Evaluation of the Abutment Type Following Oral Implants in Terms of the Surrounding Bone Height

April 28, 2022 updated by: Damascus University

Evaluation of Two Different Types of Abutments on Post-prosthesis Bone Resorption: A Randomized Controlled Clinical and Radiological Trial

Compare two different types of abutments (molded abutments and computer-designed 3D printed abutments) in terms of the amount of bone loss, and depth of periodontal pockets around the implant during different periods.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

In the past few years, the number of research conducted on the designs of abutments and materials has increased. Often, the restoration is done over the implant using standard abutments that the implant company prefabricated, but due to the problems facing the dentist from the occurrence of bone absorption, an increase in the depth of the pocket after restoration, other types of abutment design methods have been introduced as needed (molded abutment made by lost wax technique and computer-designed abutment made using a 3D laser printer), those customised abutments were made special for each patient depending on their conditions.

Study Type

Interventional

Enrollment (Actual)

32

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

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 50 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • The patient's age is greater than 20 years and younger than 50
  • Good oral health
  • Absence of systemic diseases that may affect the healing of surrounding tissues, such as diabetes.

Exclusion Criteria:

  • The presence of non-functional habits such as stridor
  • Acute or acute periodontitis, previous loss of implants
  • Poor general health conditions
  • Previous radiotherapy in the head and neck area
  • Mental incompetence
  • Orthodontic treatment

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 Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Molded abutment
A plastic abutment that is provided by the implant manufacturer will be used. This abutment will be modified using wax, and then it will be dismantled, wedged, and poured using a Ni-Cr mixture. A plastic abutment that the implant manufacturer provides will be used. This abutment will be modified using wax, and then it will be dismantled, wedged, and poured using a Ni-Cr mixture.
Other: Molded abutment

The waxed plastic abutment will dismantle, wedged, and poured using a Ni-Cr mixture then it will be trimmed to make it ready to make the permanent restoration over it.

The prostheses will be cemented above the abutment using dual-cure resin cement then the final restoration (crown and abutment) will be fixed using a screw-retained manner.
Experimental: 3D printed abutment
The customised abutment will be made using a laser printer with a Cr-Co mixture after being designed using a special computer program.
Other: 3D printed abutment
A marker or Scan body appropriate for the type of implant will be placed on the laboratory implant substitute, a digital scan of the marker will be done in the lab, and the scanned image will be transferred to a computer design software where the prosthesis is designed, In the printing phase, the final prosthesis will be manufactured using a stepwise metal powder supply and a laser fusion process. Making the abutment ready to make the permanent restoration over it. The prostheses will be cemented above the abutment using dual-cure resin cement then the final restoration (crown and abutment) will be fixed using a screw-retained manner.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in the crestal bone height
Time Frame: T1:3 months after cementation, T2: 6 months after cementation, T3: 1 year after cementation

It Is the loss of bone that occurred around the dental implant neck after fixing the final prosthesis (abutment and crown).

A periapical radiograph is going to be taken using a digital intra-oral sensor with a special holder in a parallel way, to measure the changes that occurred at the level of the bone around the implant depending on MBLS concept taking two referring points from the neck of the abutment to the first match of the bone with the abutment using special programs on computer (Photoshop) during different periods.
T1:3 months after cementation, T2: 6 months after cementation, T3: 1 year after cementation

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in the depth of periodontal pockets
Time Frame: T1: direct after cementation, T2:3 months after cementation, T3: 6 months after cementation, T4: 1 year after cementation
Periodontal pockets are spaces surrounding the implant under the gum line. The pocket around the implant will be measured by using special plastic probe slides between the implant and gum to measure the depth of the periodontal pocket, and the changes in the depth of pockets will be noted and register after fixing the final prosthesis (abutment and crown), during different periods.
T1: direct after cementation, T2:3 months after cementation, T3: 6 months after cementation, T4: 1 year after cementation

Collaborators and Investigators

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

Sponsor

Damascus University

Investigators

  • Principal Investigator: Mohammad Anas Almodalal, DDS,MSc, Department of fixed prosthodontics , Damascus University, Syria
  • Study Director: Mohammad Luai Morad, DDS,MSc,PhD, Department of fixed prosthodontics , Damascus University, Syria

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 (Actual)

September 2, 2020

Primary Completion (Actual)

December 11, 2021

Study Completion (Actual)

March 23, 2022

Study Registration Dates

First Submitted

April 22, 2022

First Submitted That Met QC Criteria

April 22, 2022

First Posted (Actual)

April 28, 2022

Study Record Updates

Last Update Posted (Actual)

May 4, 2022

Last Update Submitted That Met QC Criteria

April 28, 2022

Last Verified

April 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • UDDS-Ortho-08-2022

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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