Ni Ti Wires

Nickel-Titanium (NiTi) Orthodontic Wires

Nickel-titanium (NiTi) orthodontic wires are super-elastic shape-memory archwires used in the initial alignment and levelling stage of fixed-appliance orthodontic treatment. Unlike rigid stainless-steel wires, NiTi delivers continuous low-magnitude force across a wide deflection range — the wire deforms when engaged into severely crowded brackets and slowly recovers toward its preformed arch shape, producing biologically optimal tooth movement with minimal patient discomfort. NiTi archwires are supplied in superelastic, heat-activated, reverse-curve and copper-NiTi (CuNiTi) formulations spanning round and rectangular cross-sections across all standard arch forms. Dentalkart stocks the Koden Superelastic NiTi Archwires Round (Pack of 10) alongside heat-activated, reverse-curve and copper-NiTi archwires from Koden, OSL, U Ortho, Prime Ortho, Phyx and D-Tech, trusted by 50,000+ dentists across 110000+ Indian pincodes.

Types of Nickel-Titanium Archwires

Superelastic NiTi Archwires

Superelastic NiTi archwires are the standard alignment-stage wire, delivering near-constant force across the active deflection range — ideal for initial levelling, alignment of moderately crowded dentition and routine NiTi-stage progression from 0.014" round through 0.018"x0.025" rectangular sizing across both round and rectangular cross-sections.

Heat-Activated NiTi Archwires

Heat-activated NiTi archwires such as the Koden Heat Activated NiTi Archwires Rectangular (Pack of 5) are martensitic at room temperature and become austenitic at intra-oral temperature, allowing easy chair-side engagement into severely crowded brackets while still delivering full alignment force once the wire warms to body temperature.

Reverse-Curve NiTi Archwires

Reverse-curve NiTi archwires such as the Koden Reverse Curve NiTi Archwires Rectangular (Pack of 2) are preformed with a Spee-curve reversal to correct deep-bite cases, intrude lower incisors and level the curve of Spee without sectional auxiliaries or vertical elastics during the working stage.

Copper-NiTi (CuNiTi) Archwires

Copper-NiTi archwires such as the OSL Copper NiTi Ovoid Form Archwires Rectangular (Pack of 10) add copper to the binary NiTi alloy to give the wire a temperature-defined transition temperature, allowing the orthodontist to specify 27°C, 35°C or 40°C CuNiTi variants for predictable force delivery matched to patient sensitivity and treatment stage.

When Are NiTi Wires Used?

NiTi wires are used at the very start of fixed-appliance orthodontic treatment for initial alignment of crowded teeth, levelling of the dentition and as the first archwire engaged at bracket bond-up. They remain in place during the alignment-and-levelling phase until the dentition has straightened sufficiently to accept rigid stainless-steel working wires for space closure, en-masse retraction and finishing — at which point the case transitions to stainless-steel orthodontic wires for the working and finishing stages.

How to Choose the Right NiTi Wire

For the very first archwire on a severely crowded case, pick heat-activated NiTi in 0.012", 0.014" or 0.016" round sizing — its room-temperature flexibility allows chair-side engagement into displaced brackets that superelastic NiTi cannot reach. For routine moderately-crowded cases, choose superelastic NiTi in the same round sizing. For deep-bite cases needing Spee-curve correction, switch to reverse-curve NiTi during the levelling phase. For patient-comfort-sensitive cases and prolonged alignment work, use 35°C or 40°C CuNiTi to deliver gentler initial force. Progress through round sizings (0.014, 0.016, 0.018) before transitioning to rectangular NiTi.

Brands of NiTi Wires at Dentalkart

The catalogue features the Koden range covering Superelastic, Heat-Activated and Reverse-Curve NiTi archwires in round and rectangular formats; the OSL range including Heat-Activated, Reverse-Curve, Super-Elastic Square-Form and Copper-NiTi Ovoid archwires; the U Ortho range covering NiTi standard ovoid, rectangular and reverse-curve variants; Prime Ortho Heat-Activated and Reverse-Curve RCS archwires; Phyx preformed heat-activated; Double UU Ortho superelastic; Fox Solo preformed ovoid; and D-Tech superelastic rectangular — covering every NiTi variant across all standard arch forms and pack sizes.

Why Buy NiTi Wires from Dentalkart

Dentalkart sources nickel-titanium orthodontic archwires directly from authorised manufacturers including Koden, OSL, U Ortho and Prime Ortho, with batch-coded packaging, cash-on-delivery, GST invoices and 110000+ pincode coverage across India. Practices can pair NiTi alignment wires with stainless-steel working wires and the wider orthodontic archwire programme for complete alignment-to-finishing stage coverage in one bulk order.

What is a nickel-titanium orthodontic wire?

A nickel-titanium orthodontic wire is a super-elastic shape-memory archwire used in the initial alignment and levelling stage of fixed-appliance orthodontic treatment. Unlike rigid stainless-steel wires, NiTi delivers continuous low-magnitude force across a wide deflection range, slowly recovering toward its preformed arch shape and producing biologically optimal tooth movement with minimal patient discomfort.

What is the difference between superelastic and heat-activated NiTi?

The difference between superelastic and heat-activated NiTi is the transition behaviour: superelastic NiTi is fully austenitic at room temperature and delivers near-constant force across the active deflection range, while heat-activated NiTi is martensitic and flexible at room temperature (allowing chair-side engagement into severely crowded brackets) and becomes austenitic at body temperature for full force delivery once warmed.

When should reverse-curve NiTi archwires be used?

Reverse-curve NiTi archwires should be used in deep-bite cases needing Spee-curve correction during the alignment-and-levelling phase of orthodontic treatment. The preformed Spee-curve reversal intrudes lower incisors and levels the curve of Spee without requiring sectional auxiliaries or vertical elastics, simplifying the working-stage transition.

What is the advantage of copper-NiTi over standard NiTi?

The advantage of copper-NiTi over standard NiTi is a temperature-defined transition that lets the orthodontist specify 27°C, 35°C or 40°C variants for predictable force delivery matched to patient sensitivity, ambient mouth temperature and treatment stage. Higher transition-temperature CuNiTi delivers gentler initial force ideal for patient-comfort-sensitive cases and prolonged alignment work.

How long does a NiTi archwire stay in place?

A NiTi archwire typically stays in place 4–8 weeks per sizing during the alignment-and-levelling phase before progressing to the next archwire diameter. The full NiTi sequence — from initial 0.012" round through to 0.018"x0.025" rectangular — usually takes 4–6 months depending on initial crowding severity, after which the case transitions to stainless-steel working wires.