Clinical Evaluation of Internal Fit of Milled BioHPP Polyetheretherketone (PEEK) - Based Versus Zirconia-Based Single Crowns

Not Applicable

• Conditions: Badly Decayed Teeth andTeeth Restored With Large Filling Restorations and Endodontically Treated Teeth and Malformed Teeth and Malposed Teeth

• Registration Number: NCT04052789
• Lead Sponsor: Cairo University

Brief Summary

All ceramic crowns are indicated in case of mild to moderate discoloration, restoration of traumatized or fractured teeth and abnormal tooth anatomy. The success of dental restorations is determined by four main factors: biocompatibility, aesthetic value, resistance to fracture and marginal adaptation. . An inadequate marginal fit may compromise the longevity of the restoration since cement film exposure to the oral environment can lead to its dissolution . .

Polyetheretherketone (PEEK) is a polymer that has many potentials uses in dentistry. Polyetheretherketone (PEEK) can be used to support fixed dental prostheses. However, information about physio mechanical characterization is still scarce.

Aim of the study:

- The aim of this study is to evaluate the internal fit of milled BioHPP PEEK-based versus zirconia-based single crowns.

Detailed Description

Not available

Study Timeline

• Status Verified: 2019-08
• Study First Submitted: 2019-08-04
• Study First Submitted QC: 2019-08-09
• Study First Posted: 2019-08-12
• Last Update Submitted: 2019-08-12
• Last Update Posted: 2019-08-13
• Study Start: 2019-09-01
• Primary Completion: 2020-08-01
• Study Completion: 2020-08-01

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 16

Inclusion Criteria

• From 18-50 years old, be able to read and sign the informed consent document.
• Patient Have no active periodontal or pulpal diseases, have teeth with good restorations
• Patient Psychologically and physically able to withstand conventional dental procedures
• Patients with teeth problems indicated for single posterior crowns:

Exclusion Criteria

• Patient less than 18 or more than 50 years
• Patient with active resistant periodontal diseases
• Patients with poor oral hygiene and uncooperative patients
• Patients in the growth stage with partially erupted teeth
• Patient with Psychiatric problems or unrealistic expectations
• Patient with Lack of opposing dentition in the area of interest

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Internal fit of the crown by measuring the thickness of the replica by steriomicroscope	one year	measured by replica technique and steriomicroscope

Secondary Outcome Measures

Name	Time	Method
secondary caries if present at the margin of the crown by using probe	one year	Measured by modified Ryge criteria Alpha (A)The restoration is a continuation of existing anatomic form adjacent to the restoration.; Bravo (B)There is visual evidence of dark keep discoloration adjacent to the restoration (but notAlpha (A)The restoration is a continuation of existing anatomic form adjacent to the restoration.; Bravo (B)There is visual evidence of dark keep discoloration adjacent to the restoration (but not directly associated with cavosurface margins).; directly associated with cavosurface margins).