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L- Shape Symphyseal Autogenous Bone Block for Alveolar Ridge Augmentation in Anterior Maxilla and Mandible

NCT05844540 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 11

Last updated 2023-05-06

No results posted yet for this study

Summary

the aim of this study was to assess both horizontal and vertical alveolar bone augmentation for sever atrophied anterior maxilla and mandible, using L- shape autogenous bone block harvested from the symphysis. eleven partially edentulous patients seeking horizontal and vertical alveolar bone augmentation in the anterior maxilla or mandible were included in this study. For each patient, autogenous bone block was harvested from the symphysis, trimmed to L-shape and used to augment the anterior maxilla or mandible horizontally and vertically. Horizontal and vertical bone gain was measured by CBCT immediate postoperative and at 6months after grafting.

Conditions

  • Atrophic Anterior Alveolar Ridge

Interventions

PROCEDURE

harvesting bone block

Under local anesthesia, a sulcular incision was performed between lower right and left second premolars with an oblique incision distal to each one. After that, a full thickness mucoperiosteal flap was elevated to expose the anterior mandible including the entire symphysis and both mental nerves. By using piezo-surgery unit (Surgic Touch, Woodpecker, China), a rectangular bone block was harvested from the symphysis about 8mm in depth and 2mm wider than the recipient site to allow for contouring. The bone cuts were performed 5mm far from the apices of the anterior teeth, mental foramina, and inferior border of the mandible. Finally, thin curved osteotomes was used to detach the bone blocks. The harvested bone block was trimmed to form L-shape block and kept in normal saline. After hemostasis, the flap was closed with 4/0 vicryl interrupted sutures.

PROCEDURE

Recipient site preparation

At the maxillary recipient site, after induction of local anesthesia, a mid-crestal incision that continued in the sulcus for two teeth on either side of the defect with bilateral oblique incisions were performed. After that, the full thickness mucoperiosteal flap was elevated. While for mandibular recipient site, it was the same flap used for harvesting symphyseal bone block. For both upper or lower recipient sites, perforations (bone marrow penetration) were done to the recipient site by using a fissure surgical bur. The L-shape block graft was trimmed to obtain optimal adaptation to the recipient site, then it was fixed to the residual ridge with two 1.5mm self-tapping titanium screws. After attaining graft stability, any sharp edges were smoothed and any gap between the graft and underlying alveolar bone was filled with particulate bone curetted from the donner site.

PROCEDURE

implant insertion

Implant insertion: After 6months, the surgical site was opened to remove fixation screws and insert dental implants, and the final restoration was done 4months after implant insertion.

Sponsors & Collaborators

  • Mansoura University

    lead OTHER

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2021-02-12
Primary Completion
2022-06-05
Completion
2022-08-21

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05844540 on ClinicalTrials.gov