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Volume 24 , Issue 4
July/August 2011

Pages 379–381

Marginal Integrity of Turkom-Cera Compared to Other All-Ceramic Materials: Effect of Finish Line

Bandar M.A. AL-Makramani, BDS, HDD, MDSc/Abdul A.A. Razak, BDS, MSc, PhD/Mohamed I. Abu-Hassan, BDS, MDSc, PhD/Eshamsul Sulaiman, BDS, MClinDent/Lui Joo Loon, BDS, MSc/Noor Azlin Yahya, BDS, MDSc

PMID: 21716978

The aim of this study was to evaluate the marginal adaptation of Turkom-Cera all-ceramic crowns compared to In-Ceram and Procera AllCeram systems. The influence of finish line design (chamfer or shoulder) on the marginal adaptation of Turkom-Cera all-ceramic crowns was also investigated. Thirty human premolars were prepared with chamfer margins and assigned to either the Turkom-Cera, In-Ceram, or Procera system group. In addition, 10 premolars were prepared with rounded shoulder finish lines and assigned to an additional Turkom-Cera group. Ceramic copings (0.6-mm thick) were fabricated for each group following the manufacturers’ instructions. The copings were seated on abutments using a special holding device that facilitated uniform loading, and marginal adaptation was assessed using a stereomicroscope. Data were analyzed using analysis of variance, the Tukey HSD post hoc test, and an independent samples t test. There was a statistically significant difference regarding marginal adaptation among the three all-ceramic systems (P < .05). There were no significant differences in the mean marginal discrepancies of Turkom-Cera crowns among chamfer and shoulder finish line groups (P > .05). Within the limitations of this study, the marginal discrepancies were all within the clinically acceptable standard. Int J Prosthodont 2011;24:379–381.

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