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Functional Evaluation of Ceramic Onlay Restorations With Different Preparation Designs

NCT04274959 · Status: UNKNOWN · Phase: NA · Type: INTERVENTIONAL · Enrollment: 39

Last updated 2020-02-18

No results posted yet for this study

Summary

Tooth preparation designs for posterior ceramic restorations have been based on traditional cast metal restoration designs, but with more occlusal tooth reduction and with a slightly increased taper. These preparations may involve the removal of considerable tooth structure. As more structure is removed, higher tooth strain and lower fracture resistance may occur.5 The increased tooth structure loss may increase cuspal flexure, thereby reducing the tooth fracture resistance, or open the restoration-tooth interface .

However, it has been demonstrated that cusp recovery results in fewer failures, likely increasing the longevity of posterior ceramic restorations. Recently, minimally invasive cavity preparations for posterior indirect restorations were demonstrated to present the benefit of conservation of tooth structure, as well as improved stress distribution. However, the performance of posterior restoration is also material dependent. Due to the continuous advancements in dental ceramics and innovative manufacturing techniques.

The aim of this study is to evaluate the clinical functional performance of ceramic onlay restorations with butt joint preparation design and compare them to shoulder preparation design.

Conditions

  • Posterior Ceramic Onlays
  • Badly Decayed Teeth Need to be Restored , Teeth Restored With Large Filling Restorations

Interventions

OTHER

ceramic onlay with shoulder preparation design.

ceramic onlay with shoulder preparation design which allowing the largest possible enamel for adhesion ,

OTHER

,ceramic onlay with butt joint preparation design

ceramic onlay with butt joint preparation design with cusp reduction to protect teeth from occlusal loads and cuspal fracture

Sponsors & Collaborators

  • Cairo University

    lead OTHER

Principal Investigators

  • nora alsedawy, M.D.s · Cairo University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
25 Years
Max Age
45 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2020-02-20
Primary Completion
2021-02-01
Completion
2021-06-01

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04274959 on ClinicalTrials.gov