Effect of Endo-Z bur or Bladesonic ultrasonic tip on the adaptation of filling material. A micro-CT study

Author(s)

Pedro Henrique Fiorin de Souza ^[1] ; Airton Oliveira Santos-Junior ^[2] ; Jáder Camilo Pinto ^[3] ; Karina Ines Medina Carita Tavares ^[4] ; Juliane Maria Guerreiro-Tanomaru ^[5] ; Mário Tanomaru-Filho ^[6]

Affiliation

^[1] Universidade Estadual Paulista - Brasil

^[2] Universidade Estadual Paulista - Brasil

^[3] Centro Universitário Presidente Tancredo de Almeida Neves - Brasil

^[4] Universidade Estadual Paulista - Brasil

^[5] Universidade Estadual Paulista - Brasil

^[6] Universidade Estadual Paulista - Brasil

• Document type: Journal article
• Source: Brazilian Dental Journal; v. 34, n. 5, p. 29-35, 2023-12-22.

Abstract

Abstract This study aimed to evaluate the effect of apicoectomy performed with a bur or an ultrasonic tip on the adaptation of the filling material to root canal dentin. Twenty human mandibular incisors were selected and prepared with a ProDesign Logic system up to diameter 40/.05. The root canals were filled with Bio-C Sealer (Angelus, PR, Brazil) using the single cone technique and were stored at 37ºC and 95% relative humidity for 7 days. After this period, the apicoectomy of the 3 millimeters of the root apex was performed using Endo-Z bur (Dentsply Sirona) or Bladesonic ultrasonic tip (Helse Ultrasonic, Santa Rosa de Viterbo, Brazil) (n=10). The specimens were scanned by micro-computed tomography (micro-CT; SkyScan 1176) with a voxel size of 8.74 µm after obturation and after apicoectomy. The percentage of voids at the interface between the filling material and the root canal wall was evaluated in the apical 4 mm of the root after apicoectomy, besides the time cutting to both devices. The data obtained were submitted to paired and unpaired t-tests (α = 0.05). Endo-Z and Bladesonic increased the percentage of voids between the filling material and the dentin after apicectomy (p<0.05), and they were similar (p>0.05). Endo-Z has a shorter time to perform apicoectomy compared to Bladesonic (p<0.05). Apicectomies with Endo-Z or Bladesonic could harm the material/dentin interface, while the Endo-Z bur was faster than the Bladesonic ultrasonic tip. (AU)

• FAPESP's process: 17/19049-0 - Evaluation of the root canal treatment procedures, physicochemical and biological properties of tricalcium silicate-based materials
• Grantee: Mario Tanomaru Filho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 20/11011-7 - Physicochemical and biological characteristics of clinker with different particle sizes besides root repair cements and root canal sealers based on calcium silicate
• Grantee: Karina Ines Medina Carita Tavares
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 19/23717-4 - Micro-CT analysis of root surface and root canal filling after apicectomy by different methods
• Grantee: Pedro Henrique Fiorin de Souza
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• FAPESP's process: 20/11012-3 - Comparative evaluation between micro-CT and CBCT using the e-Vol DX software in the analysis of obturation in oval canals and dentinal thickness in MB1 and MB2 canals of maxillary molars after preparation and retreatment
• Grantee: Airton Oliveira Santos Junior
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 21/11496-3 - Synthesis of new reparative biomaterial, evaluation of calcium silicate materials and analysis of the effect of the application of bioglass in the treatment of dentin and in the coating of Gutta percha in the interaction with bioceramic root canal sealers
• Grantee: Mario Tanomaru Filho
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/14305-9 - Evaluation of new substances for root canal irrigation and calcium silicate-based endodontic sealers
• Grantee: Juliane Maria Guerreiro Tanomaru
• Support Opportunities: Regular Research Grants