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

Not Applicable

Not yet recruiting

• Conditions: Mutilated Teeth; Endodontically Treated Teeth

• Registration Number: NCT06539546
• Lead Sponsor: Cairo University

Brief 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.

Study Timeline

• Study First Submitted: 2024-07-29
• Status Verified: 2024-08
• Study First Submitted QC: 2024-08-01
• Study First Posted: 2024-08-06
• Last Update Submitted: 2024-08-07
• Last Update Posted: 2024-08-09
• Study Start: 2024-09-01
• Primary Completion: 2025-09-01
• Study Completion: 2025-09-01

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 22

Inclusion Criteria

Not provided

Exclusion Criteria

1. Patients in the growth stage with partially erupted teeth.
2. Patients with poor oral hygiene and motivation.
3. Patients with psychiatric problems or unrealistic expectations (patient that has phobia from dental treatments or needle bunch).
4. Patients suffer from parafunctional habits.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Color difference	immediate after cementation	By Intraoral Spectrophotometer, color difference between the restoration and the adjacent or contralateral natural tooth will be measured by the unit (ΔE), (ΔE) will be measured for each sample.

Secondary Outcome Measures

Name	Time	Method
Patient satisfaction	immediate after cementation	By Visual Analogue Scale, with score range from 1 to 10 , where 1 is the worst (lowest satisfaction) and 10 is the best (highest satisfaction).