An interventional study of Augmentation of horizontal deficient anterior maxilla with a cortical shell harvested from a chin and Augmentation of horizontal deficient anterior maxilla with a cortical shell harvested from a chin using patient specific surgical guide then positioned with another guide in Alveolar Bone Resorption and Horizontal Ridge Deficiency, sponsored by Future University in Egypt. Completed at 1 site in Egypt. Open to participants aged 20 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-02-15.
Sponsored by Future University in Egypt · Not applicable, Interventional, and Treatment
this study aims to evaluate horizontal bone augmentation achieved at the anterior maxilla using computer-guided cortical shell bone technique and accuracy of fixation of the bone shell away from the atrophic ridge by a calculated distance which is always a challenging step for inexperienced surgeons to fix a cortical shell at the ideal position in the conventional protocol it was never guided to be precisely fixed at the proper position and angulation the problem is if it fixed with insufficient distance with proposed volume loss leads to totally insufficient volume gain for future implant placement also to evaluate the efficacy of the CAD/CAM surgical guide during chin harvesting procedures in reducing the risk of anatomical structure damage and patient morbidity with more accuracy compared with the standard technique. this trial versus free hand conventional cortical shell bone technique both harvested from symphysis area (chin).
Tooth extraction may be due to a variety of causes such as badly decayed, periodontal disease, and trauma whatever the reason tooth loss is always followed by loss of masticatory force and muscle stimulation to the alveolar bone so according to Wolff's Law (Wolff, 1892) loss of mechanical stimulation is followed by the reduction of bone mass.
Several surgical protocols have been used to manage horizontal maxillary alveolar bone atrophy such as bone splitting and bone spreading techniques with or without filling the created space, onlay bone graft, guided bone regeneration using resorbable or non-resorbable membrane, distraction osteogenesis, and shell bone block technique which use a thin cortical bone shell to reshape the atrophied ridge and protect the particulate bone graft.
Despite the popularity of this technique, it usually requires high surgical skills, prolonged intra-operative time, and unfortunately has some technical drawbacks. Such as lack of anatomical guidance during bone harvesting which may lead to injury to the important vital structure and lack of guidance during fixation may lead to improperly positioned, tilted, or rotated shell or even leaving an undesired distance between the shell and deficient ridge
With the increasing use of cone-beam computed tomography (CBCT), intra and extra oral scanner for patient data acquisition, and complete digital workflow in clinical practice and it is rapidly becoming the standard of care in dentistry. Regarding bone augmentation as preparation for future implant placement. computer-aided surgery has been an innovation that enables clinicians to have firm and accurate treatment planning. Also, milling or 3D printing methods allow variable techniques for the fabrication of surgical templates.
This study aims to fully digitalize such technique using patient-specific surgical guides to allow for accurate graft harvesting and positioning and to minimize intraoperative time and complications associated with this procedure
153 studies on the registry are indexed under Bone Resorption; 25 are open to participants now.
This study's enrollment of 14 is below the median of 22 across 133 interventional studies indexed under Bone Resorption.
Browse Bone Resorption studies →Future University in Egypt is the lead sponsor of 97 studies on the registry; 26 are open to participants now.
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Exclusion Criteria:
a patient-specific guide was used to harvest a chin cortical shell which was also prepared and positioned at the (anterior horizontally atrophied maxilla) recipient site using another patient-specific positioning guide.
Procedure: Augmentation of horizontal deficient anterior maxilla with a cortical shell harvested from a chin using patient specific surgical guide then positioned with another guide
the horizontally atrophic anterior maxilla was augmented with a cortical shell technique the bone was harvested from the chin without a patient-specific guide.
Procedure: Augmentation of horizontal deficient anterior maxilla with a cortical shell harvested from a chin
Augmentation of horizontal deficient anterior maxilla using the conventional protocol of cortical shell technique
using a patient-specific surgical guide to harvest bone cortical shell from the chin and another patient-specific surgical guide to fix it in the atrophied maxillary anterior area
Alveolar ridge horizontal net bone gain
volumetric change of deficient alveolar ridge after augmentation
Time frame: 4 months
surgical procedure accuracy
depening on the superimposition between immediate postoperative CBCT scan over planning
Time frame: immediate post operative
intraoperation time
duration of surgery
Time frame: at time of surgery
Plan to share: Undecided — the data will be available from the corresponding author upon resonable request.
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This study is completed, as verified in Feb 2023. You cannot join it, but the record below documents what was studied.
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Future University in Egypt