Evaluation of Root-End Preparation with Two Different Endodontic Microsurgery Ultrasonic Tips

Biomedicines

Francisco Caramelo¹  André Santos²  Margarida Casau²  PauloJ. Palma³  JoãoMiguel Santos³  JoanaA. Marques³  RuiI. Falacho⁴ 

[1] Coimbra Institute for Clinical and Biomedical Research (iCBR), Laboratory of Biostatistics and Medical Informatics (LBIM), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal;Dentistry Department, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal;Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal;Institute of Oral Implantology and Prosthodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, Portugal;

关键词: apical surgery;    endodontic microsurgery;    root-end preparation;    ultrasonic;    ultrasonic tips;   

DOI  :  10.3390/biomedicines8100383

来源: DOAJ

【 摘 要 】

The aim of this study is to compare root-end preparation performed with two different ultrasonic tips—CVDentus and NSK—and respective time requirements. After root-end resection, 32 teeth were randomly divided in two groups, according to the ultrasonic tip used for root-end preparation. Preparation time was recorded. Photomicrographs were taken to assess the following parameters: root surface microcracking, marginal integrity and presence of debris. One ultrasonic tip from each group was analyzed through scanning electron microscopy before and after root-end preparation. The significance level was set at α = 0.05. Incidence of microcracks in both groups was 12.5%. Solely intracanal microcracking was found, consistently positioned within the widest side of the remaining dentine. No statistically significant differences were verified between both experimental groups regarding marginal integrity (p = 0.102) and preparation time (p = 0.780), whereas statistical differences (p = 0.003) were found concerning the presence of debris (the minimum registered score was mostly verified in CVDentus group). NSK tips showed major morphological changes, with extensive surface wear and noticeable loss of particles, which was not verified on CVDentus tips. Our findings suggest significant differences regarding root-end preparation walls quality, with CVDentus tips showing better results. Concerning microcracking, as well as preparation time and marginal integrity, both ultrasonic tips showed similar results. Qualitative analysis exposed NSK tips major morphological changes and wear after use, which was not verified on CVDentus tips.

【 授权许可】

Unknown