Pearls of the Pacific Utilizing Low Pulsatile Force to Reduce Treatment Time To maximize the benefits of low pulsatile force during initial wire changes (stage 1, leveling and alignment), you can safely and comfortably change wires more frequently (every three to four weeks) than with traditional nickel-titanium (NiTi) wire time intervals (six to seven weeks). Dr. Straty Righellis Oakland, CA This case is a typical example showing initial placement of a 0.0195 × 0.0250-in stainless steel (SS) wire in both arches within the first four months of treatment (Figures 1-4) with excellent compliance when a low pulsatile force appliance Figure 1. Upper and lower 0.014-in NiTi placed on day 1 of treatment. Summer 2019 PCSO Bulletin Figure 2. Upper 0.020-in NiTi and lower 0.018-in NiTi placed 2.5 weeks later. Figure 3. Upper and lower 0.019 × 0.025-in NiTi placed 7 weeks into treatment. 45