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Comparison of CAD/CAM abutment and prefabricated abutment in Morse taper internal type implant after cyclic loading: Axial displacement, removal torque, and tensile removal force

Yi Y, Heo SJ, Koak JY, Kim SK

PURPOSE: The purpose of this study was to compare computer-aided design/computer-aided manufacturing (CAD/CAM) abutment and prefabricated abutment in Morse taper internal connection type implants after cyclic loading. MATERIALS AND METHODS: The...
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Ageing assessment of zirconia implant prostheses by three different quantitative assessment techniques

Kyaw PP, Pongprueksa P, Anuchitolarn W, Sirinukunwatta K, Suputtamongkol K

PURPOSE: To evaluate the influence of cyclic loading on phase transformation of zirconia abutments and to compare the effectiveness of three different quantitative ageing assessment techniques. MATERIALS AND METHODS: Thirty two...
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Screw loosening and changes in removal torque relative to abutment screw length in a dental implant with external abutment connection after oblique cyclic loading

Lee JH, Cha HS

PURPOSE: This study investigated the effects of abutment screw lengths on screw loosening and removal torque in external connection implants after oblique cyclic loading. MATERIALS AND METHODS: External connection implants were...
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Effect of abutment screw length and cyclic loading on removal torque in external and internal hex implants

Mohammed H, Lee JH, Bae JM, Cho HW

PURPOSE: The purpose of this study was to evaluate the effects of abutment screw length and cyclic loading on the removal torque (RTV) in external hex (EH) and internal hex...
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Effect of cyclic loading and retightening on reverse torque value in external and internal implants

Cho WR, Huh YH, Park CJ, Cho LR

PURPOSE: The aim of this study was to evaluate the effect of cyclic loading and screw retightening on reverse torque value (RTV) in external and internal type implants. MATERIALS AND METHODS:...
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A comparative study of gold UCLA-type and CAD/CAM titanium implant abutments

Park JM, Lee JB, Heo SJ, Park EJ

PURPOSE: The aim of this study was to evaluate the interface accuracy of computer-assisted designed and manufactured (CAD/CAM) titanium abutments and implant fixture compared to gold-cast UCLA abutments. MATERIALS AND METHODS:...
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Effect of cyclic loading on axial displacement of abutment into implant with internal tapered connection: a pilot study

Seol HW, Heo SJ, Koak JY, Kim SK, Han CH

PURPOSE: To evaluate the axial displacement of implant-abutment assembly after cyclic loading in internal tapered connection system. MATERIALS AND METHODS: External butt-joint connection implant and internal tapered connection implant were connected...
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Screw Joint Stability under Cyclic Loading of Zirconia Implant Abutments

Lee MS, Suh KW, Ryu JJ

PURPOSE: The purpose of this study was to evaluate the effect of abutment material on screw-loosening before and after cyclic loading. Among the different materials of abutments, zirconia and metal...
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Fatigue fracture of different dental implant system under cyclic loading

Park WJ, Cho IH

STATEMENT OF PROBLEM: Problems such as loosening and fractures of retained screws and fracture of implant fixture have been frequently reported in implant prosthesis. PURPOSE: Implant has weak mechanical properties against...
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A controlled cyclic loading on the surface treated and bonded ceramic: Staircase method

Yi YJ

  • KMID: 2118761
  • J Korean Acad Prosthodont.
  • 2008 Jun;46(3):298-306.
STATEMENT OF PROBLEM: Effect of surface treatment of ceramic under loading does not appear to have been investigated. PURPOSE: The aim of this study was to investigate the effect of...
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The influence of abutment screw tightening timing and DLC coating of conical connection implant system

Kim KH, Koak JY, Heo SJ

  • KMID: 2118752
  • J Korean Acad Prosthodont.
  • 2008 Apr;46(2):209-216.
STATEMENT OF PROBLEM: It is difficult about assessing the loosening tendency of conical connection type implant after cyclic loading with diamond like carbon coating one-piece abutments, and also about...
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Influence of tungsten carbide/carbon coating of implant-abutment screw on screw loosening

