- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05118815
Peri-implant Tissues on the Galimplant Anti-rotational Slim Abutment.
Characterization and Behavior of Peri-implant Tissues on the New Anti-rotational Slim Abutment Galimplant. Single-blind Randomized Multicenter Clinical Trial.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Throughout implantological history there have been many proposals and modifications in terms of anchorage system, shape, materials, etc. In this project we intend to compare a classic anti-rotational straight esthetic multi-position attachment with the new anti-rotational straight esthetic slim multi-position abutment.
This will hypothetically allow to increase the contact surface of the peri-implant connective tissue, increase the adhesion and sealing power, improve the biological width and consequently minimize the risk of peri-implant diseases such as mucositis and peri-implantitis.
In this regard, we must analyze the healing process of the peri-implant soft tissue after surgery, which will result in a stable peri-implant mucosa. After surgery, soft tissue healing around the transmucosal portion of an implant begins with the formation of a blood clot and the induction of an inflammatory process aimed at tissue formation and remodeling. If that soft tissue formation and remodeling is adequate, the healing process will result in an effective attachment mucosa around the transmucosal portion of the implant.
To obtain this adequate peri-implant mucosa, it is very important that a proper healing process takes place. This process includes the recruitment of inflammatory cells and a process of angiogenesis; and if both processes are correctly developed, all the phases of mucosal healing (hemostasis, inflammation, proliferation, and remodeling of the collagen matrix) will occur successfully.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Cintia M. Chamorro Petronacci
- Phone Number: 0034651011815
- Email: cintia.chamorro.petronacci@gmail.com
Study Locations
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A Coruña
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Santiago De Compostela, A Coruña, Spain, 15785
- Universidad de Santiago de Compostela
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Patients who meet all the inclusion criteria and none of the exclusion criteria will be informed verbally and in writing about the study and will sign the informed consent form provided for their participation.
- Systemic conditions favorable for the performance of oral surgical procedures (ASA I/II).
- Not to be completely edentulous
- Bilateral absence of at least two teeth (one per hemimaxillary) in the posterior area (from the first premolar to the second molar) with or without free distal ends.
- That do not require regenerative techniques
- That allow the placement of Galimplant implants of 4.5 or 5 mm in diameter in edentulous areas with mature bone of at least 3 months healing time
- With a prosthetic space of at least 8 mm.
- In case of odd absences, a slim abutment will be placed, being the group to be tested always in the majority.
Exclusion Criteria:
- Presence of any disease, condition or medication that may compromise the healing and/or osseointegration of dental implants (uncontrolled diabetes mellitus, immunosuppression, administration of bone modifying agents (BMA). Presence of any severe mental disorder, and patients who have received head and neck radiotherapy during the previous 18 months.
- Patients who do not have sufficient peri-implant keratinized gingiva to allow at least 1 mm of residual gingiva after excision of the tissue under study.
- Esthetic edentulous areas of 13-23, Implants with primary stability with ISQ < 50 or <40N, or with abutments that cannot receive torque at 30N are excluded.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Conventional straight esthetic abutment
After implant surgery, 30 patients will have a 3 mm high conventional straight esthetic abutment placed.
The implant placement will follow the manufacturer's instructions and the operator's expertise to achieve stability with an insertion torque of at least 40 N, recording the final torque with a calibrated torque wrench.
The implant will be placed whenever bone and gingival availability allows it, juxta-osseous to avoid collateral damage in the peri-implant perimetral soft tissue excision (donut).
The abutment will be placed at 30 N as indicated by the manufacturer.
After removal of the donut, a new abutment will be placed and left in place up to 3 months to allow healing and complete osseointegration.
Patients will receive prosthodontic loading following standard metal-ceramic rehabilitation protocols and the manufacturer's recommendation.
The prosthesis will be screw-retained, on the abutment placed after excision of the donut, screwed at 25 N.
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Use a standard abutment
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Experimental: Slim (New Slim) transepithelial abutment
After surgery, 30 patients will have a 3 mm high transepithelial New Slim abutment placed.
