Which Surface Performance Studies Should Be Conducted For The Dental Implant With Sandblasted And Acid-etched Surface At Least?

Surface treatment with sand-blasting and acid-etching is one of the methods for surface modification of dental implants and is also an important factor affecting implant osseointegration. The dental implant with sandblasted and acid-etched surface should be subject to a comprehensive study on surface performance, which should at least include the following: clarifying the sand-blasting particles as well as the particle size and particle size distribution of the sand-blasting particles, and providing the basis for setting various parameters (e.g. sand-blasting pressure, time, sand-blasting speed, angle and distance, etc.) during sand-blasting; clarifying the composition of acid etchant and the ratio thereof (volume ratio or mass ratio), and providing the basis for determining the composition ratio of acid etchants, acid­etching time and conditions; providing the high-resolution product surface drawing after surface treatment and indicating the models of relevant test instruments and equipment used; and providing the analysis data of product surface morphology under electron microscope at different scale of magnifications, which should include quantitative and qualitative analysis, such as analysis on the number and distribution of Class I and II cavities.