EFFICACY OF TEMPORARY FIXED RETENTION FOLLOWING ...
EFFICACY OF TEMPORARY FIXED RETENTION FOLLOWING ... EFFICACY OF TEMPORARY FIXED RETENTION FOLLOWING ...
Differences among the three extraction patterns (Table E-1) were few. Only 3 variables exhibited significance, namely molar correction (P = ~ 0.04), maxillary intercanine width, which exhibited borderline significance (P = 0.045), and anterior segment width (P = 0.014). Figures 4-26 through 4-28 are graphs of the group differences for these 3 variables. Less molar correction (Figure 4-26) occurred in the nonextraction group than in either of the extraction groups. Extraction of 4-4/5-5 resulted in the largest of molar correction of the three groups. The greatest change in maxillary intercanine width (Figure 4-27) was in the 4-4/5-5 extraction group, followed by the nonextraction group. The least amount of change occurred in the 4-4/4-4 extraction group. Figure 4-28 is a graph of the changes in anterior segment width. The least amount of change was in the 4-4/4-4 extraction group, followed by the 4-4/5-5 extraction group, and then the nonextraction group. 111
Molar Correction (MC) 10 8 6 4 2 0 -2 -4 -6 -8 -10 1 2 4 Extraction Pattern Figure 4-26. Graphic display of Molar Correction (MC) depending on extraction pattern. Extraction codes are (1) nonextraction, (2) 4-4/4-4, and (4) 4-4/5-5. 112
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- Page 141 and 142: stability?” and “for how long?
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- Page 147 and 148: Case CS. Techniques and principles
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- Page 151 and 152: Joondeph DR. Retention and relapse.
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- Page 155 and 156: Ormiston JP, Huang GJ, Little RM, D
- Page 157 and 158: Rosenstein SW, Jacobson BN. Retenti
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Differences among the three extraction patterns (Table E-1) were few.<br />
Only 3 variables exhibited significance, namely molar correction (P = ~ 0.04),<br />
maxillary intercanine width, which exhibited borderline significance (P = 0.045),<br />
and anterior segment width (P = 0.014).<br />
Figures 4-26 through 4-28 are graphs of the group differences for<br />
these 3 variables. Less molar correction (Figure 4-26) occurred in the<br />
nonextraction group than in either of the extraction groups. Extraction of<br />
4-4/5-5 resulted in the largest of molar correction of the three groups.<br />
The greatest change in maxillary intercanine width (Figure 4-27) was in<br />
the 4-4/5-5 extraction group, followed by the nonextraction group. The least<br />
amount of change occurred in the 4-4/4-4 extraction group.<br />
Figure 4-28 is a graph of the changes in anterior segment width. The least<br />
amount of change was in the 4-4/4-4 extraction group, followed by the 4-4/5-5<br />
extraction group, and then the nonextraction group.<br />
111
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