- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01836744
Survival Rate of Dental Implants Placed in Sinus Lift Performed With Two Different Grafts
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The study will be performance in 12 patients submitted to a bilateral sinus lift procedure.
Six months after the bilateral sinus lifting performed in a randomly way, using as graft materials (100% of autologous bone graft or 100% of xenograft), will be placed 1 to 3 implants in each maxillary sinus.
Wait more six months to expose the implant. At the end of 13 months after implant placement it should be in charge.
Implant placement (6 months after sinus lift procedure):
- Both sides should be treated during the same session.
- Patients will receive 2g Amoxicillin one hour before the procedure. Patients allergic to penicillin will be given Clindamycin 600 mg 1 hour before implant placement procedure.
- Patients will rinse for 1 minute prior to flap elevation with 0.12% chlorhexidine mouthwash.
- After delivery of local anaesthesia, incision and flap elevation, the recommendation of the various implant manufacturers will be followed for placing 1 to 3 implants 9-11 mm long per posterior upper (premolar-molar areas) below the maxillary sinus and a histological sample for each side will be collected.
- The neck of the implants will be placed flush to the bone and implants will be submerged under the soft tissues and flaps will be sutured.
- Baseline intraoral radiographs of the study implants have to be taken.
Post-implant placement instructions:
- Chlorhexidine mouthwash 0.12% for 1 minute twice a day for 2 weeks.
- Ibuprofen 400 mg will be prescribed to be taken 2-4 times a day during meals, but patients will be instructed not to take them in absence of pain. Patients with gastric problems or allergic to ibuprofen will receive paracetamol 1 g instead.
- Sutures will be removed after 10 days.
Abutment connection (6 months after implant placement):
- Both sides should be treated during the same session.
- Patients will rinse for 1 minute prior to flap incision with 0.12% chlorhexidine mouthwash.
- Mucosa can be punched or a flap will be elevated according to personal preference of the surgeon, it is important that both sides are treated in the same way.
- Individual implants will be tested for stability.
- Impressions will be taken.
- Healing abutments will be placed.
Post-abutment connection instructions:
- Chlorhexidine mouthwash 0.12% for 1 minute twice a day for 2 weeks.
- Ibuprofen 400 mg will be prescribed to be taken 2-4 times a day during meals, but patients will be instructed not to take them in absence of pain. Patients with gastric problems or allergic to ibuprofen will receive paracetamol 1 g instead.
- Sutures will be removed after 10 days.
Prosthetic phase:
- Within one month after abutment connection, implants will be manually tested for stability.
- Provisional reinforced acrylic restorations or definitive screw-retained or provisionally cemented (to allow implant stability assessment) metal-resin or metal-ceramic bridges rigidly joining the 2 or 3 implants will be delivered.
- Implants will be splinted under the same prosthesis, each implant supporting one tooth element.
- The connection of teeth with implants under the same prosthesis is not allowed.
- Similar procedures and materials have to be used in the same patient.
- The occlusal surface will be in slight contact with the opposite dentition.
- Intraoral radiographs and clinical pictures of the study implants will be taken at initial loading.
Maintenance:
- All patients will be recalled every 6 months after prosthetic loading for delivery of professional maintenance on individual basis.
- Dental occlusion will be evaluated at each maintenance visit.
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
-
-
Porto
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Oporto, Porto, Portugal, 4200-256
- University of Porto, Faculty of Dental Medicine
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Any partially edentulous patient having bilateral edentulism in the posterior maxillae (premolars and/or molars) with a similar degree of bone resorption requiring one to three implants at each side, being 18 years or older, and able to sign an informed consent. For all the potentially included patients preoperative CBCT (cone beam computed tomography) or CT scans and OPGs (orthopantomograph)must be obtained and attached to the files. The vertical bone height below the maxillary sinus at the implant sites must be of 1-5 mm and bone thickness at least 6 mm measured on CBCT (cone-beam computed tomography)or CT scans. Smokers will be included and patients will be grouped into: 1) non smokers; 2) light smokers ≤ 10 cigarettes/day; 3) heavy smokers ≥ 11 cigarettes/day, according to what they declare.
Exclusion Criteria:
- General contraindications to implant surgery.
- Patients irradiated in the head and neck area.
- Immunosuppressed or immunocompromised patients.
- Patients treated or under treatment with intravenous amino-bisphosphonates.
- Patients with untreated periodontitis.
- Patients with poor oral hygiene and motivation.
- Uncontrolled diabetes.
- Pregnancy or nursing.
- Substance abuser.
- Psychiatric problems or unrealistic expectations.
- Lack of opposite occluding dentition in the area intended for implant placement.
- Patients with an acute or chronic sinusitis.
- Patients participating in other trials, if the present protocol cannot be properly adhered too.
- Patients referred only for implant placement.
- Patient unable to be followed for 5 years after loading.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: survival rate autologous bone
dental implant placement in the previous sinus lift side with autologous bone; dental implant placement in the previous sinus lift side with xenograft material side;
|
Other Names:
|
Active Comparator: survival rate axenograft material
dental implant placement in the previous sinus lift side with xenograft material side;
|
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Histological and histomorphological analysis
Time Frame: 6 mounths
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Histological and histomorphological analysis of the bone graft
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6 mounths
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radiological analysis
Time Frame: 6 mounths
|
Comparation of the bone gain in a radiological analysis (initial and at 6 months)
|
6 mounths
|
Clinical evaluation - questionary
Time Frame: 6 mounths
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questionary about patient preference treatment
|
6 mounths
|
Implant failure
Time Frame: up to 5 years of loading
|
implant mobility assessed manually with the removed prosthesis and/or any infection dictating implant removal.
Assessments will be done at delivery of the provisional and definitive prostheses, 1, 3 and 5 years of loading by tightening the abutment screws with the removed prostheses.
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up to 5 years of loading
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Prosthesis failure
Time Frame: up to 5 years of loading
|
when prosthesis placement will not be possible due to implant failure or secondary to implant failure.
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up to 5 years of loading
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Peri-implant marginal bone level changes
Time Frame: up to 5 years
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Peri-implant marginal bone level changes assessed on periapical radiographs taken with the paralleling technique at implant placement, at initial prosthetic loading, 1 and 5 years follow-up in function. The distance between marginal bone level and implant/abutment junction, approximated to half mm, will be measured at both mesial and distal sides and averaged. Bone level changes at single implants will be averaged at patients level and then at group level. |
up to 5 years
|
Biological complications
Time Frame: up to 5 years
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Biological complications (number and type).
Particular attention will be used to assess possible sinus pathologies.
|
up to 5 years
|
Prosthetic complications
Time Frame: up to 5 years
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Prosthetic complications (number and type).
|
up to 5 years
|
Collaborators and Investigators
Investigators
- Principal Investigator: Francisco Correia, DDS, Msc, PhD, Universidade do Porto
- Study Director: Ricardo Faria Almeida, DDS, Msc, PhD, Universidade do Porto
- Study Chair: Antonio Campos Felino, DDS, PhD, Universidade do Porto
- Study Chair: Sonia Gouveia, Phd, Instituto de Engenharia Eletrónica e Informática de Aveiro (IEETA/UA) and Centro de I&D em Matemática e Aplicações (CIDMA/UA), Universidade de Aveiro (UA), Portugal
- Study Chair: Daniel H Pozza, DDS, PhD, Departamento de Biomedicina da Faculdade de Medicina, and Faculdade de Ciências da Nutrição e Alimentação, and I3s, Universidade do Porto, Porto, Portugal.
Publications and helpful links
Helpful Links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimated)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- D-2012-024
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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