Deficiencies in Root Canal Fillings Subsequent to Adaptive Instrumentation of Oval Canals

• Main Authors: Ajinkya M. Pawar, -, Anuj Bhardwaj, -, Kulvinder S. Banga, -, Gurdeep Singh, -, Anda Kfir, -, Alexander Maniangat Luke, -, Vialyne Dinata, -, Dian Agustin Wahjuningrum, -
• Format: Article PeerReviewed
• Language: English; English; English; English; English
• Published: MDPI 2021
• Subjects: RK Dentistry
• Online Access: https://repository.unair.ac.id/123521/1/1.pdf; https://repository.unair.ac.id/123521/2/1.pdf; https://repository.unair.ac.id/123521/3/1.pdf; https://repository.unair.ac.id/123521/4/1.pdf; https://repository.unair.ac.id/123521/9/1.pdf; https://repository.unair.ac.id/123521/; https://www.mdpi.com/2079-7737/10/11/1074
• Institution: Universitas Airlangga

Simple Summary: Employing a chemo-mechanical preparation, one of the primary procedural phases in endodontic therapy is carefully removing debris, pulp tissue, and bacteria from the root canal system. The cross-sectional root canal shapes comprise circular, oval, long oval, flattened, or irregular. The frequency of oval root canals in the apical third of human teeth is around 25 to 50%. Motorised endodontic files leave almost 60% of the oval root canal perimeter unaffected by their instrumentation, thus resulting in faulty obturation that is required to prevent reinfection and to restrict the passage of microorganisms and toxins to and from the periapical tissue. Abstract: The purpose of this study was to explore the influence of instrumentation and the potential for debris deposition using XP-endo shaper plus (XP-SP) and full-sequence SAF (F-SAF) on the adaption of thermoplastic root canal fillings in oval canals. Following the manufacturer’s instructions, ninety human permanent mandibular incisors with a single oval canal 6 mm from the apex (verified using pre-operative CBCT scanning) were instrumented with XP-SP and F-SAF. Obtura III Max apparatus was used for root canal obturation without the use of a root canal sealer. The roots were then sectioned 6 mm from the apex and examined with a digital stereomicroscope at x25 magnification to assess the root canal fillings. The F-SAF was associated with a significantly higher (p < 0.01) percentage of entire adaptation of the root fillings (76%) compared to the XP-SP (57%). Furthermore, the XP-SP group was also associated with higher (p < 0.01) defective obturation with debris at 17% and with voids at 26%. However, the F-SAF had lower percentages of defective obturations (7% with debris and 17% with voids). The quality of obturation of oval canals instrumented using full-sequence SAF was better.