Modification of the working length after rotary instrumentation. A comparative study of four systems
Med. oral patol. oral cir. bucal (Internet)
; 14(3): e153-157, mar. 2009. ilus, tab
Artigo
em Inglês
| IBECS
| ID: ibc-136128
Biblioteca responsável:
ES1.1
Localização: BNCS
ABSTRACT
Objective:
To determine variation in post-instrumentation working length and root area in the following rotary systems ProTaper, RaCe, Mtwo and K3. Studydesign:
A sample of 40 resin blocks with double curvature (at 14 and 16 mm) and a 33o angle was used. Working length was verified with a digital measure using a number 10 K file. The specific sequence for each rotary system was followed. The canal was measured between each file, and the variation noted to determine which file showed the greatest variation within a same system and the different systems were compared. 1.5 X pre and post-instrumentation microscopic photographs were taken and measurements of the area were taken with an im- age analysis programme.Results:
The area was found to increase by the following amounts ProTaper 21.85 mm2; Mtwo 20.16 mm2; K3 17.24 mm2 and RaCe 16.09 mm2. The differences in variation of the working length were ProTaper 0.81 mm; Mtwo 1.07 mm; K3 0.31 mm and RaCe 0.81 mmConclusions:
The values for the variation in working length are clinically not very significant. All the rotary systems analysed showed a tendency to straighten the canal and eliminate the apical curvature, and the ProTaper system was found to produce the greatest modification to the canal area and structure (AU)
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Coleções:
Bases de dados nacionais
/
Espanha
Base de dados:
IBECS
Assunto principal:
Preparo de Canal Radicular
Limite:
Humanos
Idioma:
Inglês
Revista:
Med. oral patol. oral cir. bucal (Internet)
Ano de publicação:
2009
Tipo de documento:
Artigo
Instituição/País de afiliação:
Universidad CEU-Cardenal Herrera/Spain
/
Universitat de València/Spain