Marginal Fit of Porcelain Veneers After Finishing Prepared Surfaces With Ultrasonic Tips

March 11, 2016 updated by: Damascus University

A Double-blind Split-mouth Randomized Clinical Trail Evaluating Marginal Fit of Porcelain Laminate Veneers Following Finishing the Prepared Surfaces With Ultrasonic Tips Compared to the Conventional Way

The aim of the study is to assess the marginal fit following preparation finishing with ultrasonic tips of porcelain veneers compared to the ordinary preparation using burs only. Two-hundred and forty crowns prepared to receive porcelain veneers (in a split-mouth design). On one side of the mouth, the prepared surfaces will be finished with ultrasonic tips. Marginal fit is measured by a 'cement replica technique'.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

All-ceramic restoration are increasing in daily routine treatments although remain less popular than metal-ceramic crowns especially as the cost of metal rises and aesthetic requested people increases The increased demand for aesthetic treatments has led to the widespread use of metal-free ceramics for conservative restorations. Whilst studies for clinical porcelain restorations clarifies satisfactory success rates describes the reasons for failure is due to advance the techniques and materials used in dental restorations. All-ceramic restorations failures are due to several reasons, such as restoration fractures, discoloration in marginal area, marginal misfits and secondary decays. However, secondary caries is the main failure mentioned by the studies, responsible for 21% of the suddenly crown replacements. The etiology of secondary caries is as classified to primary caries, with the involvement of the same cariogenic microorganisms. The place and spread where to invade of primary and secondary lesions are also similar, with secondary caries developing mainly in the gingival tooth interface of restored teeth. Different authors have mentioned different instrumentation to prepare teeth appropriately.Preparation may be applied using diamond burs attached to sonic devices or high-speed rotating instruments with diamond or tungsten carbide burs. The action of conventional high-speed instruments applied for tooth preparation has been widely researched as well as the adhesion strengths and marginal microleakage it produces. Some authors insisted that dental surface morphology of prepared teeth is influenced by the type of bur used for preparation.

Study Type

Interventional

Enrollment (Actual)

27

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Syrian Arab Republic
      • Damascus, Syrian Arab Republic, DM20AM18
        • Department of Fixed Prosthodontics, University of Damsacus

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

20 years to 40 years (ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • aesthetic requirement with no cracks and congenital loss of any incisors.
  • discolored teeth not responding to bleaching.

Exclusion Criteria:

  • evidence proximal caries ,
  • edge to edge occlusion
  • parafunctional habits
  • root canal treated teeth.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: DOUBLE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: Ultrasonic tips
Prepared surfaces will be finished with ultrasonic tips
Procedure: Ultrasonic tips
These tips are going to be used to give the final shape of the prepared surfaces before taking the impression for the construction of the veneers.
NO_INTERVENTION: Conventional
Prepared surfaces will be finished with ordinary burs

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Thickness of the light silicone layer encompassed between the abutment and the veneer
Time Frame: measurement will be made immediately (in the same day) of applying the constructed veneers onto the prepared dental surfaces
A light silicone material is going to be used to allow for measuring any gaps beneath the veneers. The measurement will be in micrometer using a microscope.
measurement will be made immediately (in the same day) of applying the constructed veneers onto the prepared dental surfaces

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Damascus University

Investigators

  • Principal Investigator: Anas Abdo, DDS, MSc student in Prosthodontics, University of Damascus Dental School
  • Study Director: Mirza Allaf, DDS MSc PhD, Associate Professor of Prosthodontics

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 2015

Primary Completion (ACTUAL)

February 1, 2016

Study Completion (ACTUAL)

March 1, 2016

Study Registration Dates

First Submitted

February 6, 2016

First Submitted That Met QC Criteria

February 16, 2016

First Posted (ESTIMATE)

February 17, 2016

Study Record Updates

Last Update Posted (ESTIMATE)

March 15, 2016

Last Update Submitted That Met QC Criteria

March 11, 2016

Last Verified

March 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • UDDS-FixPro-01-2016

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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