Edentulous JawNCT07662590
Mechanical Complications of Full Arch Monolithic Zirconia Restorations to Restore Completely Edentulous Patients Scanned by Horizontal Scan Bodies; A Case Series
A study testing scan ladder in people with Edentulous Jaw, run by Cairo University at 1 site in Egypt.
Trial summary
the study is concerned with assessing retrospectively the survival and complication rates of monolithic zirconia implant-supported fixed full arch dental restoration scanned using scan ladder scan body over a follow-up period of 1 year. Read more about this study
- Who is it for?
- Ages 40 to 70 yearsHealthy volunteers can take part
- Conditions the study is for
- Edentulous Jaw
- What is being tested?
- scan ladder
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 25 participants
- Where
- 1 siteEgypt
- Study dates
- 1 Dec 2024to 15 Jun 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 40 to 70 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- - Any completely edentulous patient (mandible) with an old satisfactory denture requiring an implant-supported restoration.
- Patients aged from 40 to 70, able to sign an informed consent will be considered eligible for this trial.
- Implant sites must allow the placement of four implants.
- Non- heavy Smokers will be included (smoking up to 10 cigarettes/day)
- In case of post-extractive sites, they must have been healed for at least 3-month before being treated in the study.
- Patients with no systemic condition that may interfere with implant placement (e.g., Immunosuppressed or immunocompromised patients, patients under treatment of intravenous amino-bisphosphonates)
Who cannot join
- - Patients with poor oral hygiene and motivation.
- Pregnancy or nursing.
- Drug abusers.
- Psychiatric problems or unrealistic expectations.
- Patients with infection and or inflammation in the area intended for implant placement.
- Patients participating in other studies, if the present protocol cannot be properly adhered to.
- Patients with signs of hyperactive muscles.
Trial locations and contacts
1 site in 1 country.
About this study
the study is concerned with assessing retrospectively the survival and complication rates of monolithic zirconia implant-supported fixed full arch dental restoration scanned using scan ladder scan body over a follow-up period of 1 year.
- Conditions
- Edentulous Jaw
- Being tested
- scan ladder
- Medical subject headings
- Jaw, Edentulous
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
scan ladderDevice
Also called horizontal scan body
Prosthetic steps with a digital workflow by placing horizontal scan bodies "scan ladder" and using of intraoral scanner "Medit i900" will be done. The final restoration is designed and a monolithic zirconia full arch titanium free restoration was milled and delivered after ensuring passivity and occlusion.
| Study group | Role | What they receive |
|---|---|---|
| using scan ladder scan bodies | Experimental | Restorations were fabricated using fully digital workflow from scanning to fabrication. Scanning was done using intraoral scanner and horizontal scan bodies "scan ladder scan bodies". Receives: Device: scan ladder |
What is being measured
The primary outcome is the main question the study is designed to answer.
technical complications
reported any events of complications in the final restoration
Measured: 18 months
Secondary outcomes (1)
restoration survival
any catastrophic loss of restorations
Measured: 18 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Jun 2026
- Study start1 Dec 2024
- Primary completion1 Jun 2026
- Study completion15 Jun 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Edentulous JawStudies of the same condition, open and under way.
- More trials run by Cairo UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 25 participants (actual)
Sponsor and investigators
- Lead sponsor
- Cairo University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, tasneem gamal youssef el mashad, Cairo University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07662590
- Sponsor's protocol ID
- 123678
- Status last verified
- Jun 2026
- First submitted
- 17 Jun 2026
- Last updated
- 23 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 23 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Mechanical Complications of Full Arch Monolithic Zirconia Restorations to Restore Completely Edentulous Patients Scanned by Horizontal Scan Bodies; A Case Series
- ClinicalTrials.gov ID
- NCT07662590
- Acronym / sponsor ID
- 123678
- Conditions
- Edentulous Jaw
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 25 participants (actual)
- Lead sponsor
- Cairo UniversityUniversity, hospital or other
- Study start
- 1 Dec 2024 (actual)
- Primary completion
- 1 Jun 2026 (actual)
- Study completion
- 15 Jun 2026 (actual)
- First posted
- 23 Jun 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
the study is concerned with assessing retrospectively the survival and complication rates of monolithic zirconia implant-supported fixed full arch dental restoration scanned using scan ladder scan body over a follow-up period of 1 year.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| using scan ladder scan bodies | Experimental | Device: scan ladderRestorations were fabricated using fully digital workflow from scanning to fabrication. Scanning was done using intraoral scanner and horizontal scan bodies "scan ladder scan bodies". |
Who may qualify
- Ages
- 40 to 70 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- - Any completely edentulous patient (mandible) with an old satisfactory denture requiring an implant-supported restoration.
- Patients aged from 40 to 70, able to sign an informed consent will be considered eligible for this trial.
- Implant sites must allow the placement of four implants.
- Non- heavy Smokers will be included (smoking up to 10 cigarettes/day)
- In case of post-extractive sites, they must have been healed for at least 3-month before being treated in the study.
Key exclusion criteria (7 listed)
- - Patients with poor oral hygiene and motivation.
- Pregnancy or nursing.
- Drug abusers.
- Psychiatric problems or unrealistic expectations.
- Patients with infection and or inflammation in the area intended for implant placement.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| scan ladderAlso: horizontal scan bodyProsthetic steps with a digital workflow by placing horizontal scan bodies "scan ladder" and using of intraoral scanner "Medit i900" will be done. The final restoration is designed and a monolithic zirconia full arch titanium free restoration was milled and delivered after ensuring passivity and occlusion. | Device | using scan ladder scan bodies |
Primary outcome
technical complications
Time frame: 18 months
reported any events of complications in the final restoration
1 secondary outcome
restoration survival
Time frame: 18 months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 23 Jun 2026.
Related trials for Edentulous Jaw
Active, not recruiting
L-PRF Block vs Composite Graft for Horizontal Ridge Augmentation
Alveolar Ridge Resorption After Extraction, Alveolar Bone Loss
Not yet recruitingObservational study
Digital and Conventional Clasp-retained Partial Dentures (DIGICLASP)
Partial Edentulism
Recruiting
Dynamic vs. Static Jaw Relations in Implant-Supported Prostheses: Chewing Efficiency
Chewing Efficiency in Completely Edentulous Patients Rehabilitated With Implant-Supported Full-Arch Prostheses
Active, not recruiting
Multicenter Study to Evaluate the Clinical Outcome of PrimeTaper EV Implant in Single Tooth Restorations
Jaw, Edentulous, Partially
Recruiting
Clinical and Radiographic Evaluation of UV-Treated Dental Implants With or Without Melatonin in the Upper Posterior Jaw
Jaw, Edentulous, Partially, Bone Resorption
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing scan ladder in people with Edentulous Jaw, run by Cairo University at 1 site in Egypt.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 23 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
technical complications (time frame: 18 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Jun 2026.