Clinical Behavior and Patient Satisfaction of Zirconia-reinforced Glass-ceramic Crowns and Ultra-translucent-multilayered Monolithic Zirconia Crowns With a Conservative Marginal Design

N/ANot Yet RecruitingNCT07521501

Cairo University20 enrolled

Overview

The aim of the present study is to evaluate clinical behavior and patient satisfaction of Zirconia-reinforced lithium disilicate press ceramic crowns when used in a conservative marginal design(0.6mm chamfer finish line). Comparison with Ultratranslucent multilayered monolithic zirconiacrowns will also be carried out in terms of marginal integrity, fracture, color stability and gingival health for 12 month

* Select and examine patients based on inclusion/exclusion criteria, then obtain consent. * Diagnose chief complaint, assess teeth in the esthetic zone, and perform scaling/polishing. * Take primary impressions for study casts. * Instruct patients to brush three times daily for good oral hygiene. * Capture pre-op photos and radiographs. * Choose the appropriate shade. * Tooth Preparation: * Group 1: Ultra-translucent zirconia crown (CAD/CAM, 0.6mm chamfer). * Group 2: Zirconia-reinforced lithium disilicate crown (press, 0.6mm chamfer). * Perform tissue retraction and take impressions with IOS. * Create provisional crowns. * Fabricate crowns (AMBRIA or KATANA zirconia) per manufacturer guidelines. * Conduct try-in. * Cement using light-cured resin adhesive. * Assess restoration at 3, 6, 9 and 12 months for clinical behavior and patient satisfaction

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

Conditions

Clinical Behavior of ZLS and UTML

Eligibility

Sex: ALLMin age: 21 YearsMax age: 50 Years

Medical Language ↔ Plain English

Inclusion Criteria: 1. The age range of the patients from 21- 50 years old; able to read and sign the informed consent document; illiterate patients will be avoided. 2. Patients who can physically and psychologically tolerate conventional restorative procedures. 3. Patients with endodontically treated teeth indicated for ceramic crowns in the esthetic Zone (all axial walls existing). 4. Patients with no active periodontal or pulpal diseases. 5. Patients with teeth problems indicated for full coverage restoration in the esthetic zone (e.g. moderate to severe discoloration, coronal chipping where partial coverage would lack retention, malposed or malformed teeth). 6. Patients willing to return for follow-up examinations and evaluation. 7. Patients that care for good oral hygiene Maintenance. Exclusion Criteria: 1 Patients with poor oral hygiene and motivation. 2. high caries rate. 3. Patients with psychiatric problems or unrealistic expectations (patient that has phobia from dental treatments or needle bunch). 4. Patients suffering from parafunctional habits or temporomandibular disorders. 7\. Patients with teeth have extensive tooth structure loss, even if one wall is missing.

Outcomes

Primary Outcomes

clinical behavior

Marginal integrity: Measuring device: Modified USPHS criteria. Measuring unit: Discrete (scores).

Time frame: 12 months follow-up interval

Fracture:

Description: Measuring device: Modified USPHS criteria Measuring unit: Discrete (scores).

Time frame: Time Frame: 12 months follow-up interval.

Color stability:

Description: Measuring device: Spectrophotometer Measuring unit: ΔE.

Time frame: Time Frame: 12 months follow-up interval

Gingival health:

Measuring device: Gingival index \& Bleeding on probing (BOP) Measuring unit: (scores).

Clinical Behavior and Patient Satisfaction of Zirconia-reinforced Glass-ceramic Crowns and Ultra-translucent-multilayered Monolithic Zirconia Crowns With a Conservative Marginal Design

Overview

Conditions

Interventions

Eligibility

Outcomes

Primary Outcomes

Secondary Outcomes

Central Contacts