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Marginal Bone Changes in Fixed All-on-Four Mandibular Prosthesis Using OT Bridge Attachment System

RecruitingNAAges 40 Years - anyAllCairo University
NCT05924386 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

Group I (control) Edentulous mandible receiving all on four fixed mandibular prosthesis using conventionally screw retained multiunit abutments. Group II (intervention) Edentulous mandible receiving all on four fixed prostheses using OT bridge attachments system. For both groups, the implant sites will be prepared aided by the surgical template. 4 implants with length 11-13 mm will be placed, two anterior implants will be aligned in an axial orientation and two posterior implants will be distally aligned according to the all-on-four concept in the inter foraminal area. Implants will be ideally placed at bone level. For both groups: After implant placement and surgical guide removal, healing abutments ( will be connected during healing periods (eight to twelve weeks). Group I ( control) After eight to twelve weeks from implant placement, multiunit abutments with appropriate heights a

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📋 Eligibility rules (as published)
Inclusion Criteria: Patients with completely edentulous patients * Aged 40 years or older. * Sufficient inter -arch space not less than 13 mm. * Good oral hygiene * Minimum bone height 10 mm and minimum bone diameter should be 6 mm Exclusion Criteria: * General contraindications for oral surgery * Heavy smokers (greater than 20 cigarettes a * Local acute or chronic infections * Substance abuse (drugs or alcohol) * Patients with neuromuscular or psychiatric disorders. * Treatment with intravenous bisphosphonates * Irradiation of the neck or head area in the past 5 years * Diabetic patients (HbA1c\>7.5%)
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What it tests

  • patients reciveing all on 4 fixed mandibular prosthesis usimg conventionally screw retained multiunit abutments
  • all on 4 fixed mandibular prosthesis using OTbridge attachment system
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Where

2 sites
Faculty of Oral and Dental Medicine, Cairo University
Cairo, Egypt
Faculty of Oral and Dental Medicine, Cairo University
Cairo, Egypt
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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