Marginal Integrity of Different CAD/CAM Monolithic Ceramic Crowns with Vertical and Horizontal Finish Line Preparations | ||||
| Egyptian Dental Journal | ||||
| Volume 70, Issue 2 - Serial Number 4, April 2024, Page 1761-1759 PDF (1.15 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2024.269678.2936 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Shereen Kotb Salem ; Rasha Sayed Asaad 
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| Associate Professor, Fixed Prosthodontics, Faculty of Dentistry, October 6 University, Giza, Egypt | ||||
| Abstract | ||||
| Purpose: Evaluate the marginal fit of different monolithic ceramic crowns for prepared teeth with vertical and horizontal finish lines. Materials & Methods: Sixty monolithic ceramic crowns were fabricated, divided equally into two groups: vertical finish line preparation design (VFL) and horizontal finish line preparation design (HFL). Each group was divided according to the utilized ceramic material into three subgroups (n=10). Subgroup {CZI}: Zirconia (Ceramill Zolid), subgroup {VE}: Hybrid ceramic (Vita Enamic) and subgroup {CD}: Zirconia reinforced Lithium Silicate (Celtra Duo). Vertical gaps of all ceramic crowns were measured at 20 predetermined points without cementation. Results: All marginal gap results lied within the clinically acceptable range. {VFL} Group: {VE}subgroup showed the lowest mean marginal gap followed by {CZI} then {CD}subgroups with statistically significant difference between {VE}&{CD}subgroups. {CZI} showed a non-significant difference with and {VE} and {CD} subgroups. {HFL} Group: {VE}subgroup showed the lowest mean marginal gap value followed by {CD} then {CZI}with a statistically significant difference between the three subgroups. All {VFL}, subgroups showed significantly higher marginal gaps compared to their corresponding subgroups in the {HFL} group. Conclusions: Both finish line preparations offered clinically acceptable marginal gaps for the 3 ceramic materials used, although each material presented significantly different marginal gaps with both preparations. | ||||
| Keywords | ||||
| KEY WORDS: Marginal integrity; Vertical preparation; Horizontal preparation; Ceramic crowns | ||||
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