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Title: Evaluation of Root-End Preparation with Two Different Endodontic Microsurgery Ultrasonic Tips
Authors: Palma, Paulo J. 
Marques, Joana A. 
Casau, Margarida 
Santos, André 
Caramelo, Francisco 
Falacho, Rui I. 
Santos, João Miguel 
Keywords: apical surgery; endodontic microsurgery; root-end preparation; ultrasonic; ultrasonic tips
Issue Date: 28-Sep-2020
Publisher: MDPI
Serial title, monograph or event: Biomedicines
Volume: 8
Issue: 10
Abstract: 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.
ISSN: 2227-9059
DOI: 10.3390/biomedicines8100383
Rights: openAccess
Appears in Collections:FMUC Medicina - Artigos em Revistas Internacionais
FMUC Med. Dentária - Artigos em Revistas Internacionais
I&D ICBR - Artigos em Revistas Internacionais

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