For alveolar bone grafting (ABG), we have been performing surgery using a technique in which a cortical bone lining iliac endplate is applied to the anterior nasal aperture inferior margin. Herein, we examined the postoperative bone-bridge morphology following ABG using conventional and cortical bone lining techniques.
Fifty-five unilateral patients who underwent ABG at our clinic from October 2012 to March 2019 were included. We used postoperative CT data to compare the labiolingual width of the grafted bone and anterior-posterior and vertical shapes of the nasal aperture inferior margin with respect to the ungrafted side.
The cortical bone lining technique was superior to the conventional method. Regardless of alveolar cleft width or oral-nasal fistula, the cortical bone lining technique showed good results. Also, tooth movement into the grafted area was involved in the maintenance of residual graft bone; however, the cortical bone lining technique had better results.
The cortical bone lining technique allows for the physical closure of nasolateral mucosal fistulas when it is technically difficult and can apply sufficient pressure to the bone marrow cancellous bone filling over the cortical plate bone. Our results illustrate the effectiveness of the cortical bone lining technique.
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Accepted: February 17, 2023
Received in revised form: February 13, 2023
Received: November 8, 2022
Publication stageIn Press Journal Pre-Proof
Funding: This work was supported by Grants-in-Aid for Exploratory Research (grant numbers 21K16955) from the Japan Society for the Promotion of Science (JSPS).
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