Actively Recruiting
Radiographic Evaluation of Bone Height Changes Around Implants in Patients Treated With Delayed Loaded All on Four Technique
Led by Al-Azhar University · Updated on 2024-12-12
16
Participants Needed
1
Research Sites
52 weeks
Total Duration
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AI-Summary
What this Trial Is About
Researchers are evaluating bone height changes around different implant placements in patients receiving a type of dental restoration called the All on Four technique. The study compares two approaches: one using two front implants and two back implants tilted at a 30-degree angle, and another with back implants tilted at a 45-degree angle. The goal is to understand how these implant angles affect bone height using advanced imaging. All participants will receive upper complete dentures supported by soft tissue and a lower All on-4 screw-retained prosthesis. They will be split into two groups: Group I will get back implants tilted at 30 degrees, and Group II will have back implants tilted at 45 degrees, with both groups receiving two front implants placed straight. After three months of healing, the prostheses will be functionally loaded. Participants will visit the clinic after surgery, at denture insertion, and at 6 and 12 months follow-up for check-ups. Bone height around the implants will be assessed using cone beam CT scans at these times. The study tracks changes in bone height over one year to compare the effects of implant placement angles on bone health.
CONDITIONS
Brief Title
Evaluation of Bone Changes Around Implants in Patients Treated With All on Four
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Patients aged 50 to 65 years
- Ridges covered with firm mucosa free from inflammation or ulcers
- Adequate height and width of the residual alveolar ridge
- Free from metabolic or bone disorders contraindicating implant installation
- Sufficient inter-arch space
You will not qualify if you...
- Presence of oral or systemic diseases
- Xerostomia or excessive salivation
- Parafunctional habits such as bruxism or clenching
- Heavy smoking or alcohol use
- History of temporo-mandibular dysfunction
- Brain or psychiatric disorders affecting participation or outcomes
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Surgery day and initial recovery period
Participants undergo implant surgery where two axially placed anterior implants and two distally inclined posterior implants (either 30-degree or 45-degree angle) are placed, followed by immediate post-operative care.
1 surgical visit and several post-operative visits
Duration - 3 months
Participants wait for a healing period of three months before functional loading of the prosthesis.
Visits for healing assessment as needed
Duration - Up to 9 months
Participants receive the All on-4 screw-retained prosthesis and are functionally loaded with the implants.
Visits at denture insertion, 6 months, and 12 months for evaluation
Trial Site Locations
Total: 1 location
1
Al-Azhar University Girls Branch
Cairo, Nasr City, Egypt, 4450001
Actively Recruiting
Research Team
N
Noha T Kamel, Lecturer
R
Rehab A Soliman, Lecturer
How is the study designed?
Study Type
INTERVENTIONAL
Masking
DOUBLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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