An interventional study of Static Computer-Assisted Implant Surgery (CAIS) and Conventional Freehand Implant Placement in Dental Implant Placement, sponsored by Khadyjah Ali Ali Alrassas. Recruiting at 1 site in Yemen. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-11-02.
Sponsored by Khadyjah Ali Ali Alrassas · Not applicable, Interventional, and Treatment
This randomized clinical trial compares the accuracy of dental implant placement performed using a surgical guide with that achieved using the conventional freehand technique. Participants requiring dental implant placement are allocated to either guided implant placement or freehand implant placement. The postoperative position of the implants is compared with the virtually planned implant position using three-dimensional image superimposition. The primary objective is to determine whether the use of a surgical guide improves the positional accuracy of dental implant placement compared with the freehand approach.
This is the only study on the registry with Khadyjah Ali Ali Alrassas as lead sponsor.
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Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
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Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants assigned to this arm will undergo dental implant placement using a static computer-assisted implant surgery (CAIS) protocol with a digitally planned, tooth-supported surgical guide.
Procedure: Static Computer-Assisted Implant Surgery (CAIS)
Participants assigned to this arm will undergo conventional freehand dental implant placement following preoperative CBCT-based implant planning, without the use of a surgical guide during implant placement.
Procedure: Conventional Freehand Implant Placement
Dental implants will be placed using a digitally planned, tooth-supported static surgical guide. Implant osteotomy preparation and implant insertion will be performed according to a fully guided surgical protocol.
Dental implants will be placed using a conventional freehand surgical approach following preoperative CBCT-based implant planning, without the use of a static surgical guide during implant placement.
Angular Deviation of Dental Implant Placement
Angular deviation will be defined as the angle, expressed in degrees, between the longitudinal axes of the virtually planned and actually placed dental implants. The deviation will be determined by three-dimensional superimposition of the planned and postoperative implant positions.
Time frame: 1 month after implant placement
Three-Dimensional Deviation at the Implant Apex (mm)
The three-dimensional linear distance between the virtually planned and actual postoperative implant apex positions will be measured following three-dimensional superimposition. The deviation will be expressed in millimeters (mm).
Time frame: 1 month after implant placement
Three-Dimensional Deviation at the Implant Shoulder (mm)
The three-dimensional linear distance between the virtually planned and actual postoperative implant shoulder positions will be measured following three-dimensional superimposition. The deviation will be expressed in millimeters (mm).
Time frame: 1 month after implant placement
Mesiodistal Deviation at the Implant Shoulder
The mesiodistal positional deviation at the implant shoulder will be measured in millimeters (mm) by comparing the virtually planned and actual postoperative implant positions using three-dimensional superimposition. Positive values indicate distal deviation, whereas negative values indicate mesial deviation.
Time frame: 1 month after implant placement
Buccolingual Deviation at the Implant Shoulder
The buccolingual positional deviation at the implant shoulder will be measured in millimeters (mm) by comparing the virtually planned and actual postoperative implant positions using three-dimensional superimposition. Positive values indicate lingual deviation, whereas negative values indicate buccal deviation.
Time frame: 1 month after implant placement
Apicocoronal Deviation at the Implant Shoulder
The apicocoronal positional deviation at the implant shoulder will be measured in millimeters (mm) by comparing the virtually planned and actual postoperative implant positions using three-dimensional superimposition. Positive values indicate apical deviation, whereas negative values indicate coronal deviation.
Time frame: 1 month after implant placement
Mesiodistal Deviation at the Implant Apex
The mesiodistal positional deviation at the implant apex will be measured in millimeters (mm) by comparing the virtually planned and actual postoperative implant positions using three-dimensional superimposition. Positive values indicate distal deviation, whereas negative values indicate mesial deviation.
Time frame: 1 month after implant placement
Buccolingual Deviation at the Implant Apex
The buccolingual positional deviation at the implant apex will be measured in millimeters (mm) by comparing the virtually planned and actual postoperative implant positions using three-dimensional superimposition. Positive values indicate lingual deviation, whereas negative values indicate buccal deviation.
Time frame: 1 month after implant placement
Apicocoronal Deviation at the Implant Apex
The apicocoronal positional deviation at the implant apex will be measured in millimeters (mm) by comparing the virtually planned and actual postoperative implant positions using three-dimensional superimposition. Positive values indicate apical deviation, whereas negative values indicate coronal deviation.
Time frame: 1 month after implant placement
Plan to share: No — Individual participant data (IPD) will not be shared because no formal data-sharing plan was included in the approved study protocol. Study findings will be reported in aggregate form while maintaining participant confidentiality and privacy.
No publications or documents are linked to this record.
Started Jul 2025 (actual). Primary completion is estimated for Mar 2027, 20 months after the start.
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From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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