An interventional study of Angled Abutment and straight abutment in Immediate Dental Implants, sponsored by Cairo University. Completed at 1 site in Egypt. Open to participants aged 20 Years to 50 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-06-09.
Sponsored by Cairo University · Not applicable, Interventional, and Treatment
patients with fractured teeth in the esthetic area requiring immediate restoration will be recruited to the study. Immediate implants will be placed and patients will be restored either with straight or angled abutments. Implant failure will be measured.
A: General operative procedures:
The study will be explained in details to the eligible participants with all possible alternative treatment options and possible risk.
If a patient accepts the treatment, informed consent will be signed. Standard extra oral and intraoral examination will be carried out. Diagnostic charts will be filled including medical and past dental history.
The patient will choose a sealed envelope to determine the allocation group. Preliminary impressions will be taken. The tooth to be extracted will be trimmed from the cast and an ideal wax up will be done.
A hard vacuum stent 2 mm thickness will be constructed over the cast with the wax up for fabrication of the temporary crown later.
The patient will be imaged a cone beam computerized topography (CBCT). The acquired DICOM image will be assessed on blue sky software ®. All the cases must have adequate buccolingual bone, if not the patient will be excluded from the study.
The co-supervisor (MW) will inform the principle investigator (HF) with the allocation group.
The principle investigator (HF) will plan the case. The implants will be planned apical to socket depth to engage apical bone for better primary stability. Final implant position 3 dimensionally will be according to allocation group to allow for placement of either straight or angled abutment.
The guide will be exported from the software and printed.
Intra operative procedures:
Patients will administrate a prophylactic antibiotic 3 days ahead the surgery. The procedure will be carried out under local anesthesia under sterile conditions.
The remaining tooth will be extracted atraumatically using periotome for better bone preservation.
After tooth extraction, the socket will be curettaged and irrigated with copious saline till fresh bleeding from the socket is observed.
Surgical guide will be placed and checked for stability and drilling will be performed following instructions.
Before implant insertion, the prepared osteotomy will be lavaged thoroughly to remove any drill debris from the socket.
The implant will be placed and the insertion torque will be checked using manual torque wrench. Implants with insertion torque less than 35Ncm will not be loaded and will be excluded from the study.
Periapical radiographs will be taken to ensure proper seating of the implant. The abutment, whether straight or angled according to the allocation group, will be attached to the implant fixture.
The vacuum stent will be used to perform the temporary crown using autopolymerizing resin. The crown will be checked to be out of occlusion in centric and eccentric occlusion to avoid any premature contact and subsequent overloading. Then the crown will be cemented and excess cement will be removed using dental floss.
The patient will be called for follow up after 1 week for the first 3 weeks then at 1 month and 3 months.
Cairo University is the lead sponsor of 4,780 studies on the registry; 1,427 are open to participants now.
Of its 36 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
According to the allocation, the experimental group will receive an angled abutment on the immediately placed implant. A vaccum stent will be used to fabricate a temporary crown using tooth colored auto-polymerizing resin(structur 2 SC/ QM , VOCO GmbH, Germany)
Other: Angled Abutment
According to the allocation, the control group will receive on the immediately placed implant a Straight zero degree abutment . A vaccum stent will be used to fabricate a temporary crown using tooth colored auto-polymerizing resin(structur 2 SC/ QM , VOCO GmbH, Germany)
Other: straight abutment
virtual implants will be placed on a planning software allowing abutments to be placed at an angle to the implant. Teeth will be extracted at the surgery using periotome and implants will be placed using computer aided surgical guide. The angled abutment will be placed and a temporary crown material will be fabricated.
virtual implants will be placed on a planning software allowing abutments to be placed at straight to the implant. Teeth will be extracted at the surgery using periotome and implants will be placed using computer aided surgical guide. The straight abutment will be placed and a temporary crown material will be fabricated.
Implant failure
clinical observation
Time frame: 3 months interval
Plan to share: No
This study is completed, as verified in Jun 2020. You cannot join it, but the record below documents what was studied.
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Cairo University