About this trial
thirty implants will be inserted in patients seeking implantation of their lost posterior maxillary teeth (premolar and molars) with limited bone height below the floor of the maxillary sinus, secondary to sinus pneumatization. The patients will be selected from those attending the outpatient clinic of the Oral \& Maxillofacial Surgery Department, Faculty of Dentistry, Mansoura University.
1. Clinical Evaluation
• Implant stability 2. Radiographic Evaluation Vertical bone gain (VBG)
Eligibility criteria
Qualifiers
Patent ostium of maxillary sinus.
Patient with missing one or more posterior maxillary teeth.
Residual bone height of 3-6 mm, measured from the crest of alveolar ridge to the floor of the maxillary sinus at the planned implant site.
A ridge width at the site of implantation of <5mm.
Disqualifiers
Active sinusitis, cyst, tumors or root tips at the planned surgical site.
Patients with systemic diseases that contra-indicate the surgical procedure such as uncontrolled diabetes mellitus, bleeding disorders, serious osseous disorders, and mental disorders.
Heavy smoking and alcoholism.
Parafunctional habits such as bruxism and clenching.
Trial design
Treatments tested in this trial
- lateral sinus lift with using allograft and collagen membrane
- lateral sinus lift with using exteneded platelet rich fibrin