Accuracy and application range of a splint integrated with a reference array and registration fiducial markers for mandibular navigation surgery in artificial skulls

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K18715
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 57060:Surgical dentistry-related
• Research Institution: Kobe City Medical Center General Hospital(First Clinical Division, Second Clinical Division, Third
• Principal Investigator: Yamamoto Shinsuke 地方独立行政法人神戸市民病院機構神戸市立医療センター中央市民病院(第1診療部、第2診療部、第3診療部, 中央市民病院, 医長 (20811566)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: ナビゲーション手術 / 低侵襲 / スプリント / 下顎

Outline of Final Research Achievements

Open- and closed-position splints were manufactured using five artificial skulls. The splints were set on each skull, and computed tomography (CT) scans were acquired. Using the Digital Imaging and Communication in Medicine data, CT-based planning involved the registration and numbering of the position of accuracy evaluation markers and registration fiducial markers. The planning data were then transferred to the Kick navigation system to evaluate the registration accuracy of the splint. The overall mean target registration errors (TREs) on the mandible of the open- and closed-position splints were 0.76 ± 0.35 and 0.75 ± 0.26 mm, respectively. The mean TREs of the operative and non- operative sides were 0.69 ± 0.22 and 0.87 ± 0.28 mm, respectively (p < 0.001). Mandibular navigation using a custom-made splint has high accuracy within the range of the entire semi-lateral mandible on the operative side.

Free Research Field

口腔外科学

Academic Significance and Societal Importance of the Research Achievements

スプリントを用いた下顎ナビゲーションは、手術側において高い精度を有した。本手法は、非侵襲的な下顎ナビゲーション手術（顎変形症手術や顎関節形成術、下顎の異物除去術、歯科インプラント埋入術、腫瘍摘出術等）において、広く臨床応用される可能性がある。