TORSIONAL AND STIFFNESS PROPERTIES OF CANAL MASTER-U STAINLESS-STEEL AND NITINOL INSTRUMENTS

被引:36
作者
CAMPS, J
PERTOT, WJ
机构
关键词
D O I
10.1016/S0099-2399(06)80298-0
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
The purpose of this study was to compare stiffness and resistance to fracture of stainless steel and nickel titanium Canal Master U instruments. Instruments sizes 20 through 50 were tested according to ANSI/ADA Specification No. 28. Resistance to fracture was determined by twisting and measuring the maximum torque and angular deflection (rotation) at the failure point. Stiffness was determined by measuring the moment required to bend the instrument 45 degrees. Stainless steel and nickel titanium Canal Master U instruments satisfied and far exceeded specification standards for stiffness. They also satisfied and far exceeded the standards for angular deflection at the failure point. Stainless steel Canal Master U met or exceeded the maximum torque at failure standards in all sizes except 50, whereas the nickel titanium instruments met the standards in all sizes except 45 and 50. The mechanical properties of nickel titanium, especially its low bending moment and high angular rotation at failure, encourage further evaluation with clinical studies.
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页码:395 / 398
页数:4
相关论文
共 14 条
[1]  
HUDGINS JJ, 1991, ANGLE ORTHOP, V60, P283
[2]   MECHANICAL-PROPERTIES AND CLINICAL-APPLICATIONS OF ORTHODONTIC WIRES [J].
KAPILA, S ;
SACHDEVA, R .
AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, 1989, 96 (02) :100-109
[3]   DYNAMIC MECHANICAL-PROPERTIES OF STRAIGHT TITANIUM-ALLOY ARCH WIRES [J].
KUSY, RP ;
WILSON, TW .
DENTAL MATERIALS, 1990, 6 (04) :228-236
[4]  
Lautenschlager E P, 1977, J Endod, V3, P175, DOI 10.1016/S0099-2399(77)80092-7
[5]   THERMOMECHANICAL STUDY OF NI-TI ALLOYS [J].
LEE, JH ;
PARK, JB ;
ANDREASEN, GF ;
LAKES, RS .
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, 1988, 22 (06) :573-588
[6]   THE RISK OF PERFORATION IN THE CURVED CANAL - ANTICURVATURE FILING COMPARED WITH THE STEPBACK TECHNIQUE [J].
LIM, SS ;
STOCK, CJR .
INTERNATIONAL ENDODONTIC JOURNAL, 1987, 20 (01) :33-39
[7]   TORSIONAL AND METALLURGICAL PROPERTIES OF ROTARY ENDODONTIC INSTRUMENTS .2. STAINLESS-STEEL GATES GLIDDEN DRILLS [J].
LUEBKE, NH ;
BRANTLEY, WA .
JOURNAL OF ENDODONTICS, 1991, 17 (07) :319-323
[8]   PHYSICAL DIMENSIONS AND TORSIONAL PROPERTIES OF ROTARY ENDODONTIC INSTRUMENTS .1. GATES GLIDDEN DRILLS [J].
LUEBKE, NH ;
BRANTLEY, WA .
JOURNAL OF ENDODONTICS, 1990, 16 (09) :438-441
[9]   TORSIONAL PROPERTIES OF THE CANAL MASTER INSTRUMENT [J].
MASSA, GR ;
NICHOLLS, JI ;
HARRINGTON, GW .
JOURNAL OF ENDODONTICS, 1992, 18 (05) :222-227
[10]   EFFECTS OF STERILIZATION ON THE MECHANICAL-PROPERTIES AND THE SURFACE-TOPOGRAPHY OF NICKEL-TITANIUM ARCH WIRES [J].
MAYHEW, MJ ;
KUSY, RP .
AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, 1988, 93 (03) :232-236