Standard Implants With Bone Regeneration vs Short Implants
Implant Complication, Bone Resorption
About this trial
This is an interventional treatment trial for Implant Complication
Eligibility Criteria
Inclusion Criteria:
- All the patients with a distal edentulism Kennedy -Applegate Class II in the posterior mandible or maxilla, with residual bone height from the top of the crest to the opposite landmark (the alveolar nerve for the lower and the sinus cavity for the upper) between 5 and 7 millimeters. The bone peak on the last tooth before the edentulous space must be positioned from 2 to 4 mm from the CEJ. (X-ray evaluation by periapical film on a Rinn Holder).
- All patients with at least 3 mm of keratinized tissue on the edentulous crest. In case of absence of this prerequisite, three months before the keratinized tissue is augmented by a ephytelium-connective tissue graft harvested from the palate.
- Patients with edentulous distal sites
Exclusion Criteria:
- Heavy smokers (more than 10 cigarettes /day)
- Patients with active periodontal disease: full mouth plaque index (FMPI > 20%) and Full mouth bleeding index (FMBI > 20%).
- Patients with less of 5 mm of bone width.
- Patients with systemic conditions or under prescription of medications that contraindicate oral surgery
Sites / Locations
- Clínica Odontológica de la Universitat de Valencia, Fundación Lluis AlcanyisRecruiting
Arms of the Study
Arm 1
Arm 2
Active Comparator
Experimental
Short implants
Bone regeneration with longer implants
2 or 3 implant 4-5 mm length and 4 mm diameter (Syra Short, Sweden & Martina, Padua, Italy) will be positioned. The healing cap will be immediately connected and a vycril suture will be done after soft tissue reflection.
A horizontal and vertical regeneration following GBR technique will be performed using not-resorbable PTFE titanium reinforced membrane (Cytoplast Osteogenics, US) fixed by titanium pins or miniscrews to ensure the perfect stability (Pro-fix, Cytoplast Osteogenics, US). The graft will be composed half autogenous bone harvested with a scraper (Meta, Firenze, Italy) by the same surgical site or by a second tunnel site in the mandibular ramus and half deproteinized bovine bone (Bio Oss Geislicht Pharma, Switzerland). The mucosal flaps will be sutured in a double layer with horizontal mattress and single gore-tex sutures (Cytoplast PTFE sutures 3.0, Cytoplast Osteogenics, US). 2 or 3 implant from 10 to 13 mm length putting the implant platform 2 or 3 mm apical to CEJ of the adjacent tooth will be inserted.