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使用口内数字印模的CAD/CAM全瓷高嵌体内部间隙的临床可接受性

Clinical Acceptability of the Internal Gap of CAD/CAM PD-AG Crowns Using Intraoral Digital Impressions.

作者信息

Kim Tae-Gyung, Kim Sungtae, Choi Hyunmin, Lee Jae-Hoon, Kim Jae-Hong, Moon Hong-Seok

机构信息

Department of Prosthodontics, Yonsei University, College of Dentistry, 50 Yonseo-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.

Department of Periodontology, Dental Research Institute, Seoul National University, School of Dentistry, 101 Daehak-ro, Jongno-gu, Seoul 110-768, Republic of Korea.

出版信息

Biomed Res Int. 2016;2016:7065454. doi: 10.1155/2016/7065454. Epub 2016 Nov 28.

DOI:10.1155/2016/7065454
PMID:28018914
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5149597/
Abstract

The purpose of this study was to compare the internal gap between CAD/CAM palladium-silver crowns and cast gold crowns generated from intraoral digital versus conventional impressions and to determine the clinical acceptability. Nickel-chrome master dies were made from the prepared resin tooth with the conventional impression method ( = 40). For ICC (Intraoral, CAD/CAM) group, 10 intraoral digital impressions were made, and 10 CAD/CAM crowns of a PD-AG (palladium-silver) machinable alloy were generated. For IC (Intraoral, Cast) group, 10 gold crowns were cast from ten intraoral digital impressions. For CCC (Conventional, CAD/CAM) group, 10 CAD/CAM PD-AG crowns were made using the conventional impression method. For CC (Conventional, Cast) group, 10 gold crowns were fabricated from 10 conventional impressions. One hundred magnifications of the internal gaps of each crown were measured at 50 points with an optical microscope and these values were statistically analyzed using a two-way analysis of variance ( = 0.05). The internal gap of the intraoral digital impression group was significantly larger than in the conventional impression group ( < 0.05). No significant difference was observed between the CAD/CAM group and the cast group ( > 0.05). Within the limitations of this study, crowns from intraoral digital impressions showed larger internal gap values than crowns from conventional impressions.

摘要

本研究的目的是比较由口内数字化印模与传统印模制作的CAD/CAM钯银冠和铸造金冠之间的内部间隙，并确定其临床可接受性。采用传统印模法由预备好的树脂牙制作镍铬母模（ = 40）。对于ICC（口内，CAD/CAM）组，制作10张口内数字化印模，并制作10个由可加工的PD-AG（钯银）合金制成的CAD/CAM冠。对于IC（口内，铸造）组，从10张口内数字化印模铸造10个金冠。对于CCC（传统，CAD/CAM）组，采用传统印模法制作10个CAD/CAM PD-AG冠。对于CC（传统，铸造）组，从10个传统印模制作10个金冠。用光学显微镜在50个点测量每个冠的内部间隙的100倍放大倍数，并使用双向方差分析（ = 0.05）对这些值进行统计分析。口内数字化印模组的内部间隙明显大于传统印模组（ < 0.05）。CAD/CAM组和铸造组之间未观察到显著差异（ > 0.05）。在本研究的局限性内，口内数字化印模制作的冠比传统印模制作的冠显示出更大的内部间隙值。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b88/5149597/aa9399bf8123/BMRI2016-7065454.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b88/5149597/7e76077fa281/BMRI2016-7065454.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b88/5149597/4db68dde5b5f/BMRI2016-7065454.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b88/5149597/9889395ef9eb/BMRI2016-7065454.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b88/5149597/aa9399bf8123/BMRI2016-7065454.004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b88/5149597/7e76077fa281/BMRI2016-7065454.001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b88/5149597/4db68dde5b5f/BMRI2016-7065454.002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b88/5149597/9889395ef9eb/BMRI2016-7065454.003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b88/5149597/aa9399bf8123/BMRI2016-7065454.004.jpg

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