Title Page
Contents
Abstract 7
I. Introduction 9
II. Materials and Methods 12
A. Patient selection 12
B. Assessment of sinus membrane thickness 15
C. Assessment of sinus conditions 18
D. Statistics 19
III. Results 20
A. Patient factors associated with sinus conditions 20
B. Evaluation of complications according to sinus conditions 24
C. Distribution of changes of sinus membrane thickness 26
a) Changes of sinus conditions after surgery 26
b) Changes of sinus membrane thickness in normal sinus membrane group after surgery 28
IV. Discussion 30
V. Conclusion 34
References 35
국문 초록 43
Table 1. Associations between sinus conditions and patient factors(n=156, implants) 22
Table 2. Complications according to sinus conditions(n=156, implants) 25
Table 3. Distribution of changes of sinus conditions(n=156, implants) 27
Figure 1. Flow chart of patient selection. 14
Figure 2. Measurements of sinus membrane thickness 16
Figure 3. Changes of sinus membrane thickness in normal sinus membrane group(n=83, implants) 29