The purpose of this prospective clinical study was to compare in delayed and immediately placed implants, the marginal vertical bone loss at 4 sides of the implant (buccal, palatal, mesial and distal), as well as the buccal and palatal bone thickness reduction at 3 months after loading.
Twenty-four patients were consecutively selected and enrolled in this study based on the aforementioned exclusion and inclusion criteria. Clinical examination was done by a different clinician than the operator, and according to the treatment indication, patients were allocated to the delayed implant placement group (Control), or the immediate implant placement group (Test). Thus, 15 implants were placed in healed extraction sites and immediately temporized (Control group), and 15 implants were placed in immediate extraction sites with immediate temporization (Test group). Provisional acrylic crowns were prepared. All patients were placed on a prophylactic antibiotic regimen, starting one day prior to surgery as they were asked to take amoxicillin 500 mg; three times a day for 10 days or clindamycin 300 mg twice daily for 10 days for penicillin-allergic patients. For the test group, tooth extractions were carried out atraumatically using periotomes. In both groups, the implant site preparation was completed in compliance with the general surgical principles and protocols defined by the manufacturer and screw-shaped implants (UFII, DIO™) were inserted at no less than 35 Ncm. Temporary abutments were connected to the implants and torqued at 20 Ncm, and then temporary crowns were cemented on top of the abutments after checking and reducing occlusion to non-existent in both centric and lateral excursions.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
24
The surgical procedure was conducted under local anesthesia. Intrasulcular incisions were performed around the mesial and distal tooth to the implant recipient site. Buccal and palatal mucoperiosteal flaps were elevated. Tooth extractions were carried out atraumatically using periotomes. Implant site preparation was completed in compliance with the general surgical principles and protocols defined by the manufacturer and screw-shaped implants (UFII, DIO™) were inserted at no less than 35 Ncm. Final insertion torque (IT) was measured and recorded using a manual hand wrench (DIO™). Resonance frequency analysis (RFA) was performed using an Osstell device (Sävedalen, Sweden). For each implant, three Implant Stability Quotient (ISQ) readings were recorded by the same operator to calculate the mean ISQ, at implant placement (T0) and 3 months after implant insertion (T3) prior to final abutment torque and crown cementation. Absorbable interrupted 4.0 sutures were used for flap closure.
The surgical procedure was conducted under local anesthesia. Intrasulcular incisions were performed around the mesial and distal tooth to the implant recipient site. Buccal and palatal mucoperiosteal flaps were elevated, the implant site preparation was completed in compliance with the general surgical principles and protocols defined by the manufacturer and screw-shaped implants (UFII, DIO™) were inserted at no less than 35 Ncm. Final insertion torque (IT) was measured and recorded using a manual hand wrench (DIO™). Resonance frequency analysis (RFA) was performed using an Osstell device (Sävedalen, Sweden). For each implant, three Implant Stability Quotient (ISQ) readings were recorded by the same operator to calculate the mean ISQ. This was done at implant placement (T0) and 3 months after implant insertion (T3) prior to final abutment torque and crown cementation. Absorbable interrupted 4.0 sutures were used for flap closure.
Saint-Joseph University
Beirut, Lebanon
Change from baseline of marginal vertical bone level at 6 months
Marginal vertical bone level changes at 4 sides of the implant (buccal, palatal, mesial and distal) on Cone Beam Computed Tomography (CBCT) images
Time frame: Following procedure at day 0 (implant insertion) and 6 months (post-implantation)
Change from baseline of bone plate thickness at 6 months
Buccal and palatal bone thickness at 4 levels : 0 mm, 2 mm, 4 mm and 6 mm from the implant platform on CBCT images
Time frame: Following procedure at day 0 (implant insertion) and 6 months (post-implantation)
Change from baseline of implant stability quotient at 3 months
Measurements of implant stability quotient (ISQ) following implant insertion
Time frame: Following procedure at day 0 (implant insertion) and 3 months (post-implantation)
Record of insertion torque
Insertion torque value at implant placement
Time frame: Following procedure at day 0 (implant insertion)
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