Castillo Marin Miguel Christian, Abu Hasna Amjad, Frozoni Marcos, Diamantino Mariana Gadelho Gimenez, Rocha Caroline Trefiglio, Valera Marcia Carneiro, Carvalho Cláudio Antonio Talge
Department of Restorative Dentistry, Endodontics Division, Institute of Science and Technology, São Paulo State University (ICT-UNESP), São José dos Campos 12245-000, SP, Brazil.
School of Dentistry, Universidad Espíritu Santo, Samborondón 092301, Ecuador.
Dent J (Basel). 2024 Oct 16;12(10):330. doi: 10.3390/dj12100330.
BACKGROUND/OBJECTIVES: This study aimed to evaluate the effect of ProDesign Logic files 45.01 and 50.01 on apical foramen wear and shape transformation after foraminal enlargement at tooth length (TL) and 1 mm beyond.
Sixty freshly extracted single-rooted lower human premolars teeth were distributed randomly into five groups ( = 12): Group 1 (40.05 WL) (control): No foraminal enlargement, Group 2 (45.01 TL): Specimens underwent foraminal enlargement with 45.01 Prodesign Logic file at TL; Group 3 (45.01 TL + 1): Specimens underwent foraminal enlargement with 45.01 Prodesign Logic file at 1 mm beyond TL; Group 4 (50.01 TL): Specimens underwent foraminal enlargement with 50.01 Prodesign Logic file at TL; Group 5 (50.01 TL + 1): Specimens underwent foraminal enlargement with 50.01 Prodesign Logic file at 1 mm beyond TL. Scanning electron microscopy was used to evaluate apical foramen variations and shape alterations. Data were analyzed by Student's -test, Kruskal-Wallis, and Mann-Whitney test.
Significant differences ( < 0.01) were observed among all tested groups compared to the control group in terms of the average worn area of the apical foramen. Foraminal enlargement led to significant shape transformation, resulting in round-shaped foramina.
ProDesign Logic 45.01 and 50.01 files at TL causes notable wear and round-shaped foramina.
背景/目的：本研究旨在评估ProDesign Logic锉45.01和50.01在牙长（TL）及超出1mm处进行根尖孔扩大后对根尖孔磨损和形状改变的影响。
60颗新鲜拔除的单根人下颌前磨牙随机分为五组（每组n = 12）：第1组（40.05 WL）（对照组）：不进行根尖孔扩大；第2组（45.01 TL）：标本在牙长（TL）处用45.01 Prodesign Logic锉进行根尖孔扩大；第3组（45.01 TL + 1）：标本在超出牙长（TL）1mm处用45.01 Prodesign Logic锉进行根尖孔扩大；第4组（50.01 TL）：标本在牙长（TL）处用50.01 Prodesign Logic锉进行根尖孔扩大；第5组（50.01 TL + 1）：标本在超出牙长（TL）1mm处用50.01 Prodesign Logic锉进行根尖孔扩大。采用扫描电子显微镜评估根尖孔的变化和形状改变。数据采用学生t检验、Kruskal-Wallis检验和Mann-Whitney检验进行分析。
与对照组相比，所有测试组在根尖孔平均磨损面积方面均观察到显著差异（P < 0.01）。根尖孔扩大导致显著的形状改变，形成圆形根尖孔。
在牙长（TL）处使用ProDesign Logic 45.01和50.01锉会导致明显磨损并形成圆形根尖孔。
