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  • Title: Temporo-Parietal Flap Incorporated Into a Modified Osteo-Odonto Keratoprostheses Protocol for Longevity of the Dental Lamina.
    Author: Rao ACA, Toalster N, Moloney G, Webber S.
    Journal: Ophthalmic Plast Reconstr Surg; 2020; 36(2):202-206. PubMed ID: 31876677.
    Abstract:
    PURPOSE: To describe a novel pedicled temporo-parietal flap to delay laminar resorption in a modified osteo-odonto keratoprosthesis (MOOKP) and measure resorption of the dental lamina by an objective method. METHODS: A retrospective case series was performed on patients who received an osteo-odontokeratoprosthesis for Steven-Johnson-Syndrome. Surgeries were performed between October 2016 and November 2017 by the same surgical team (G.M. and S.W.). A modified temporo-parietal flap was incorporated into stage 1 of the MOOKP procedure. CT Scans were performed post op and on follow up. Volumetric evaluation was achieved by automated software analysis of 3D reconstructed CT images (Vitrea, Software Version 6.7.6, Cannon Medical Systems ANZ Pty Ltd). RESULTS: The procedure was performed in 3 eyes from 3 patients. Patients were followed up for stage 2 review at 9.6 months on average (22-55 weeks). One case was complicated by early postoperative hematoma of the buccal graft; however, this was managed conservatively. Another case required relaxing incisions at the time of flap creation due to increased vascularized collagenous tissue. On follow up, volume changes in the dental lamina were minimal. CONCLUSIONS: Loss of laminar volume can potentially jeopardize the success of the MOOKP, and consequently cause significant visual, graft or globe complications. The long-term success of this method needs further evaluation; however, initial results suggest a possible role for pedicle grafts in maintenance of the dental lamina. Furthermore, objective CT-based calculation of laminar volume may reduce inter-study variability and standardize comparison of techniques.
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