The implant placement will follow the manufacturer's instructions and the operator's expertise to achieve stability with an insertion torque of at least 40 N, recording the final torque with a calibrated torque wrench.
The implant will be placed whenever bone and gingival availability allows it, juxta-osseous to avoid collateral damage in the peri-implant perimetral soft tissue excision (donut).
The abutment will be placed at 30 N as indicated by the manufacturer.
After removal of the donut, a new abutment will be placed and left in place up to 3 months to allow healing and complete osseointegration.
Patients will receive prosthodontic loading following standard metal-ceramic rehabilitation protocols and the manufacturer's recommendation.
The prosthesis will be screw-retained, on the abutment placed after excision of the donut, screwed at 25 N
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Use a narrower abutment to see if they present a better biological seal.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Peri-implant mucosa located around conventional esthetic abutments and the new Slim Galimplant abutments
Time Frame: 3 months
|
To histologically and immunohistochemically compare the peri-implant mucosa through a sample of peri-implant mucosa by means of a section around the transepithelial abutment, obtaining a 1.5-2 mm sample that will be fixed in 10% formaldehyde and transferred to the University of Murcia for histological and immunohistochemical study.
The portion of peri-implant mucosa will be deparaffinised and two sections of 5 µm each will be obtained.
One, stained with HE and analysed with software Image J version 1.46, calculating the average of 25 thickness measurements for each of the samples.The other 5 µm section will be stained with Masson-Goldner trichrome as a birefringent stain to facilitate the accuracy of the study.
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3 months
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Inflammatory response rate
Time Frame: 3 months
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To compare the inflammatory response of the peri-implant mucosa located around conventional esthetic abutments and the new Slim abutments; by immunohistochemical quantification of T cells, B cells, macrophages, and PMNs.
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3 months
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Epithelial thickness and orientation of the collagen fibers
Time Frame: 3 months
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To compare the epithelial thickness and orientation of the collagen fibers of the peri-implant mucosa located around conventional and Slim abutments through a sample of peri-implant mucosa.
One of the sections will be stained with HE, and we will use Image J image analysis software version 1.46 (U.S National Insitutes of Health, Bethesda, USA), calculating the mean of 25 thickness measurements for each of the samples.
The other section will be stained with Masson-Goldner trichrome.
With this staining, the light intensity will be increased for viewing the samples with a polarised light microscope.
Collagen fibres aligned transverse to the direction of light propagation (parallel to the plane of section), will appear bright due to a change in the refraction of the existing light, whereas collagen fibres aligned along the axis of light propagation (perpendicular to the plane of section), will appear dark because no refraction occurs.
Each sample will be observed at 5X, 10X, and 20W.
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3 months
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Vascular density of the peri-implant mucosa
Time Frame: 3 months
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To analyze and compare the vascular density of the peri-implant mucosa located around conventional esthetic abutments and the new Slim abutments through a sample of peri-implant mucosa by means of a section around the transepithelial abutment, with a circular biopsy scalpel of 6 mm diameter designed ad hoc, obtaining a sample of 1.5-2 mm.
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3 months
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Remnant soft tissue and/or microorganisms
Time Frame: 3 months
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To determine and compare the presence of remnant soft tissue and/or microorganisms on the surface of conventional esthetic abutments and the new Slim abutments we will use the SEM (Oxford Instruments INCA 300 EDX System, Abringdon, Oxfordshire, UK), and images will be captured using Semafore software (Semafore, JEOL, Tokyo, Japan).
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3 months
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Mesial and distal marginal bone loss
Time Frame: 36 months
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To clinically compare mesial and distal marginal bone loss using standardized digital periapical radiographs with parallel technique.
Control at 12, 24 and 36 months.
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36 months
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Abutment stability
Time Frame: 3 months
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Basal and 3 months postimplantation measured by Implant Stability Quotient (ISQ).
|
3 months
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Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Mario Pérez-Sayáns, PhD, University of Santiago de Compostela
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- MC/TP/2021
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
- ANALYTIC_CODE
- CSR
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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