aims of root canal irrigation are the chemical dissolution or disruption and the mechanical detachment of pulp tissue, dentin debris and smear layer (instrumentation products), microorganisms (planktonic or biofilm) and their products from the root canal wall, their removal out of the root canal system and their chemical dissolution or disruption. Each of the endodontic irrigation systems has its own irrigant flow characteristics, which should fulfill these aims. Without flow (convection), the irrigant would have to be distributed through diffusion. This process is slow and depends on temperature and concentration gradients. On the other hand, convection is a faster and more efficient transport mechanism. During irrigant flow, frictional forces will occur, for example between the irrigant and the root canal wall (wall shear stress). These frictional forces have a mechanical cleaning effect on the root canal wall. These frictional forces are the result of the flow characteristics related to the different irrigation systems.
根管冲洗的目的是对牙髓组织、牙本质碎屑和玷污层（器械操作产物）、微生物（浮游菌或生物膜）及其产物进行化学溶解或破坏以及机械性分离，将它们从根管壁清除，带出根管系统，并进行化学溶解或破坏。每种根管冲洗系统都有其自身的冲洗液流动特性，这些特性应满足上述目的。若无流动（对流），冲洗液将不得不通过扩散进行分布。此过程缓慢且取决于温度和浓度梯度。另一方面，对流是一种更快且更有效的传输机制。在冲洗液流动过程中，会产生摩擦力，例如冲洗液与根管壁之间的摩擦力（壁面剪应力）。这些摩擦力对根管壁有机械清洁作用。这些摩擦力是与不同冲洗系统相关的流动特性的结果。
