Debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated NiTi wires
Abstract Objective To evaluate the amount of apically extruded debris, percentage of foraminal enlargement and apical foramen (AF) deformation that occurred during root canal preparation with different reciprocation systems: Reciproc, WaveOne (M-Wire), and ProDesign R (Shape Memory Technology Wire)...
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| Format: | Article |
| Language: | English |
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University of São Paulo
2018-01-01
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| Series: | Journal of Applied Oral Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572018000100413&lng=en&tlng=en |
| _version_ | 1818163110832242688 |
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| author | Myrna Maria Arcanjo Frota Ricardo Affonso Bernardes Rodrigo Ricci Vivan Nilton Vivacqua-Gomes Marco Antonio Hungaro Duarte Bruno Carvalho de Vasconcelos |
| author_facet | Myrna Maria Arcanjo Frota Ricardo Affonso Bernardes Rodrigo Ricci Vivan Nilton Vivacqua-Gomes Marco Antonio Hungaro Duarte Bruno Carvalho de Vasconcelos |
| author_sort | Myrna Maria Arcanjo Frota |
| collection | DOAJ |
| description | Abstract Objective To evaluate the amount of apically extruded debris, percentage of foraminal enlargement and apical foramen (AF) deformation that occurred during root canal preparation with different reciprocation systems: Reciproc, WaveOne (M-Wire), and ProDesign R (Shape Memory Technology Wire) at two different working lengths (WLs): 0.0 and 1.0 mm beyond the AF. Material and methods The AF of 120 root canals in 60 mesial roots of mandibular molars were photographed with stereomicroscope and randomly assigned into four groups: manual, Reciproc (REC), WaveOne (WO), and ProDesign R (PDR); subsequently, they were further subdivided according to the WL (n=15). Teeth were instrumented, coupled to a dual collecting chamber, and then another photograph of each AF was captured. Extrusion was analysed by determining the weight of extruded debris. Each AF diameter was measured in pre- and post-instrumentation images to determine deformation, which was analysed, and afterwards the final format of AFs was classified (circular/oval/deformed). Results We found no significant differences when analysing each system at different WLs. When considering each WL, REC and WO showed highest extrusion values (P<.05); for AF enlargement, differences were observed only for WO, when it was used beyond the AF; differences were observed among M-Wire groups beyond the AF (P<.05). AF deformation was observed in all groups; PDR showed the lowest AF deformation values at both WLs; M-Wire groups showed 50% strain beyond the AF. Conclusion Authors concluded that beyond the apical limit, the alloy and taper are important aspects when considering extrusion and deformation. |
| first_indexed | 2024-12-11T16:44:21Z |
| format | Article |
| id | doaj.art-bf685a30ef574670bca55a33787af5e7 |
| institution | Directory Open Access Journal |
| issn | 1678-7765 |
| language | English |
| last_indexed | 2024-12-11T16:44:21Z |
| publishDate | 2018-01-01 |
| publisher | University of São Paulo |
| record_format | Article |
| series | Journal of Applied Oral Science |
| spelling | doaj.art-bf685a30ef574670bca55a33787af5e72022-12-22T00:58:15ZengUniversity of São PauloJournal of Applied Oral Science1678-77652018-01-0126010.1590/1678-7757-2017-0215S1678-77572018000100413Debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated NiTi wiresMyrna Maria Arcanjo FrotaRicardo Affonso BernardesRodrigo Ricci VivanNilton Vivacqua-GomesMarco Antonio Hungaro DuarteBruno Carvalho de VasconcelosAbstract Objective To evaluate the amount of apically extruded debris, percentage of foraminal enlargement and apical foramen (AF) deformation that occurred during root canal preparation with different reciprocation systems: Reciproc, WaveOne (M-Wire), and ProDesign R (Shape Memory Technology Wire) at two different working lengths (WLs): 0.0 and 1.0 mm beyond the AF. Material and methods The AF of 120 root canals in 60 mesial roots of mandibular molars were photographed with stereomicroscope and randomly assigned into four groups: manual, Reciproc (REC), WaveOne (WO), and ProDesign R (PDR); subsequently, they were further subdivided according to the WL (n=15). Teeth were instrumented, coupled to a dual collecting chamber, and then another photograph of each AF was captured. Extrusion was analysed by determining the weight of extruded debris. Each AF diameter was measured in pre- and post-instrumentation images to determine deformation, which was analysed, and afterwards the final format of AFs was classified (circular/oval/deformed). Results We found no significant differences when analysing each system at different WLs. When considering each WL, REC and WO showed highest extrusion values (P<.05); for AF enlargement, differences were observed only for WO, when it was used beyond the AF; differences were observed among M-Wire groups beyond the AF (P<.05). AF deformation was observed in all groups; PDR showed the lowest AF deformation values at both WLs; M-Wire groups showed 50% strain beyond the AF. Conclusion Authors concluded that beyond the apical limit, the alloy and taper are important aspects when considering extrusion and deformation.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572018000100413&lng=en&tlng=enEndodonticsNickelTitaniumRoot canal preparation |
| spellingShingle | Myrna Maria Arcanjo Frota Ricardo Affonso Bernardes Rodrigo Ricci Vivan Nilton Vivacqua-Gomes Marco Antonio Hungaro Duarte Bruno Carvalho de Vasconcelos Debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated NiTi wires Journal of Applied Oral Science Endodontics Nickel Titanium Root canal preparation |
| title | Debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated NiTi wires |
| title_full | Debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated NiTi wires |
| title_fullStr | Debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated NiTi wires |
| title_full_unstemmed | Debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated NiTi wires |
| title_short | Debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated NiTi wires |
| title_sort | debris extrusion and foraminal deformation produced by reciprocating instruments made of thermally treated niti wires |
| topic | Endodontics Nickel Titanium Root canal preparation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572018000100413&lng=en&tlng=en |
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