The aim of this study was to investigate the effect of bone augmentation simultaneous to implant removal on the prognosis of reimplantation at the same sites, providing recommendations for management strategies after failed implant removal.
1. Age greater than 18 years 2. Implant failure requiring removal 3. Plan to reimplant in the same site 4. Periodontal health, or stabilized periodontitis after treatment
1. Uncontrolled metabolic diseases 2. Taking medications that have an effect on bone metabolism 3. The implant has detached at the time of consultation 4. Do not consent to reimplant in the same site 5. Unwillingness to participate in the follow-up of this study 6. Other conditions that do not qualify for implant therapy
Parallel
bone augmentation simultaneous to implant removal
Procedure/SurgeryPlacement of bone substitutes in the socket simultaneous to implant removal, and reimplantation is performed after 6 months of healing.
Ridge Height (RH)
Two reference lines were established for the radiological analysis: the longitudinal axis of the implant and a line perpendicular to this axis and tangential to a reference point (sinus floor in the maxilla and mandibular base in the mandible).Ridge height (RH) in mm, defined as the distance between the tangential reference line and the most coronal point of the bone crest, assessed buccal (B-RH) and lingual (L-RH).
Ridge Width (RW)
Two reference lines were established for the radiological analysis: the longitudinal axis of the implant and a line perpendicular to this axis and tangential to a reference point (sinus floor in the maxilla and mandibular base in the mandible).Ridge width (RW) in mm, recorded at 1, 3, and 5 mm from the bone crest. In the event of discrepancy between the buccal and lingual bone crests, the most apical one was chosen as reference.
Bone Plate Thickness (BPT)
Two reference lines were established for the radiological analysis: the longitudinal axis of the implant and a line perpendicular to this axis and tangential to a reference point (sinus floor in the maxilla and mandibular base in the mandible).Bone plate thickness (BPT) in mm, assessed at 1, 3, 5, and 7 mm below the crest and measured buccal and lingual.
Bone Mineral Density(BMD)
Bone density in the socket 6 months after implant removal
Inserting Torque(IT)
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The Dental Hospital of Zhejiang University School of Medicine
Lead sponsor
Hospital of Stomatology, Wuhan University
Collaborator
Shanghai Stomotological Hospital
Collaborator
