치과용 콘빔전산화단층영상에서 치조골과 치아의 협설경사 비교

Abstract

ABSTRACT

Comparison of the buccolingual inclination in alveolar bone and tooth using Dental CBCT

Sung Eun Kim D.D.S., M.S.D. Director Jae Duk Kim Ph.D. Dept. of Dental Engineering Graduate School, Chosun University

Purpose: It is important to determine the bucco-lingual inclination of implants on radiographs before implant surgery. This purpose of this study was to compare the buccolingual inclination in alveolar bone and the tooth using dental cone beam CT and to prepare the standard for the buccolingual inclination of implant. Methods: Axial, panoramic, and buccolingually sectioned images of 80 implant cases with stent including straight marker using CB MercurayTM(Hitachi, Japan) were evaluated. The comparison of the buccolingual inclination of remained alveolar bone with those of tooth and marker on buccolingually sectioned views was performed statistically. Results: 1. The buccolingual inclination of remained alveolar bone and tooth was average 82.8±4.6°and 85.8±4.7°(p<0.05, r=0.96) at the 1st molar area and average 76.4±1.7° and 82.7±1.7° respectively(p>0.05, r=0.12) at the 2nd premolar area in upper jaw. 2. The buccolingual inclination of remained alveolar bone and tooth was average 81.3±8.3°and 87.5±6.3°(p>0.05, r=0.85) at the lower 2nd premolar area and average 94.3±6.6° and 93.3±7.2° respectively(p>0.05, r=0.91) at the 1st molar area in lower jaw. 3. The inclinations of markers were very different from those of remained bone at the most of areas except the upper 2nd premolar area(r=0.79). Conclusions: It is recommended dental CBCT analysis for individual for determining the buccolingual inclination of dental implant, because there is the difference between the buccolingual inclination of remained alveolar bone and tooth in average.