Partially Edentulous MandibleQuasiNCT07657910
Evaluation of Occlusal Contact Distribution in Digitally Fabricated Implant-Retained Fixed Partial Dentures in Mandibular Kennedy Class II Patients Following Artificial Intelligence Bite Optimization: A Quasi-Experimental Study
A study testing After and Before in people with Partially Edentulous Mandible, run by Cairo University at 1 site in Egypt.
Trial summary
The aim of the study is to evaluate the occlusal contact distribution in digitally fabricated implant-retained fixed partial dentures in mandibular Kennedy Class II patients before and after artificial intelligence bite optimization. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Partially Edentulous Mandible
- What is being tested?
- After and Before
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 15 participants
- Where
- 1 siteEgypt
- Study dates
- Jun 2026to Sep 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Patients with a unilateral mandibular distal extension area (Kennedy Class II partially edentulous mandibular arch) and who are indicated for the insertion of 2 implants.
- Fully dentate opposing maxillary arch or restored with a suitable, well constructed fixed prosthesis.
- The remaining teeth should be in good periodontal health, with no signs of inflammation or movement.
- The edentulous area should be covered by a healthy, firm mucoperiosteum, with no or minimal tissue undercut.
- Patient should be with class I occlusion.
- No occlusal disorder; stable jaw relation.
- No TMD signs or symptoms.
- Patients should be in generally good health and free of systemic conditions that can affect the implant treatment, such as diabetes mellitus.
Who cannot join
- Patients with psychological or mental disorders.
- Patients with insufficient interarch space.
- Patients with parafunctional habits, such as bruxism.
- After the healing phase and exactly before the prosthetic phase, if the inserted implants showed any signs of peri-implantitis or aggressive crestal bone resorption, then this case will be excluded and replaced with another case.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Egypt1 site
Faculty of Dentistry - Cairo University
Giza, 12511
Noha Barakat, Masters degree, 01149902334 ext. 002, noha.barakat@dentistry.cu.edu.eg
About this study
The aim of the study is to evaluate the occlusal contact distribution in digitally fabricated implant-retained fixed partial dentures in mandibular Kennedy Class II patients before and after artificial intelligence bite optimization.
Read the detailed description
The recruited patients will be screened for proper bone architecture and CBCTs will be taken for proper virtual implant planning. Two implants will be placed in the edentulous span in all participants. All surgical steps will be held according to standard protocol. After the implant osseointegration period, the prosthetic phase will start with implant exposure and placement of multiunit abutments. After gingival healing, intraoral scans for the implants timing using abutment level scan bodies will be taken. Then, the fabrication of implant-retained fixed partial denture will be done with a fully digital workflow. The data acquisition will take place by scanning the patients using Medit intraoral scanner. Then, the scanned stls will be imported in 3shape software version 2024 and bite optimization module in it will be run. It automatically recalculates the position of the bite relation using its integrated AI. After that, the resulted STLs will be exported and re-imported to ExoCAD software to design the prostheses.
- Conditions
- Partially Edentulous Mandible
- Being tested
- After, Before
- Keywords
- Kennedy Class II, mandible, Bite optimization, implant, 3shape, Artificial intelligence, Occlusal contact
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
AfterProcedure or surgery
The data acquisition will take place by scanning the patients using Medit intraoral scanner. Then, the scanned stls will be imported in 3shape software version 2024 and bite optimization module in it will be run. It automatically recalculates the position of the bite relation using its integrated AI. After that, the resulted STLs will be exported and re-imported to ExoCAD software to design the prostheses.
BeforeProcedure or surgery
The recruited patients will be screened for proper bone architecture and CBCTs will be taken for proper virtual implant planning. Two implants will be placed in the edentulous span in all participants. All surgical steps will be held according to standard protocol. After the implant osseointegration period, the prosthetic phase will start with implant exposure and placement of multiunit abutments. After gingival healing, intraoral scans for the implants timing using abutment level scan bodies will be taken. Then, the fabrication of implant-retained fixed partial denture will be done with a fully digital workflow.
| Study group | Role | What they receive |
|---|---|---|
| Before | Experimental | The recruited patients will be screened for proper bone architecture and CBCTs will be taken for proper virtual implant planning. Two implants will be placed in the edentulous span in all participants. All surgical steps will be held according to standard protocol. After the implant osseointegration period, the prosthetic phase will start with implant exposure and placement of multiunit abutments. After gingival healing, intraoral scans for the implants timing using abutment level scan bodies will be taken. Then, the fabrication of implant-retained fixed partial denture will be done with a fully digital workflow. Receives: Procedure: Before |
| After | Active comparator | The data acquisition will take place by scanning the patients using Medit intraoral scanner. Then, the scanned stls will be imported in 3shape software version 2024 and bite optimization module in it will be run. It automatically recalculates the position of the bite relation using its integrated AI. After that, the resulted STLs will be exported and re-imported to ExoCAD software to design the prostheses. Receives: Procedure: After |
What is being measured
The primary outcome is the main question the study is designed to answer.
Occlusal contact distribution
The 1ry outcome will be assessed on the day of the prosthesis delivery. First, the reading of the occlusal contact distribution will be taken by using the T-scan device before seating the prosthesis intraorally.
Then, the retained fixed prosthesis will be seated on the implant abutment, and the prosthetic screw will be screwed to the optimum torque. Another reading of the occlusal contact distribution will be taken by using the T-scan device after seating and torquing the prosthesis intraorally. Finally, the screw access channels will be closed by flowable resin composite material.
