NCT04694209

Brief Summary

Objectives to evaluate the oral health-related quality of life and patient satisfaction in completely edentulous patients, when restored by maxillary and mandibular fixed (screw-retained) or removable telescopic retained implant supported prosthesis. 19 patients were randomized to receive either a fixed or a removable maxillary and mandibular full arch implant prosthesis. They were then asked to answer the OHIP-14 and a patient satisfaction questionnaire at 2 weeks, 3, 6 and 12 months post-prosthetic insertion.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
19

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Nov 2017

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

November 1, 2017

Completed
11 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 30, 2018

Completed
11 months until next milestone

Study Completion

Last participant's last visit for all outcomes

August 28, 2019

Completed
1.3 years until next milestone

First Submitted

Initial submission to the registry

December 24, 2020

Completed
12 days until next milestone

First Posted

Study publicly available on registry

January 5, 2021

Completed
Last Updated

March 10, 2021

Status Verified

March 1, 2021

Enrollment Period

11 months

First QC Date

December 24, 2020

Last Update Submit

March 8, 2021

Conditions

Outcome Measures

Primary Outcomes (1)

  • patient satisfaction

    questionnaire. The patient satisfaction questionnaire is composed of 14 questions concerned with esthetics, speech, mastication, operative and prosthetic procedures, incidence of complications, pre-operative instructions, total time interval, cost, operator, hygienic procedures, overall experience as well as the willingness to repeat or refer others for the procedure.

    2 weeks after prosthetic insertion- 1 year

Secondary Outcomes (1)

  • oral health related quality of life

    2 weeks after prosthetic insertion- 1 year

Study Arms (2)

Fixed implant supported prosthesis

EXPERIMENTAL

the prosthesis is an all-on-four prosthesis composed of a hybrid prosthesis. a metal framework, acrylic resin denture base and acrylic resin teeth

Procedure: maxillary and mandibular screw retained hybrid prostheses supported by 4 implants

Removable implant supported prosthesis

ACTIVE COMPARATOR

the prosthesis is an all-on-four prosthesis composed of a telescopic retained overdenture, both primary and secondary copings are custom made. the secondary copings are conncetd via a metal framework

Procedure: maxillary and mandibular telescopic retained overdentures supported by 4 implants

Interventions

The wax of the trial denture was converted into heat-cured acrylic resin using conventional packing and flasking techniques. The prosthesis was finished, polished and screwed in the patient's mouth. Engaging (Internal hex) cylindrical, plastic patterns (Octa plastic cylinder, multi unit abutment, Red, Dentis, Daegu -Korea) were used to construct the primary copings of the telescopic prosthesis.The finished primary copings were scanned using a lab scanner (Shera Echo-scan 7. Dental Wings, Montreal-Canada). This was necessary to design and to mill the wax pattern of the secondary copings using CAD/CAM technology (Dental Wings Software, Dental Wings, Montreal -Canada). Secondary coping was designed to properly fit to the primary coping. The framework was then tried in. At that time it was ready for its intra-oral luting to the secondary copings.

Removable implant supported prosthesis

Framework of the hybrid prosthesis is waxed using plastic copings attached to multiunit abutments. once the framework is finished , bite is recorded, teeth are set up and the waxed up prosthesis are tried in. IF accepted the wax is eliminated the wax up denture is converted inti heat cured acrylic resin

Fixed implant supported prosthesis

Eligibility Criteria

Age40 Years - 70 Years
Sexmale
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Completely edentulous male patients with an age range from 40- 70 years.
  • Patients with a HbA1c equal to or less than 7
  • All patients should have normal maxillo-mandibular relationship (Angle class I).
  • Patients should have maxillary and mandibular ridges at least 7mm in width and 13 mm in height in the interforaminal areas and in the esthetic zones (premolar to premolar regions), respectively. This accommodated a pre-planned implant size of 3.7mm x 10 or 11mm.
  • The maxillary and mandibular ridges should be covered by keratinized attached mucosa at least 5mm in width.
  • An interarch space between the edentulous maxillary and mandibular ridges should not be less than 22 mm to accommodate the planned maxillary and mandibular implant-supported prostheses. This was confirmed by mounted diagnostic casts.
  • Patients who were cooperative and who were psychologically and mentally stable as revealed from the initial interview with the patients were considered eligible.

You may not qualify if:

  • Females were excluded on purpose to prevent failures associated with osteoporosis and to avoid gender variability which definitely affects the results of patient satisfaction and OHIP.
  • \. Patients requiring hard or, soft tissue grafting of the proposed implant sites.
  • \. Heavy smokers (more than 10 cigarettes / day) or patients with para-functional habits like clenching or bruxism were excluded. This was important to decrease the risk of implant failure.
  • \. Patients with temporo-mandibular joint disorders were considered ineligible because of the expected occlusal disturbances.
  • \. Patients with systemic disease that might contra-indicate implants placement or affect osseointegration e.g. uncontrolled diabetes.
  • \. Patients who took chemo-or radiotherapy or any drug that might counter-affect the healing process or the quality of bone.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Faculty of dentistry

Cairo, Manial, 12911, Egypt

Location

Study Officials

  • Amira kheidr, masters

    Cairo University

    PRINCIPAL INVESTIGATOR
  • Amr El Khadem, phd

    Cairo University

    STUDY DIRECTOR
  • Samira Ibrahim, phd

    Cairo University

    STUDY CHAIR
  • Iman Radi, phd

    Cairo University

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
professor of prosthodontics

Study Record Dates

First Submitted

December 24, 2020

First Posted

January 5, 2021

Study Start

November 1, 2017

Primary Completion

September 30, 2018

Study Completion

August 28, 2019

Last Updated

March 10, 2021

Record last verified: 2021-03

Data Sharing

IPD Sharing
Will not share

Locations