한국인의 상악 유치악 치열 및 무치악 치조제에 관한 삼차원적 연구
Three-dimensional analysis of the normal dentition and edentulous maxilla of Koreans
김형섭, 신상완,
소속 상세정보
김형섭 ( Kim Hyeong-Seop ) - 고려대학교 의과대학원 의학과
신상완 ( Shin Sang-Wan ) - 고려대학교 의과대학원 의학과
KMID : 0362420050430020191
Abstract
Statement of problem: In Korea, the preliminary impression trays for dental and edentulous maxillae are manufactured on the base of the statistical value of Westerners. There had been less study on the dental and edentulous arches of Koreans.
Purpose: The purpose of this study was to evaluate an average dental cast, preliminary impression trays, three-dimensional relation of dental and edentulous maxilla of Koreans.
Materials & Methods: The subjects for this study were 173 dental casts of maxilla (dental: 52, edentulous: 146) with ages 18~60 years old. Each of the master casts was measured 69 measuring points on the dental cast of maxilla, and 46 measuring points on the edentulous cast of maxilla with three-dimensional digital measuring machine. Each measuring points were analysed and were overlapped, that three dimensional dental graphic manufactured by CAD/CAM system.
Results: 1. A standard of distribution to alveolar bone were width between left and right buccal border lines of the standard 3/4 line. The mean value of dental and edentulous casts were 67.27mm, 63.49mm, respectively. 2. Morphological classification of dental casts were divided into three groups of V-shape, O-shape, U-shape, that proportion of distribution were 17%, 16%, 67%,respectively. Dimensional classification of the dental casts were divided into five groups of less than 63mm, 63 up to 65mm, 65 up to 67mm, 67 up to 69mm, more than 69mm, respectively. 3. Morphological classification of edentulous casts were divided into three groups of V-shape, O-shape, U-shape, that proportion of distribution were 18%, 17%, 65%, respectively. Dimensional classification of the edentulous casts were divided into five groups of less than 57mm, 57 up to 61mm, 61 up to 65mm, 65 up to 69mm, more than 69mm, respectively. 4. Mean dental and edentulous cast of maxilla were overlapped, the proportion of bone r
Conclusion: It obtains information of preliminary impression trays for dental and edentulous maxilla of Koreans.
키워드
Three-dimensional analysis;CAD/CAM system;Five groups;Impression tray
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