Chun-Ju Chen1, Shinn-Jyh Ding1,2, Chun-Cheng Chen2,3. 1. 1 Institute of Oral Science, Chung Shan Medical University , Taichung City, Taiwan . 2. 2 School of Dentistry, Chung Shan Medical University , Taichung City, Taiwan . 3. 3 Department of Dentistry, Chung Shan Medical University Hospital , Taichung City, Taiwan .
Abstract
OBJECTIVE: The study is to evaluate the effect of surface roughness of titanium implants on bacterial adhesion and then to investigate the efficacy of the three cleaning treatments for bacterial removal in titanium surfaces. BACKGROUND DATA: Although surface debridement is the basic element for treatment of peri-implantitis to reduce bacterial adhesion, adjunctive therapies such as antiseptics and laser debridement have been proposed to improve the nonsurgical treatment options of the peri-implant infection. METHODS: Titanium specimens were divided into five groups: No. 1200 grit sandpaper polishing (Grit), 50 μm (SB50), 100 μm (SB100), and 250 μm Al2O3 sandblasting (SB250), and sandblasting, large-grit, and acid-etching (SLA). Surface roughness (Ra), contact angle, and surface morphology were examined. The subsequent adhesion of Escherichia coli on the different substrates was assayed. After 8 h of bacterial culture, three different cleaning treatments, including plastic curettage, air-powder abrasive system, and Er:YAG laser debridement, were applied on the specimens. RESULTS: The Ra value changed from the lower value of 0.2 μm for the Grit group to the significantly higher value of 2.7 μm for the SB250 group, indicating a significant difference from the SLA group (2.0 μm). The average contact angle of SLA (101°) was significantly higher than the other groups. No significant difference in E. coli bacterial adhesion was found among the all roughened groups, except the SB50 and SB250 groups at 12 h of culture. The use of three cleaning treatments did not induce significant surface alterations. However, the E. coli adhesion was significantly reduced in the air-powder abrasive system and laser debridement in comparison with that treated with the plastic curettage. CONCLUSIONS: Laser debridement could be a useful cleaning method for peri-implantitis therapy.
OBJECTIVE: The study is to evaluate the effect of surface roughness of titanium implants on bacterial adhesion and then to investigate the efficacy of the three cleaning treatments for bacterial removal in titanium surfaces. BACKGROUND DATA: Although surface debridement is the basic element for treatment of peri-implantitis to reduce bacterial adhesion, adjunctive therapies such as antiseptics and laser debridement have been proposed to improve the nonsurgical treatment options of the peri-implant infection. METHODS: Titanium specimens were divided into five groups: No. 1200 grit sandpaper polishing (Grit), 50 μm (SB50), 100 μm (SB100), and 250 μm Al2O3 sandblasting (SB250), and sandblasting, large-grit, and acid-etching (SLA). Surface roughness (Ra), contact angle, and surface morphology were examined. The subsequent adhesion of Escherichia coli on the different substrates was assayed. After 8 h of bacterial culture, three different cleaning treatments, including plastic curettage, air-powder abrasive system, and Er:YAG laser debridement, were applied on the specimens. RESULTS: The Ra value changed from the lower value of 0.2 μm for the Grit group to the significantly higher value of 2.7 μm for the SB250 group, indicating a significant difference from the SLA group (2.0 μm). The average contact angle of SLA (101°) was significantly higher than the other groups. No significant difference in E. coli bacterial adhesion was found among the all roughened groups, except the SB50 and SB250 groups at 12 h of culture. The use of three cleaning treatments did not induce significant surface alterations. However, the E. coli adhesion was significantly reduced in the air-powder abrasive system and laser debridement in comparison with that treated with the plastic curettage. CONCLUSIONS: Laser debridement could be a useful cleaning method for peri-implantitis therapy.
Authors: Sini Riivari; Elisa Närvä; Ilkka Kangasniemi; Jaana Willberg; Timo Närhi Journal: J Biomed Mater Res B Appl Biomater Date: 2022-06-22 Impact factor: 3.405