Evaluation of Internal Adaptability of Different Core Materials (an in Vitro Study)

Al–Rafidain Dental Journal

Qasim Abdul-Kareem¹ 

关键词: Marginal fit;   

DOI  :  

学科分类：口腔科学

来源: Mosul University * College of Dentistry

【 摘 要 】

Aims: The aim of This study was to comparethe marginal and internal adaptation of cores which are fabricated of different materials and systems. Methods: In this experimental study, one Ivorine maxillary right first premolar (A -3 Z; Frasaco, Tettnang, Germany)was prepared for full coverage of zirconium,Nickle chromium and ceramic cores. The tooth was prepared with 1 mm rounded shoulder and 2-5 degrees tapering. Nickle chromium die was prepared for full coverage of upper first premolar,and duplicated to produce fifteen resin stone dies.The specimens were devided in to three groups (n=5). Cores werefabricated using NiCr, Empress ceramic, manual Zirconia frame works respectively. Internal space replica technique was used to evaluate the marginal andinternal adaptation of the coresusing Fit and Bite checker silicone material. The resulted replica of each core was sectioned and the thickness of the black and white silicone layer was measured at marginal and internalpoints.Data was calculated and compared statistically using Kruskal_Wallis test at p

【 授权许可】

CC BY