J Korean Acad Prosthodont.  2001 Feb;39(1):71-83.

The effect of various surface treatment methods on the osseointegration

• Choi JW
• Ann W
• Kim KN
• Heo SJ
• Chang IT
• Han CH
• Baek HG
• Choi YC

Abstract

The purpose of this study was to compare the effects of various surface treatments by measuring removal torque on bone healing around titanium implants. 40 Screw-shaped cp titanium implants with length of 4mm, outer diameter of 3.75mm, and pitch-height of 0.5mm were used. Group 1 was left as machined(control). Group 2 was blasted with 50micrometer Al2O3, group 3 was blasted and etched in etching solution(NH4OH:H2O2:H2O=1:1:5) at 90degrees C for 1 minute, group 4 was blasted and oxidated under pure oxygen at 800degrees C. The implant surface roughness was analyzed with SEM and CLSM(Confocal Laser Scanning Microscope), and implants were placed in proximal tibial metaphysis of 10 New Zealand White rabbits. After 3 months of healing period, removal torque of each implant was measured to compare bone healing around implant. The results obtained were as follows 1. In SEM view, blasting increased the roughness of the surface, but etching of that rough surface decreased the roughness due to the removal of the tip of the peak. Oxidation also decreased the roughness due to formation of needle-like oxide grains on the implant surface. 2. The Sa value from CLSM was least in the machined group(0.47micrometer), greatest in blasted group(1.25micrometer), and the value decreased after etching(0.91micrometer) and oxidation(0.94micrometer). 3. The removal torque of etched group(24.5Ncm) was greater than that of machined group(16.7Ncm)(P<0.05), and was greatest in the oxidated group(40.3Ncm) and the blasted group(34.7Ncm).

MeSH Terms

Edible Grain
Osseointegration*
Oxygen
Rabbits
Titanium
Torque
Oxygen
Titanium