Partial edentulism requiring fixed implant-supported prosthetic rehabilitation in posterior regions of the jaws. Oral Health
Conditions
Interventions
Participants will be randomly assigned to one of two groups in a 1:1 allocation ratio. In the test group, dental implants will be restored using multi-unit abutments supporting screw-retained fixed pr
Sponsors
Damascus University
Eligibility
Sex/Gender
All
Age
20 Years to 50 Years
Inclusion criteria
Inclusion criteria: 1. Participants must be in overall good systemic health. 2. Individuals presenting with partial edentulism (missing one or more posterior teeth) who require fixed, screw-retained, implant-supported prosthetic rehabilitation. 3. Adequate alveolar bone volume and quality corresponding to types D2–D3, as confirmed by cone-beam computed tomography (CBCT). 4. Sufficient vertical bone height at the proposed implant site to allow placement of standard-length implants without the need for bone augmentation. 5. Healthy oral soft tissues, free from active periodontal or mucosal disease. 6. Proper inter-arch space and occlusal relationship adequate for fabrication of a screw-retained restoration. 7. Non-smokers or light smokers, defined as individuals consuming fewer than 10 cigarettes per day. 8. Motivated and compliant patients willing to maintain good oral hygiene and attend all scheduled follow-up appointments for a minimum of 12 months. 9. Participants who have provided written informed consent after receiving a detailed explanation of the study procedures, benefits, and potential risks.
Exclusion criteria
Exclusion criteria: 1. Systemic medical conditions that contraindicate oral surgery or implant placement, such as uncontrolled diabetes, hypertension, coagulation disorders, or immunodeficiency. 2. Current or previous use of bisphosphonates, antiresorptive, or antiangiogenic medications known to affect bone metabolism or healing. 3. Heavy smoking, defined as consumption of more than 10 cigarettes per day, or the use of smokeless tobacco products. 4. History of alcohol dependence or substance abuse. 5. Pregnant or breastfeeding women at the time of recruitment. 6. Presence of untreated periodontal disease, oral mucosal lesions, or infection at or near the intended implant site. 7. Inadequate bone volume or poor bone density (types D1 or D4), or insufficient vertical or buccolingual dimensions preventing stable implant placement without bone grafting. 8. Previous bone grafting procedures or failed implants in the same anatomical site. 9. Parafunctional habits such as bruxism or clenching that may compromise implant stability or prosthesis integrity. 10. Malocclusion or unstable occlusion interfering with the proper alignment or function of screw-retained restorations. 11. Patients receiving long-term corticosteroid therapy or those with a history of head and neck radiotherapy. 12. Known allergy or hypersensitivity to titanium or any dental materials utilized in the study.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Marginal bone level changes around implants supporting screw-retained prostheses with either multi-unit or prefabricated abutments measured using standardized periapical radiographs using a paralleling technique and digital image analysis software at baseline (prosthesis delivery), 3 months, 6 months, and 12 months post-loading | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. Technical and mechanical complications: Incidence of screw loosening, fracture, or prosthesis movement recorded throughout the 12-month follow-up period. 2. Patient satisfaction: Evaluated using a visual analogue scale (VAS, 0–10) assessing comfort, esthetics, and masticatory function at 6- and 12-month follow-ups. | — |
Countries
Syria
Contacts
Public ContactJihad ;Zafin Abou Nassar ;kara beit
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Outcome results
None listed