Crestal Bone Changes Following Equi-crestal Versus Subcrestal Implant Placement
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age21-60
SponsorMisr International University
About this trial
Statement of problem: The stability of peri-implant bone is a crucial factor for the long-term success of dental implants, where crestal bone plays a significant role in both the primary as well as the long- term implant stability. A bone loss of 1.5 mm during the first year of loading has been acceptable according to the early standards. However, more bone stability can be expected with the development in implant designs and surfaces over the past decades.
Aim of the study: the aim of this study is to radiographically assess the crestal bone changes following delayed implant placement in mandibular previously augmented posterior sites, comparing cases with equicrestal implant placement with subcrestal implant placement
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Patients older than 21 years.
Patients having augmented (by 50/50 particulate xenograft and autogenous bone) edentulous posterior site with vertical bone height of > 10 mm in the mandible with a width of ridge ≥ 7 mm
Adequate Inter-arch space for implant placement
Favorable occlusion (no traumatic occlusion).
Disqualifiers
Patients with inadequate bone volume and/ or quality
Patients with remaining roots or with signs of acute infection related to the area of interest.
Patients having systemic conditions that interfere with normal wound healing
Patients with habits that may jeopardize the implant longevity and affect the results of the study such as parafunctional habits .
Trial design
Design model
Parallel
Treatments tested in this trial
Subcrestal implant placement
Procedure/SurgeryDelayed implant placement 2 mm subcrestally in missing mandibular posterior site.
Crestal implant placement
Procedure/SurgeryDelayed implant placement equicrestally in missing mandibular posterior site.
Treatment groups
28 Participants
are divided into 2 treatment groupsGroup A: Subcrestal implant placementActive comparator 1 intervention
Group B: Crestal implant placementActive comparator 1 intervention
Trial outcomes
Primary outcomes
1
Crestal bone changes
Periapical digital radiographs to determine the amount of crestal bone lose in mm
Time frame
at baseline,3, 6 ,12 and 18 monthsSecondary outcomes
1
Keratinized tissue width
Keratinized tissue width using periodontal probe in mm
Time frame
at baseline, 3,6,12 and 18 months2
Patient satisfaction
Questionnaire
Time frame
at baseline, 6 ,12 and 18 monthsSponsors and contacts
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Source ClinicalTrials.gov