Moeller, L.5; Wenzel, A.8; Wegge-Larsen, A. M.6; Ding, M.7; Kirkevang, L. L.8
1 Aarhus University2 Department of Dentistry and Oral Health - Department of Prosthetic Dentistry, Department of Dentistry and Oral Health, Health, Aarhus University3 Aarhus University Press4 Department of Dentistry and Oral Health - Department of Oral Radiology, Department of Dentistry and Oral Health, Health, Aarhus University5 Studieadministrationen, Aarhus School of Business, Aarhus BSS, Aarhus University6 The Danish Army health services, Royal Dragoons, Holstebro7 Department of Orthopaedics and Traumatology, Holsteboro Central Hospital, Denmark.8 Department of Dentistry and Oral Health - Department of Oral Radiology, Department of Dentistry and Oral Health, Health, Aarhus University
Abstract Objective. The aim of this study was to compare the presence of voids in root fillings performed in oval and ribbon-shaped canals with two root filling techniques, lateral compaction technique (LCT) or hybrid technique (HT), a combination of a gutta-percha masterpoint and thermoplastic gutta-percha. Furthermore, the obturation time for the two techniques was evaluated. Materials and methods. Sixty-seven roots with oval and ribbon-shaped canals were prepared using Profile Ni-Ti rotary files. After preparation, the roots were randomly allocated to two groups according to root filling technique. All roots were filled with AH plus and gutta-percha. Group 1 was filled using LCT (n = 34) and group 2 was filled using HT (n = 33). The obturation time was measured in 30 cases evenly distributed between the two techniques. Voids in relation to the root canal fillings were assessed using cross-section images from Micro-computed Tomography scans. Results. All root canal fillings had voids. Permutation test showed no statistically significant difference between the two root filling techniques in relation to presence of voids (p = 0.092). A statistically significant difference in obturation time between the two techniques was found (p <0.001). Conclusion. The present study found no statistically significant difference in percentage of voids between two root filling techniques. A 40% reduction in obturation time was found for the HT compared to the LCT.
Acta Odontologica Scandinavica, 2013, Vol 71, Issue 3-4, p. 689-696