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Efficiency, behavior, and clinical properties of superelastic NiTi versus multistranded stainless steel wires: a prospective clinical trial

To investigate efficiency, behavior, and properties of superelastic NiTi vs multistranded stainless steel wires in Begg and preadjusted edgewise appliance (PEA) under moderate to severe crowding conditions. Ninety-six participants (48 male, 48 female), aged 12-18 years old (mean age  =  15.2 ± 1.95)...

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Published in:The Angle orthodontist 2012-09, Vol.82 (5), p.915-921
Main Authors: Sandhu, Satpal S, Shetty, V Surendra, Mogra, Subraya, Varghese, Joseph, Sandhu, Jasleen, Sandhu, Jagpreet S
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Shetty, V Surendra
Mogra, Subraya
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Sandhu, Jasleen
Sandhu, Jagpreet S
description To investigate efficiency, behavior, and properties of superelastic NiTi vs multistranded stainless steel wires in Begg and preadjusted edgewise appliance (PEA) under moderate to severe crowding conditions. Ninety-six participants (48 male, 48 female), aged 12-18 years old (mean age  =  15.2 ± 1.95), with moderate (≤ 6 mm; mean  =  5.3 ± 0.48) to severe (> 6 mm; mean  =  7.9 ± 0.66) initial crowding were distributed into four groups: superelastic NiTi PEA (n  =  24), superelastic NiTi Begg (n  =  24), multistranded (coaxial) stainless steel PEA (n  =  25), and multistranded (coaxial) stainless steel Begg (n = 23). In this study, 0.16-inch superelastic (austenitic active) NiTi and 0.175-inch multistranded (six stranded, coaxial) stainless steel wires were used in a 0.022-inch slot (Roth prescription) PEA and Begg appliance with a follow-up of six weeks. Analysis of variance revealed no significant difference in reduction of crowding between superelastic NiTi PEA and multistranded (coaxial) stainless steel PEA groups, but reduction in crowding was significantly greater in the superelastic NiTi Begg group compared with the multistranded (coaxial) stainless steel Begg group with F (3, 44)  =  8.896, P < .001, and effect size (ω) 0.57 in moderate crowding and F (3, 44)  =  122.341, P < .001, and effect size (ω) 0.93 in severe crowding. Linear regression demonstrated significant (P < .05) positive correlation between amount of initial crowding and reduction in crowding in all groups except the multistranded (coaxial) stainless steel Begg group, wherein a negative correlation did exist. Superelastic NiTi performed significantly better than multistranded (coaxial) stainless steel wire in the Begg appliance. However, in PEA, there was no significant difference.
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Ninety-six participants (48 male, 48 female), aged 12-18 years old (mean age  =  15.2 ± 1.95), with moderate (≤ 6 mm; mean  =  5.3 ± 0.48) to severe (&gt; 6 mm; mean  =  7.9 ± 0.66) initial crowding were distributed into four groups: superelastic NiTi PEA (n  =  24), superelastic NiTi Begg (n  =  24), multistranded (coaxial) stainless steel PEA (n  =  25), and multistranded (coaxial) stainless steel Begg (n = 23). In this study, 0.16-inch superelastic (austenitic active) NiTi and 0.175-inch multistranded (six stranded, coaxial) stainless steel wires were used in a 0.022-inch slot (Roth prescription) PEA and Begg appliance with a follow-up of six weeks. Analysis of variance revealed no significant difference in reduction of crowding between superelastic NiTi PEA and multistranded (coaxial) stainless steel PEA groups, but reduction in crowding was significantly greater in the superelastic NiTi Begg group compared with the multistranded (coaxial) stainless steel Begg group with F (3, 44)  =  8.896, P &lt; .001, and effect size (ω) 0.57 in moderate crowding and F (3, 44)  =  122.341, P &lt; .001, and effect size (ω) 0.93 in severe crowding. Linear regression demonstrated significant (P &lt; .05) positive correlation between amount of initial crowding and reduction in crowding in all groups except the multistranded (coaxial) stainless steel Begg group, wherein a negative correlation did exist. Superelastic NiTi performed significantly better than multistranded (coaxial) stainless steel wire in the Begg appliance. 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Ninety-six participants (48 male, 48 female), aged 12-18 years old (mean age  =  15.2 ± 1.95), with moderate (≤ 6 mm; mean  =  5.3 ± 0.48) to severe (&gt; 6 mm; mean  =  7.9 ± 0.66) initial crowding were distributed into four groups: superelastic NiTi PEA (n  =  24), superelastic NiTi Begg (n  =  24), multistranded (coaxial) stainless steel PEA (n  =  25), and multistranded (coaxial) stainless steel Begg (n = 23). In this study, 0.16-inch superelastic (austenitic active) NiTi and 0.175-inch multistranded (six stranded, coaxial) stainless steel wires were used in a 0.022-inch slot (Roth prescription) PEA and Begg appliance with a follow-up of six weeks. Analysis of variance revealed no significant difference in reduction of crowding between superelastic NiTi PEA and multistranded (coaxial) stainless steel PEA groups, but reduction in crowding was significantly greater in the superelastic NiTi Begg group compared with the multistranded (coaxial) stainless steel Begg group with F (3, 44)  =  8.896, P &lt; .001, and effect size (ω) 0.57 in moderate crowding and F (3, 44)  =  122.341, P &lt; .001, and effect size (ω) 0.93 in severe crowding. Linear regression demonstrated significant (P &lt; .05) positive correlation between amount of initial crowding and reduction in crowding in all groups except the multistranded (coaxial) stainless steel Begg group, wherein a negative correlation did exist. Superelastic NiTi performed significantly better than multistranded (coaxial) stainless steel wire in the Begg appliance. However, in PEA, there was no significant difference.</abstract><cop>United States</cop><pub>Edward H Angle Education and Research Foundation, Inc</pub><pmid>22225530</pmid><doi>10.2319/100311-622.1</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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ispartof The Angle orthodontist, 2012-09, Vol.82 (5), p.915-921
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language eng
recordid cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_8823112
source PubMed Central
subjects Adolescent
Analysis of Variance
Child
Dental Alloys - chemistry
Dental Stress Analysis
Elasticity
Female
Humans
Male
Malocclusion - therapy
Mandible - anatomy & histology
Materials Testing
Nickel - chemistry
Original
Orthodontic Appliance Design - instrumentation
Orthodontic Wires
Prospective Studies
Regression Analysis
Stainless Steel - chemistry
Titanium - chemistry
Tooth Movement Techniques - instrumentation
title Efficiency, behavior, and clinical properties of superelastic NiTi versus multistranded stainless steel wires: a prospective clinical trial
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