5축 밀링으로 가공한 PMMA 3본 브릿지의 내면 적합도 평가

다국어 초록 (Multilingual Abstract)

Purpose: The purpose of this study was to assess the internal fitness of the PMMA 3-unit bridge that was fabricated with 5-axis milling machine and to verify the clinically allowable values. Methods: For fabrication of the crown bridge in this study, 25-27 abutment teeth were used. The prepare abutment teeth were scanned with a scanner and 3-unit bridge was designed by using design software. Upon the completion of the design, the 3-unit bridge was fabricated by using a PMMA block with 5-axis milling machine. The internal surface of the fabricated 3-unit bridge was scanned by using a scanner and the difference between the 3-unit bridge and the abutment teeth was assessed by merging them together. Results: RMS±SD values for PRE group, MOL group, and BRI group were 51.2±18.2, 44.8±10.0, and 52.1±8.3㎛, respectively. The mean of the PRE group was bigger than that of the MOL and BRI group; however, statistically significant difference was not found (p>0.05). Conclusion: The PMMA 3-unit bridge that was fabricated with 5-axis milling machine presented stable internal values for each crown and overall internal values were within the range of clinically allowable values.

목차 (Table of Contents)

• [Abstract]
• Ⅰ. 서론
• Ⅱ. 연구 방법
• 1. 지대치 제작 및 스캔
• 2. 디자인 및 밀링
• 3. 3차원 측정
• 4. 통계분석
• Ⅲ. 결과
• Ⅳ. 고 찰
• Ⅴ. 결론
• REFERENCES

참고문헌 (Reference)

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