title page
Contents
Abstract 7
I. Introduction 9
II. Materials and methods 10
A. Participants 10
B. Appliance and treatment sequence 12
C. Cephalometric analysis 15
1. Modified McNamara analysis 15
2. Pitchfork analysis 17
D. Statistical analysis 22
III. Results 23
A. Modified McNamara analysis 23
1. Skeletal and dental changes 23
B. Pitchfork analysis 25
1. Skeletal changes 25
2. Dental changes 25
3. Total molar relationship correction 25
IV. Discussion 29
V. Conclusion 36
References 37
논문개요 44
Table 1. Chronologie age, dental developmental stage and CVM stage of samples 11
Table 2. Changes of cephalometric measurements after TTBA therapy 24
Table 3. Descriptive statistics for pitchfork analysis 27
Fig 1. Tandem traction bow appliance(TTBA). 13
Fig 2. TTBA in situ. 14
Fig 3. The reference planes and four measurements. 16
Fig 4. Measurements of MAX and ABCH with maxillary regional superimposition. 19
Fig 5. Maxillary tooth movement with maxillary regional superimposition. 20
Fig 6. Mandibular tooth movement with D-point-perpendicular registration. 20
Fig 7. Pitchfork diagram. 21
Fig 8. Total molar relationship correction after TTBA therapy. 28