EFFICACY OF TEMPORARY FIXED RETENTION FOLLOWING ...

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Table C-10. Results of ANCOVA tests of whether the amount of relapse depends on the kind of retention; dependent variable is Mandibular Intermolar Width (LMW), with time-out-of-treatment as a covariate. Source df Sum Squares F Ratio P Value Retention 1 0.41 0.37 0.5463 Sex 1 8.66 7.73 0.0061 Time 1 1.33 1.19 0.2770 Retention-x-Sex 1 2.42 2.16 0.1438 Retention-x-Time 1 0.31 0.28 0.5989 Sex-x-Time 1 0.07 0.06 0.8094 Retention-x-Sex-x-Time 1 0.01 0.01 0.9342 Table C-11. Results of ANCOVA tests of whether the amount of relapse depends on the kind of retention; dependent variable is Maxillary Intercanine Width (UCW), with time-out-of-treatment as a covariate. Source df Sum Squares F Ratio P Value Retention 1 0.00 0.00 0.9874 Sex 1 13.18 10.37 0.0016 Time 1 1.52 1.20 0.2758 Retention-x-Sex 1 0.22 0.17 0.6810 Retention-x-Time 1 0.97 0.77 0.3827 Sex-x-Time 1 1.06 0.83 0.3633 Retention-x-Sex-x-Time 1 0.19 0.15 0.7022 Table C-12. Results of ANCOVA tests of whether the amount of relapse depends on the kind of retention; dependent variable is Mandibular Intercanine Width (LCW), with time-out-of-treatment as a covariate. Source df Sum Squares F Ratio P Value Retention 1 1.45 1.37 0.2434 Sex 1 6.27 5.93 0.0160 Time 1 0.00 0.00 0.9733 Retention-x-Sex 1 0.57 0.54 0.4635 Retention-x-Time 1 0.32 0.31 0.5804 Sex-x-Time 1 0.36 0.34 0.5581 Retention-x-Sex-x-Time 1 0.03 0.03 0.8648 177
Table C-13. Results of ANCOVA tests of whether the amount of relapse depends on the kind of retention; dependent variable is Incisor Segment Depth (ISD), with time-out-of-treatment as a covariate. Source df Sum Squares F Ratio P Value Retention 1 3.93 6.23 0.0136 Sex 1 0.00 0.00 0.9941 Time 1 0.72 1.15 0.2860 Retention-x-Sex 1 1.01 1.60 0.2076 Retention-x-Time 1 3.77 5.97 0.0156 Sex-x-Time 1 1.74 2.76 0.0985 Retention-x-Sex-x-Time 1 1.80 2.85 0.0933 Table C-14. Results of ANCOVA tests of whether the amount of relapse depends on the kind of retention; dependent variable is Anterior Segment Depth (ASD), with time-out-of-treatment as a covariate. Source df Sum Squares F Ratio P Value Retention 1 1.27 2.10 0.1496 Sex 1 0.40 0.67 0.4157 Time 1 0.00 0.00 0.9848 Retention-x-Sex 1 0.98 1.62 0.2049 Retention-x-Time 1 2.49 4.10 0.0447 Sex-x-Time 1 1.54 2.54 0.1132 Retention-x-Sex-x-Time 1 0.09 0.14 0.7072 Table C-15. Results of ANCOVA tests of whether the amount of relapse depends on the kind of retention; dependent variable is Incisor Depth (ID), with time-outof-treatment as a covariate. Source df Sum Squares F Ratio P Value Retention 1 0.00 0.00 0.9946 Sex 1 0.58 0.19 0.6615 Time 1 0.00 0.00 0.9705 Retention-x-Sex 1 1.23 0.41 0.5222 Retention-x-Time 1 3.43 1.14 0.2868 Sex-x-Time 1 4.54 1.51 0.2206 Retention-x-Sex-x-Time 1 0.06 0.02 0.8879 178
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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
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only sample changed significantly m
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3 2 1 0 Canonical Variate 2 -1 -2 R
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8 Anterior Discrepancy (ADisc) 6 4
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40 Incisor Aspect Ratio (IAR) 30 20
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1.5 Incisor Segment Depth (ISD) 1 0
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more stable (i.e., the mean change
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Molar Correction (MC) 10 8 6 4 2 0
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Anterior Segment Width (ASW) 1 0 -1
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final vertical positions. This phas
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decreased in both arches during the
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Figure 5-1. Plot of average Incisor
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Based on the present results, the u
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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 and 162: Zachrisson BU, Büyükyilmaz T. Bon
Page 163 and 164: Table A-1. Descriptive statistics a
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 187: Table C-7. 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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EFFICACY OF TEMPORARY FIXED RETENTION FOLLOWING ...

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