Outline the typical archwire sequence from leveling to finishing in fixed appliances.

Outline the typical archwire sequence from leveling to finishing in fixed appliances.

• A. Start with heavy stainless steel wires for initial leveling, then move to lighter NiTi.
• B. Start with light NiTi wires (0.014"–0.016"), progress to 0.016" NiTi, then to 0.019"×0.025" NiTi or SS, followed by 0.019"×0.025" SS or TMA for leveling and alignment, and finish with heavier rectangular wires (0.019"×0.025") for torque control.
• C. Start with 0.019"×0.025" NiTi, then 0.016" NiTi, then 0.014" NiTi, and finish with 0.008" wires.
• D. Start with 0.018" SS, then 0.021" SS, and skip NiTi entirely.

Answer: (D)

Progressive archwire sequencing relies on increasing stiffness and cross-sectional size to move teeth efficiently while maintaining control. The process begins with a light NiTi wire because its shape memory and superelasticity deliver gentle, continuous forces across imperfect alignments, making leveling and initial alignment smoother and more comfortable. After that initial phase, you advance to larger wires to enhance control without overloading the teeth, commonly moving from light round NiTi to a larger rectangular stage. Finishing then uses heavier rectangular wires, such as a 0.019"×0.025" cross-section in stainless steel or TMA, to refine root torque, occlusion, and overall alignment with solid torque control. Starting with heavy stainless steel or skipping NiTi would create stronger, less forgiving forces too early, increasing tipping and discomfort and compromising the efficiency of leveling and alignment.

Progressive archwire sequencing relies on increasing stiffness and cross-sectional size to move teeth efficiently while maintaining control. The process begins with a light NiTi wire because its shape memory and superelasticity deliver gentle, continuous forces across imperfect alignments, making leveling and initial alignment smoother and more comfortable. After that initial phase, you advance to larger wires to enhance control without overloading the teeth, commonly moving from light round NiTi to a larger rectangular stage. Finishing then uses heavier rectangular wires, such as a 0.019"×0.025" cross-section in stainless steel or TMA, to refine root torque, occlusion, and overall alignment with solid torque control. Starting with heavy stainless steel or skipping NiTi would create stronger, less forgiving forces too early, increasing tipping and discomfort and compromising the efficiency of leveling and alignment.