EFFICACY OF TEMPORARY FIXED RETENTION FOLLOWING ...

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APPENDIX A. DESCRIPTIVE STATISTICS FOR ALL VARIABLES 151
Table A-1. Descriptive statistics at the start of treatment (sexes pooled). Fixed Retention Removable Retention Variable x sd sem n x sd sem n ADisc 1.66 3.25 0.391 69 1.92 2.52 0.256 97 MADisc 0.87 3.29 0.396 69 0.43 3.25 0.330 97 COS 2.20 0.75 0.090 69 2.18 0.94 0.095 97 MC 6.68 5.19 0.625 69 6.26 4.66 0.473 97 ASR 33.89 5.47 0.658 69 32.99 5.30 0.538 97 ISR 16.99 7.88 0.949 69 15.56 6.35 0.644 97 IAR 76.97 15.46 1.861 69 72.81 17.24 1.750 97 ASP 35.39 3.11 0.374 69 34.45 2.83 0.287 97 UMW 51.19 3.25 0.391 69 50.38 3.34 0.339 97 LMW 50.54 2.95 0.356 69 50.27 2.68 0.272 97 UCW 32.58 2.57 0.349 54 32.44 2.26 0.255 78 LCW 24.64 2.16 0.268 65 24.44 2.02 0.215 88 ISD 3.54 1.63 0.196 69 3.24 1.32 0.134 97 ASD 9.22 1.56 0.188 69 8.83 1.42 0.145 97 ID* 25.52 7.71 0.928 69 21.89 7.29 0.740 97 ASW 27.16 1.86 0.224 69 26.74 1.86 0.189 97 II 5.36 3.86 0.464 69 5.91 3.80 0.386 97 FMIA 60.29 6.04 0.727 69 60.18 6.81 0.691 97 FMA 26.70 5.87 0.707 69 27.02 5.69 0.577 97 Continued 152
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EFFICACY OF TEMPORARY FIXED RETENTI
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DEDICATION This thesis is dedicated
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ABSTRACT Instability of the occlusi
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CHAPTER 5. DISCUSSION .............
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LIST OF FIGURES Figure 3-1. All cas
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Figure 4-14. Box plot of the distri
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Joondeph and Riedel (1994, p 908) d
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Strang (1952, p 794) claimed that
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malocclusion must be maintained if
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e aimed at maintaining, in most ins
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three time intervals: during treatm
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mechanical treatment does not neces
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elation, the masticatory system wil
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exerted on the denture from the buc
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In summary, the variance in tongue
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Sinclair and Little (1983, p 114) a
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Study and 43 orthodontically treate
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and Sakols 1982; Vaden et al. 1997;
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years postretention. Årtun et al.
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adjustment, if necessary. This abil
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Duration of Retention The premise i
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The reduction in tooth structure of
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4. The most stable position of the
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CHAPTER 3. MATERIALS AND METHODS Sa
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The present sample consisted of the
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Figure 3-2. Illustration of how mol
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Figure 3-3. Illustration showing di
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Figure 3-5. Illustration showing mi
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Figure 3-6. Illustration showing an
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Figure 3-8. Illustration showing in
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34. LR3 cusp tip point. 35. Right d
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Figure 3-10. Illustration showing o
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Figure 3-11. Illustration of Inciso
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3. Go, Gonion (anatomic): The most
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Figure 3-13. Depiction of the angle
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Figure 3-15. Illustration of the me
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Figure 3-17. Illustration of the me
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Figure 3-19. Illustration of the an
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Figure 3-21. Illustration of the up
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Figure 3-22. Illustration of the to
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Figure 3-24. Illustration of the po
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the “older” Tweed force system,
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The null hypothesis is: There was n
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Figure 4-1. Distribution of the 166
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occlusal issues are tolerated by bo
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40 35 30 FMA (degrees) 25 20 15 10
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Figure 4-4. Plot of the average val
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larger ANB at the recall examinatio
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21 19 Total Chin (mm) 17 15 13 11 9
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Figure 4-8. Box plot of the distrib
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which a Class I relationship was no
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Figure 4-11. Plot of mean Curve of
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Figure 4-13. Box plot of the distri
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Table A-4 addresses the question of
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Figure 4-16. Bar chart of the avera
Page 111 and 112: only sample changed significantly m
Page 113 and 114: 3 2 1 0 Canonical Variate 2 -1 -2 R
Page 115 and 116: 8 Anterior Discrepancy (ADisc) 6 4
Page 117 and 118: 40 Incisor Aspect Ratio (IAR) 30 20
Page 119 and 120: 1.5 Incisor Segment Depth (ISD) 1 0
Page 121 and 122: more stable (i.e., the mean change
Page 123 and 124: Molar Correction (MC) 10 8 6 4 2 0
Page 125 and 126: Anterior Segment Width (ASW) 1 0 -1
Page 127 and 128: final vertical positions. This phas
Page 129 and 130: decreased in both arches during the
Page 131 and 132: Figure 5-1. Plot of average Incisor
Page 133 and 134: Based on the present results, the u
Page 135 and 136: these variables indicate more anter
Page 137 and 138: and the hassle associated with plac
Page 139 and 140: Figure 5-2. Scatter-plot graph refl
Page 141 and 142: stability?” and “for how long?
Page 143 and 144: About two-thirds (64%) of the corre
Page 145 and 146: Baume LJ, Horowitz HS, Summers CJ,
Page 147 and 148: Case CS. Techniques and principles
Page 149 and 150: Glenn G, Sinclair PM, Alexander RG.
Page 151 and 152: Joondeph DR. Retention and relapse.
Page 153 and 154: Littlewood SJ, Millett DT, Doubleda
Page 155 and 156: Ormiston JP, Huang GJ, Little RM, D
Page 157 and 158: Rosenstein SW, Jacobson BN. Retenti
Page 159 and 160: Steadman SR. A philosophy and pract
Page 161: Zachrisson BU, Büyükyilmaz T. Bon
Page 165 and 166: Table A-2. Descriptive statistics a
Page 167 and 168: Table A-3. Descriptive statistics f
Page 173 and 174: APPENDIX B. ANCOVA TESTS OF THE COM
Page 175 and 176: Table B-1. Continued. Sex Retention
Page 185 and 186: Table C-1. Results of ANCOVA tests
Page 197 and 198: Table D-1. Descriptive statistics,
Page 203 and 204: Table E-1. Two-way ANOVA tests eval
Page 205: VITA Mark Owens was born on January
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