Исследование конструктивных параметров системы ротационных эндодонтических инструментов
Abstract
Design features of the endodontic instrument determine its essential properties. Information about
these design features carries inference about instrument properties and makes possible a comparative analysis
of instruments with different design. The aim of the present work is a quantitative study and analysis of the
FlexMaster instruments design features. Thirty instruments of different size and taper have been included in this
study. SEM examination of all instruments and their cross-sections was made to determine the following design
parameters: tip angle, fluting angle, pitch length, fluting depth, internal and external diameters and the angles of
cutting blade. Design features analysis of the FlexMaster instruments allows pointing out its outstanding characteristics:
1) good cutting efficiency; 2) high torsional resistance; 3) low flexibility; 4) aggressive tip; 5) low controllability
of cutting process due to substantial self-feeding effect.
these design features carries inference about instrument properties and makes possible a comparative analysis
of instruments with different design. The aim of the present work is a quantitative study and analysis of the
FlexMaster instruments design features. Thirty instruments of different size and taper have been included in this
study. SEM examination of all instruments and their cross-sections was made to determine the following design
parameters: tip angle, fluting angle, pitch length, fluting depth, internal and external diameters and the angles of
cutting blade. Design features analysis of the FlexMaster instruments allows pointing out its outstanding characteristics:
1) good cutting efficiency; 2) high torsional resistance; 3) low flexibility; 4) aggressive tip; 5) low controllability
of cutting process due to substantial self-feeding effect.
About the Authors
Т. Беляева
ГБОУ ВПО «Московский государственный медико-стоматологический университет Минздравсоцразвития»
Russian Federation
Russian Federation
Е. Ржанов
ГБОУ ВПО «Московский государственный медико-стоматологический университет Минздравсоцразвития»
Russian Federation
Russian Federation
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Review
For citations:
, . Endodontics Today. 2012;10(1):16-25. (In Russ.)
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