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Effects of mechanical stress and interleukin-1beta on collagenase and TIMP-1 expression in human periodontal ligament fibroblasts

Kim ML, Bae C

  • KMID: 1923880
  • Korean J Orthod.
  • 1998 Feb;28(1):165-174.
The turnover of collagen is controlled by the balance between collagen synthesis and degradation. The production of collagenase (matrix rnetalloproteinase 1) and its inhibitor, tissue inhibitor of matrix metalloproteinase-1(TIMP-1) are...
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The effect of a static magnetic field on the bone nodule formation of MC3T3-E1 cells

Kim KD, Kwon OW, Ryu HM

  • KMID: 1923879
  • Korean J Orthod.
  • 1998 Feb;28(1):155-163.
To evaluate the effect of a static magnetic field on the bone producing potential of MC3T3 El cells, the alkaline phosphatase activity was measured after the cells having been cultured...
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The effects of PDGF and LPS on the viabillty of human periodontal ligament cells

Heo J, Lim JH, Kim SC

  • KMID: 1923878
  • Korean J Orthod.
  • 1998 Feb;28(1):143-153.
Platelet-derived growth factor(PDGF) and lipopolysaccharide(LPS) may be the important regualtors of bone metabolism. Exogenous PDGF is recognized to have a stimulating effect on bone resorption in organ culture, but to...
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The effect of dental protrusion on the width of attached gingiva

Hwang HS, Kim JC, Kim JM

  • KMID: 1923877
  • Korean J Orthod.
  • 1998 Feb;28(1):135-142.
The purpose of the present study was to evaluate the effect of incisor protrusion on the mucogingival parameters including the width of attached gingiva. Thirty-seven young adults with lower anterior...
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The frictional resistance of tin ion-plated Co-Cr orthodontic wire

Lee HK, Kwon OW, Kim KH

  • KMID: 1923876
  • Korean J Orthod.
  • 1998 Feb;28(1):123-133.
The effectiveness of TiN ion-plating was examined with TiN ion-plated Co-Cr wires(016", 016"X.022") on three different types of bracket(TiN ion-plated metal bracket, ceramic bracket and plastic bracket). Maximum static frictional...
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A study of condylar positional changes before & after stabilization splint therapy

Lee SK, Yoon YJ, Kim KW

  • KMID: 1923875
  • Korean J Orthod.
  • 1998 Feb;28(1):113-122.
Stabilization splint therapy precedes orthodontic intervention to enable the operator to find a "true" centric(which is stable and comfortable); to test the patient's response to a change in the occlusion,...
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The positioning errors in bonding lingual brackets

Choi JK, Hwang HS, Kim JC

  • KMID: 1923874
  • Korean J Orthod.
  • 1998 Feb;28(1):99-111.
The purpose of this study was to evaluate the positioning errors according to the method of bonding lingual brackets. Dental models of twenty orthodontic patients with malocclusion were selected for...
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The early effects of sodium fluoride on the rapid palatal expansion in growing dogs

Lee HK, Chung KR

  • KMID: 1923873
  • Korean J Orthod.
  • 1998 Feb;28(1):85-97.
The purpose of this study was to observe the effects of sodium fluoride on the bony iepair and regeneration processes after the rapid palatal expansion in the growing dogs. Eighteen...
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A study on the errors in the cephalometric measurements

Na KC, Yoon YJ, Kim KW

  • KMID: 1923872
  • Korean J Orthod.
  • 1998 Feb;28(1):75-83.
This study was done to recognize the importance of errors in measurements of cephalometric radiograph and to find the anatomical structures those need special care to select as a reference...
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Three dimensional finite element analysis for reaction to molar uprighting spring

Choe YK, Kim TW, Suhr CH

  • KMID: 1923871
  • Korean J Orthod.
  • 1998 Feb;28(1):61-74.
The purpose of this study was to investigate the stress distribution and tooth displacement at the initial phase produced by 5 types of molar uprighting springs using finite element method....
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A study on the change of Streptococcus mutans in saliva by Cariescreen after use of 0.05% NaF in orthodontic patients

Hwang CJ, Lim SA, Kim KY

  • KMID: 1923870
  • Korean J Orthod.
  • 1998 Feb;28(1):51-59.
The purpose of this study was to evaluate the effectiveness of gargling solution with 0.05% NaF and 10% Xylitol in orthodontic patients with fixed appliance. The sample consisted of 30...
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Stress distribution in esthetic orthodontic brackets: An analysis using the finite element method

Lee WY, Ju SA, Park YC, Park MK, Sohn HB, Jeong SD

  • KMID: 1923869
  • Korean J Orthod.
  • 1998 Feb;28(1):43-49.
The aim of this study were to measure and compare the stress level on three type brackets and each other material (stainless steel, ceramic) with tipping and torquing forces by...
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An experimental study on the dynamic tooth moving effects of two precision lingual archs(PLA) for correction of posterior scissor bite by the calorific machine

Chun YS, Row J, Suh MS, Park IK

  • KMID: 1923868
  • Korean J Orthod.
  • 1998 Feb;28(1):29-41.
Despite orthodontic treatment(tooth moving) is dynamic act, many orthodontists have used mainly static evaluation method for evaluating effectiveness of the orthodontic appliances. They want to find which is better appliance,...
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Growth and develoment of arch form

Sohn BW, Baik HS

  • KMID: 1923867
  • Korean J Orthod.
  • 1998 Feb;28(1):17-27.
Study on growth change of dental arch is considered to both an important data in orthodontic diagonsis and treatment planning as well as analysis of treatment results ; also, arch...
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A study on the extracellular matrix in the artificially created cleft lip wound healing of rabbit fetuses

Yang WS, Baek SH

  • KMID: 1923866
  • Korean J Orthod.
  • 1998 Feb;28(1):1-15.
Adult wound healing is accompanied with inflammation and eventual scar formation, whereas fetal wounds heal rapidly by mesenchymal proliferation without significant inflammatory cell participation and with minimal or no scar...
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