Lightspeed technology1/18/2024 ![]() ![]() 04 and for Lightspeed with no statistical significance between the groups. Statistical analysis was performed using the Wilcoxon test (P < 0.05) for straightening, and Fisher's exact-test (P < 0.05) for comparison of cross-sections, for comparison of contact between pre- and postoperative diameter, root canal cleanliness and working time.īoth Ni-Ti systems maintained curvature well the mean degree of straightening was less than 1 degrees for both ProFile. perforations, apical blockages, loss of working length) (protocol), cleaning ability (SEM-evaluation of root canal walls using a five-score system for debris and smear layer), and working time (protocol). The following parameters were evaluated: straightening of curved root canals (superimposition of pre- and postoperative radiographs), postoperative root canal diameter (superimposition of pre- and postoperative photographs of root canal cross-sections), safety issues (file fractures. 04 instruments were used in a crown-down technique. The Lightspeed system was used in a step-back technique: ProFile. ![]() 04 or Lightspeed Ni-Ti instruments to size 45 following the manufacturers' instructions. All root canals were prepared using ProFile. The teeth were then embedded into a muffle system as described by Bramante et al. 04 (Dentsply/ Maillefer, Ballaigues, Switzerland) and Lightspeed (Lightspeed Technology Inc., San Antonio, TX, USA).įifty extracted mandibular molars with root canal curvatures between 20 degrees and 40 degrees were divided into two similar groups having equal mean curvatures. The purpose of this Study was to compare several parameters of root canal preparation using two different rotary nickel-titanium instruments: ProFile. ![]()
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