Clinical Outcomes of Zirconia-reinforced Lithium Silicate Partial Coverage Crowns Compared to Lithium Disilicate Partial Coverage Crowns

Cairo University46 enrolled

Overview

The purpose of this randomized controlled clinical trial is to evaluate the clinical outcomes of Partial Coverage Restorations fabricated with zirconia-reinforced lithium silicate ceramic system compared to partial coverage restorations fabricated with lithium disilicate ceramic system.

This study is constructed to assess in patients with carious vital posterior teeth whether the use of Vita Suprinity® (VITA Zahnfabrik H. Rauter GmbH \& Co.KG- Germany) Zirconia reinforced lithium silicate partial coverage restorations will result in higher survival rates and better patient related outcome scores compared to IPS-e.max® CAD (Ivoclar Vivadent AG, Schaan - Liechtenstein) lithium disilicate partial coverage restorations.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

Conditions

Partial Coverage Restoration

Interventions

Vita SuprinityOTHER

zirconia reinforced lithium silicate partial coverage restorations

IPS e.maxOTHER

lithium disilicate partial coverage restorations

Eligibility

Sex: ALLMin age: 18 YearsMax age: 50 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Participants: * Good oral hygiene, papillary bleeding index (PBI) \< 35%. * Positive patient acceptance to participate in the trial. Teeth: * Carious class II or MOD lesions * Vital upper or lower posterior teeth with no signs of irreversible pulpitis. * Normal occlusion * Single tooth restoration (no edentulous space that requires fixed prosthesis) Exclusion Criteria: * Participants * Pregnancy. * Disabilities. * Systemic disease or severe medical complications. * Bad oral hygiene * Heavy smoking. * Xerostomia. * Lack of compliance. * Evidence of severe bruxism, clenching, or temporomandibular disorders. Teeth: * Deep carious defects (close to pulp, less than 1 mm distance). * Periapical pathology or signs of pulpal pathology. * Tooth hypersensitivity. * Rampant caries. * Non-vital or endodontically treated teeth. * Sever periodontal affection. * Tooth mobility

Locations (1)

Faculty of Oral and Dental Medicine- Cairo University

Cairo, Egypt

Outcomes

Primary Outcomes

Survival rate

Absolute failure is defined by clinical unacceptable fracture and crack development which required a replacement of the entire restoration, and/or secondary caries as well as endodontic complications

Time frame: 12 month

Secondary Outcomes

Restorations with Marginal gap as assessed visually by US public health service criteria

restorations with visually detectable margin, catch or penetration of explorer at baseline or a change from baseline on visual analogue scale at 12 month

Time frame: 12 month

Restorations with Marginal discoloration as assessed visually by US public health service criteria

restorations with visually detectable discoloration along margin at baseline or a change from baseline on visual analogue scale at 12 month

Time frame: 12 month

Restorations with color mismatch with adjacent teeth as assessed visually by US public health service criteria

restorations with visually detectable color mismatch with adjacent teeth at baseline or a change from baseline on visual analogue scale at 12 month

Time frame: 12 month

Restorations with surface roughness as assessed tactilely by US public health service criteria

restorations with tactilely detectable rough surface at baseline or a change from baseline on visual analogue scale at 12 month

Time frame: 12 month

Restorations developed secondary caries as assessed visually by US public health service criteria

restorations with visually detectable secondary caries at baseline or a change from baseline on visual analogue scale at 12 month

Data from ClinicalTrials.gov

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