Measured: From enrollment till the end of the study 17 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Jun 2026
- Study startJun 2026 (estimated)
- Primary completionSep 2026 (estimated)
- Study completionSep 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Partially Edentulous MandibleStudies 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
- Non-randomised
- Intervention model
- Sequential
- Masking
- None (open label)
- Enrolment
- 15 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Cairo University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Noha Waleed Fathalla Moustafa Barakat, Cairo University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07657910
- Sponsor's protocol ID
- 24226
- Acronym
- Quasi
- Status last verified
- Jun 2026
- First submitted
- 14 Jun 2026
- Last updated
- 18 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 18 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of Occlusal Contact Distribution in Digitally Fabricated Implant-Retained Fixed Partial Dentures in Mandibular Kennedy Class II Patients Following Artificial Intelligence Bite Optimization: A Quasi-Experimental Study
- ClinicalTrials.gov ID
- NCT07657910
- Acronym / sponsor ID
- Quasi / 24226
- Conditions
- Partially Edentulous Mandible
- Keywords
- Kennedy Class II, mandible, Bite optimization, implant, 3shape, Artificial intelligence, Occlusal contact
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 15 participants (estimated)
- Lead sponsor
- Cairo UniversityUniversity, hospital or other
- Study start
- Jun 2026 (estimated)
- Primary completion
- Sep 2026 (estimated)
- Study completion
- Sep 2026 (estimated)
- First posted
- 18 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 aim of the study is to evaluate the occlusal contact distribution in digitally fabricated implant-retained fixed partial dentures in mandibular Kennedy Class II patients before and after artificial intelligence bite optimization.
Detailed description
The recruited patients will be screened for proper bone architecture and CBCTs will be taken for proper virtual implant planning. Two implants will be placed in the edentulous span in all participants. All surgical steps will be held according to standard protocol. After the implant osseointegration period, the prosthetic phase will start with implant exposure and placement of multiunit abutments. After gingival healing, intraoral scans for the implants timing using abutment level scan bodies will be taken. Then, the fabrication of implant-retained fixed partial denture will be done with a fully digital workflow. The data acquisition will take place by scanning the patients using Medit intraoral scanner. Then, the scanned stls will be imported in 3shape software version 2024 and bite optimization module in it will be run. It automatically recalculates the position of the bite relation using its integrated AI. After that, the resulted STLs will be exported and re-imported to ExoCAD software to design the prostheses.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Sequential
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Before | Experimental | Procedure: BeforeThe recruited patients will be screened for proper bone architecture and CBCTs will be taken for proper virtual implant planning. Two implants will be placed in the edentulous span in all participants. All surgical steps will be held according to standard protocol. After the implant osseointegration period, the prosthetic phase will start with implant exposure and placement of multiunit abutments. After gingival healing, intraoral scans for the implants timing using abutment level scan bodies will be taken. Then, the fabrication of implant-retained fixed partial denture will be done with a fully digital workflow. |
| After | Active comparator | Procedure: AfterThe data acquisition will take place by scanning the patients using Medit intraoral scanner. Then, the scanned stls will be imported in 3shape software version 2024 and bite optimization module in it will be run. It automatically recalculates the position of the bite relation using its integrated AI. After that, the resulted STLs will be exported and re-imported to ExoCAD software to design the prostheses. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (8 listed)
- Patients with a unilateral mandibular distal extension area (Kennedy Class II partially edentulous mandibular arch) and who are indicated for the insertion of 2 implants.
- Fully dentate opposing maxillary arch or restored with a suitable, well constructed fixed prosthesis.
- The remaining teeth should be in good periodontal health, with no signs of inflammation or movement.
- The edentulous area should be covered by a healthy, firm mucoperiosteum, with no or minimal tissue undercut.
- Patient should be with class I occlusion.
Key exclusion criteria (4 listed)
- Patients with psychological or mental disorders.
- Patients with insufficient interarch space.
- Patients with parafunctional habits, such as bruxism.
- After the healing phase and exactly before the prosthetic phase, if the inserted implants showed any signs of peri-implantitis or aggressive crestal bone resorption, then this case will be excluded and replaced with another case.
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 |
|---|---|---|
| AfterThe data acquisition will take place by scanning the patients using Medit intraoral scanner. Then, the scanned stls will be imported in 3shape software version 2024 and bite optimization module in it will be run. It automatically recalculates the position of the bite relation using its integrated AI. After that, the resulted STLs will be exported and re-imported to ExoCAD software to design the prostheses. | Procedure or surgery | After |
| BeforeThe recruited patients will be screened for proper bone architecture and CBCTs will be taken for proper virtual implant planning. Two implants will be placed in the edentulous span in all participants. All surgical steps will be held according to standard protocol. After the implant osseointegration period, the prosthetic phase will start with implant exposure and placement of multiunit abutments. After gingival healing, intraoral scans for the implants timing using abutment level scan bodies will be taken. Then, the fabrication of implant-retained fixed partial denture will be done with a fully digital workflow. | Procedure or surgery | Before |
Primary outcome
Occlusal contact distribution
Time frame: From enrollment till the end of the study 17 weeks
The 1ry outcome will be assessed on the day of the prosthesis delivery. First, the reading of the occlusal contact distribution will be taken by using the T-scan device before seating the prosthesis intraorally. Then, the retained fixed prosthesis will be seated on the implant abutment, and the prosthetic screw will be screwed to the optimum torque. Another reading of the occlusal contact distribution will be taken by using the T-scan device after seating and torquing the prosthesis intraorally. Finally, the screw access channels will be closed by flowable resin composite material.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Jun 2026.
- Individual participant dataSharing planned: No
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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.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing After and Before in people with Partially Edentulous Mandible, 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 8 inclusion and 4 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: opening soon, as of the sponsor's last update on 18 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Noha Walid Barakat, Masters degree (+201149902334 ext. 002, noha.barakat@dentistry.cu.edu.eg), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Occlusal contact distribution (time frame: From enrollment till the end of the study 17 weeks). 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 18 Jun 2026.