Status:
NOT_YET_RECRUITING
Crestal Bone Response to Narrow vs. Regular Tie-Base in Subcrestal Implants
Lead Sponsor:
Menoufia University
Collaborating Sponsors:
Mansoura University
Conditions:
Bone Loss
Eligibility:
All Genders
20-70 years
Phase:
NA
Brief Summary
This 24-month randomized clinical trial evaluates peri-implant marginal bone changes at subcrestal implants restored with narrow versus regular tie-base abutments. The study investigates whether narr...
Detailed Description
INTRODUCTION The preservation of supracrestal peri- implant soft tissues plays a crucial role in maintaining bone tissue stability.(1) In recent decades, it has been suggested that peri- implant margi...
Eligibility Criteria
Inclusion
- \*\*Inclusion Criteria
- Adults ≥18 years old.
- Single missing tooth in a posterior quadrant, bordered by adjacent natural teeth.
- Adequate bone volume to place implants 8.5-10 mm in length and 4 mm in diameter without the need for bone or soft tissue grafting.
- Presence of a natural tooth or an implant-supported fixed restoration as an antagonist.
- Good oral hygiene with a plaque index \<25%.
- Willing and able to comply with study procedures and follow-up schedule.
- Provided written informed consent.
- \*\*Exclusion Criteria
- Systemic conditions or medications affecting bone metabolism (e.g., bisphosphonates, corticosteroids).
- Untreated periodontitis, persistent oral infections, or poor oral hygiene.
- Metabolic bone diseases (e.g., osteoporosis, renal insufficiency, immunodeficiency, leukocyte dysfunction).
- History of head and neck radiotherapy.
- Physical or mental disability preventing adequate oral hygiene or compliance.
- Heavy smoking (\>10 cigarettes/day).
- Alcoholism or drug abuse.
- Pregnancy or breastfeeding.
- Bruxism or oral mucosal diseases.
- Need for bone regeneration procedures before implant placement.
- Inability or unwillingness to attend follow-up visits.
Exclusion
Key Trial Info
Start Date :
September 30 2025
Trial Type :
INTERVENTIONAL
Allocation :
ESTIMATED
End Date :
December 1 2028
Estimated Enrollment :
40 Patients enrolled
Trial Details
Trial ID
NCT07196228
Start Date
September 30 2025
End Date
December 1 2028
Last Update
September 29 2025
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