NCT06539546

Shade Matching and Patient Satisfaction of Yttria Stabilized Multilayered Zirconia and Lithium Disilicate Restorations

Shade Matching and Patient Satisfaction of Yttria Stabilized Multilayered Zirconia and Lithium Disilicate Restorations: a Randomized Controlled Clinical Trial

• Status: Not Yet Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 22 (estimated)
• Sponsor: Cairo University · Academic / Other
• Sex: All
• Age: 20 Years – 60 Years
• Healthy volunteers: Not accepted

Summary

The aim of the study is to determine whether Yttria stabilized multilayered zirconia restorations will differ from lithium disilicate restorations in shade matching and patient satisfaction in patients requiring full coverage restorations.

Detailed description

Steps in short: Single tooth in the esthetic zone requiring full coverage crown is prepared to receive an all-ceramic crown, The restorations will be divided into two groups: I: Teeth receiving restorations fabricated from Lithium disilicate II: Teeth receiving restorations fabricated from yttria stabilized multilayered zirconia. Shade will be measured using intraoral spectrophotometer and evaluated. The colour difference (ΔE) will be calculated for each sample using the following equation: ΔE =\[(ΔL) ²+(Δa) ² + (Δb) ²\] ½, ΔE (perceptibility threshold) will be evaluated for each group. Participant timeline the patient will be treated in visits designated as follows: Visit 1: Preoperative records, face-to-face adherence reminder session, clinical, radiographic for examination, intraoral photographs and primary impression (Alginate impression) diagnostic cast construction. Visit 2: teeth preparation and secondary impression using addition silicone rubber base material and temporary restoration. Visit 3: placement and permanent cementation of the final restoration using resin cement.

Conditions

• Mutilated Teeth
• Endodontically Treated Teeth

Interventions

Type	Name	Description
OTHER	Yttria stabilized multilayered (YML) zirconia restorations	Yttria stabilized multilayered zirconia restorations were claimed to have high strength and esthetics at the same time but no clinical studies were conducted yet to prove its high esthetic properties
OTHER	Lithium disilicate restorations	Lithium disilicate reinforced glass ceramics are considered a gold standard for monolithic esthetic restorations.

Timeline

• Start date: 2024-09-01
• Primary completion: 2025-09-01
• Completion: 2025-09-01
• First posted: 2024-08-06
• Last updated: 2024-08-09