Park JK, Jeong CM, Jeon YC, Yoon JH

  • KMID: 2118744
  • J Korean Acad Prosthodont.
  • 2008 Apr;46(2):137-147.
STATEMENT OF PROBLEM: Dental implant procedure has been recognized as a very effective treatment to rehabilitate fully or partially edentulous patients. However, mechanical failures such as screw loosening, screw...
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The assessment of abutment screw stability between the external and internal hexagonal joint under cyclic loading

Lee TS, Han JS, Yang JH, Lee JB, Kim SH

  • KMID: 2321746
  • J Korean Acad Prosthodont.
  • 2008 Dec;46(6):561-568.
STATEMENT OF PROBLEM: Currently, many implant systems are developed and divided into two types according to their joint connection: external or internal connection. Regardless of the connection type, screw loosening...
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An influence of abutment materials on a screw-loosening after cyclic loading

Lee TS, Han JS, Yang JH, Lee JB, Kim SH

  • KMID: 2195670
  • J Korean Acad Prosthodont.
  • 2007 Apr;45(2):240-249.
STATEMENT OF PROBLEM: A phenomenon of screw-loosening in implant abutment is frequently occurred in a single and multiple implant restoration. PURPOSE: This study was performed to evaluate an effect of abutment...
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The effect of internal implant-abutment connection and diameter on screw loosening

Ha CY, Kim CW, Lim YJ, Jang KS

  • KMID: 2000733
  • J Korean Acad Prosthodont.
  • 2005 Jun;43(3):379-392.
STATEMENT OF PROBLEM: One of the common problems of dental implant prosthesis is the loosening of the screw that connects each component, and this problem is more common in single...
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Biomechanical Testing of Anterior Cervical Spine Implants: Evaluation of Changes in Strength Characteristics and Metal Fatigue Resulting from Minimal Bending and Cyclic Loading

Kim SB, Bak KH, Cheong JH, Kim JM, Kim CH, Oh SH

  • KMID: 2189008
  • J Korean Neurosurg Soc.
  • 2005 Mar;37(3):217-222.
OBJECTIVE: To achieve optimal fit of implant, it is necessary to bend the implant during spine surgery. Bending procedure may decrease stiffness of plate especially made of titanium and stainless...
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The effect of abutment height on screw loosening in single implant-supported prostheses after dynamic cyclic loading

Kim NG, Kim YS, Kim CW, Jang KS, Lim YJ

  • KMID: 2000770
  • J Korean Acad Prosthodont.
  • 2004 Dec;42(6):664-670.
STATEMENT OF PROBLEM: One of the common problems of dental implant prosthesis is the loosening of the screw that connects each component, and this problem is more common in single...
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Biomechanical Effect of Cyclic Loading on the Reconstructed Posterior Cruciate Ligament: Comparison between Inlay and Transtibial Technique

Jung YB, Kim BS, Jin WJ, Yang DL, Lee SH

  • KMID: 2105887
  • J Korean Orthop Assoc.
  • 2002 Aug;37(4):531-536.
PURPOSE: To compare differences in the biomechanical characteristics of posterior cruciate ligament (PCL) reconstructed by the inlay and transtibial techniques. MATERIALS AND METHODS: PCL reconstruction was performed in 12 pairs of...
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Fracture strength and fracture mode of resin root analogs restored with various post and core materials

Lee BC, Han JS, Lee JB, Yang JH, Lee SH

  • KMID: 2195856
  • J Korean Acad Prosthodont.
  • 2002 Jun;40(3):287-295.
STATEMETN OF PROBLEM: Endodontically treated teeth frequently required posts and cores to pro-vide retention and resistance form for crowns. In spite of excellent mechanical properties of met-al post and core,...
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