Evaluation of frictional forces between ceramic brackets and archwires of different alloys compared with metal brackets
Braz. oral res
; 24(1): 40-45, Jan.-Mar. 2010. ilus, tab
Article
in En
| LILACS
| ID: lil-541511
Responsible library:
BR1.1
ABSTRACT
The aim of this study was to evaluate, in vitro, frictional forces produced by ceramic brackets and arch wires of different alloys. Frictional tests were performed on three ceramic brackets monocrystalline (Inspire ICE), polycrystalline (InVu), polycrystalline with metal slot (Clarity), and one stainless steel bracket (Dyna-Lock). Thirty brackets of each were tested, all with .022" slots, in combination with stainless steel and nickel-titanium wires .019" × .025", at 0° and 10° angulation, in artificial saliva. Arch wires were pulled through the slots at a crosshead speed of 10 mm/min. There were statistically significant differences between the groups of brackets and wires studied (p < .05). The polycrystalline brackets with metal slots had values similar to those of conventional polycrystalline brackets, and the monocrystalline brackets had the highest frictional forces. The nickel-titanium wires produced the lowest friction. The addition of metal slots in the polycrystalline brackets did not significantly decrease frictional values. Nickel-titanium wires produced lower friction than those of stainless steel.
Key words
Full text:
1
Index:
LILACS
Main subject:
Orthodontic Wires
/
Stainless Steel
/
Orthodontic Brackets
Type of study:
Evaluation_studies
Language:
En
Journal:
Braz. oral res
Journal subject:
ODONTOLOGIA
Year:
2010
Type:
Article