Antibacterial effects and tensile bonding strength of orthodontic adhesive containing nanohydroxyapatite
10.12016/j.issn.2096-1456.2017.02.005
- Author:
LI Zhen-xia
1
;
CHEN Ting-ting
2
,
3
;
LI Pei-lin
1
;
XUE Jing
1
;
ZHANG Qiang
2
,
3
Author Information
1. 1.State Key Laboratory of Oral Diseases, Sichuan University 2.West China School of Stomatology, Sichuan University
2. Shenzhen Maternity &
3. Child Healthcare Hospital
- Publication Type:Journal Article
- Keywords:
Nanohydroxyapatite;
TiO2;
Orthodontic adhesive;
Antibacterial;
Tensile bonding strength
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2017;25(2):93-96
- CountryChina
- Language:Chinese
-
Abstract:
Objective : To evaluate the tensile bonding strength (TBS) and antibacterial properties when an orthodontic adhesive was added with nanohydroxyapatite (nHAp).
Methods:Light cure orthodontic adhesive (Grengloo) was blended with 2% TiO2 containing nHAp nanoparticles by 0%、10%、20%、30% (w/w), while the control was not blended with nHAp. Brackets were bonded to extracted premolars by these new adhesives. TBS of 5groups were determined, and the adhesive remnant index (ARI) scores were assessed. Composite discs specimen were prepared, incubated with bacterial suspension for 48 h, and tested for antibacterial properties.
Results :No significant difference was found in ARI. The colony unit counts and lactate productionof the groups containing 2%TiO2 were significantly reduced. The colony unit counts and lactate production were without relationship with nHAp. The tensile bonding strength drastically decreased when containing more than 10% nHAp.
Conclusin:nHAp might not enhance the antibacterial effects of Grengloo.
- Full text:纳米羟基磷灰石对托槽粘接剂抗菌性及粘接强度的影响.pdf
