- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05670340
Effect of Bone-related and Soft-tissue-related Variables on the Marginal Bone Loss of Platform-matched and Platform Switched Dental Implants
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This prospective clinical trial is conducted at the Dental Clinic of the Faculty of Medicine of the University of Salamanca. The protocol was developed in accordance with the 1975 Declaration of Helsinki, and later approved by the Bioethics Committee of the University of Salamanca with the number (Ref:473/2020)
Before initiating any procedure, each patient received information about the study design and signed an informed consent. The subjects are recruited consecutively following the admission protocols of the Dental Clinic of the Faculty of Medicine of the University of Salamanca, Salamanca, Spain. The inclusion criteria are:
(1) Patients of legal age (>18 years); (2) in need of at least one maxillary or mandibular dental implant to be inserted in mature bone (more than 4 months after tooth extraction) in the posterior area (premolars and molars); (3) with good oral hygiene (plaque and gingival index ≤ 25%). The exclusion criteria included clinical conditions that contraindicated implant surgery, (1) patients with immunological alterations, pregnant and lactating, (2) heavy smokers > 20 cigarettes/day, (3) with the need for bone or soft tissue augmentations, (4) patients whose anatomy prevented the correct three-dimensional placement of the implant to perform prosthetically guided screwed restorations.
All implants were placed by an experienced implantologist following standard procedures and the manufacturer's recommendations. All implants were connected to a transmucosal abutment to heal in one-stage approach. Several variables were collected in this surgical phase (bone quality, implant stability, implant-bone level, mucosal thickness, keratinized mucosa width ...)
After 3 to 4 months of implant healing all the clinical parameters were reevaluated and the final impression will be used for the manufacturing of a porcelain-fused to metal screwed crowns.
Two types of data will be analyzed: Cross-sectional and longitudinal data. On the one hand, cross-sectional data included sociodemographic (sex and age), behavioral (smoking, oral hygiene..) clinical (antagonist, adjacent dentition, arch location, implant diameter and length, insertion torque values, bone density, implant-level...) and prosthetics (abutment and prosthetic profiles, interocclusal prosthetic space, cantilever lengths...).
On the other hand, the longitudinal variables were classified into 2 types, related to the gingival tissues and related to the surrounding bone. Regarding the gingival tissues these were the longitudinal variables assessed in different follow-up observations (at 3, 6 and 12 months): plaque and gingival index, keratinized mucosa width. Regarding the bone-related variables the implant stability by ISQ as well as the marginal bone position were also measured at 3, 6 and 12 months.
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Javier Montero, Professor
- Phone Number: 619429971
- Email: javimont@usal.es
Study Locations
-
-
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Salamanca, Spain, 37007
- Recruiting
- Javier Montero
-
Contact:
- JAVIER MONTERO, FULL PROFESSOR
- Phone Number: 1996 34 923 294 500
- Email: javimont@usal.es
-
Sub-Investigator:
- NORBERTO QUISPE LÓPEZ, ASSOCIATE PROFESSOR
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Patients of legal age (>18 years).
- With rehabilitation needs with 1 maxillary or mandibular implant in mature bone (more than 4 months after tooth extraction) in the posterior sector (premolars and molars).
- With good hygiene (plaque and gingival index ≤ 25%).
Exclusion Criteria:
- Medical conditions that contraindicated implant surgery.
- Patients with immunological alterations, pregnant and lactating.
- Heavy smokers > 20 cigarettes/day,
- Requiring bone augmentations or of soft tissues.
- Patients whose anatomy prevented the correct three-dimensional placement of the implant to perform prosthetically guided screw-retained restorations.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Swithed-platform
In this group the implants will be rehabilitated with a narrower emergence profile for the prosthetic rehabilitation.
|
The implant will be rehabilitated with a switched emergence profile
|
Active Comparator: Matched-platform
This the conventional approach in wich the prosthetic rehabilitation is matched with the implant-platform dimensions
|
The implant will be rehabilitated with a matched emergence profile
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in the Peri-implant Marginal Bone level
Time Frame: At baseline (reference), in comparison with 3, 6 and 12 months
|
The implant-bone level is assesssed radiographicly
|
At baseline (reference), in comparison with 3, 6 and 12 months
|
Change in the Implant stablity quotient
Time Frame: At baseline (reference), and in comparison with the 3 months follow-up
|
The ISQ is assesssed by Osstell
|
At baseline (reference), and in comparison with the 3 months follow-up
|
Change in the Gingival Thickness
Time Frame: At baseline (reference) and in comparison with the 3, 6 and 12 months follow-up
|
The gingival thickness will be assessed by measuring the keratinized region around implants with a periodontal probe and a thickness caliper
|
At baseline (reference) and in comparison with the 3, 6 and 12 months follow-up
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Estimated)
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
- Usal_2020_433
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
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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