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

Cairo University (CU)

Status: Not yet enrolling

Conditions: Mutilated Teeth; Endodontically Treated Teeth

Treatments: Other: Lithium disilicate restorations; Other: Yttria stabilized multilayered (YML) zirconia restorations

Study type: Interventional

Funder types: Other

Identifiers

NCT06539546

PROSF 3.3.6

Details and patient eligibility

About

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.

Full 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.

Enrollment: 22 estimated patients

Sex: All

Ages: 20 to 60 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Age range of the patients from 20-60 years old; able to read and sign the informed consent document, illiterate patient will be avoided.
2. Patients able physically and psychologically to tolerate conventional restorative procedures.
3. Patients with no active periodontal or pulpal diseases, having teeth with good restorations.
4. Patients with teeth problems indicated for full coverage restoration (coronal fracture where partial coverage would lack retention, malposed or malformed teeth).
5. Patients with root canal treated teeth requiring full coverage restorations.
6. Patients willing to return for follow-up examinations and evaluation.

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.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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22 participants in 2 patient groups

Yttria stabilized multilayered (YML) zirconia restorations

Experimental group

Description:

Full coverage Yttria stabilized multilayered (YML) zirconia restorations will be fabricated on a tooth requiring full coverage in the esthetic zone.

Treatment:

Other: Yttria stabilized multilayered (YML) zirconia restorations

Lithium disilicate restorations

Experimental group

Description:

Full coverage Lithium disilicate restorations will be fabricated on a tooth requiring full coverage in the esthetic zone.

Treatment:

Other: Lithium disilicate restorations