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Technical Brief

Computer-Aided Design and Manufacturing of a Novel Maxillofacial Surgery Instrument: Application in the Sagittal Split Osteotomy

[+] Author and Article Information
Erol Cansiz

Faculty of Dentistry,
Department of Oral and Maxillofacial Surgery,
Istanbul University,
İstanbul 34104, Turkey;
Ağız-Diş Çene Cerrahisi Anabilim Dalı,
İstanbul Üniversitesi Diş Hekimliği Fakültesi,
Fatih,
İstanbul 34104, Turkey
e-mail: erol.cansiz@istanbul.edu.tr

Fatih Turan

Faculty of Engineering,
Department of Mechanical Engineering,
Istanbul University,
İstanbul 34104, Turkey;
Mühendislik Fakültesi Makine Mühendisliği Bölümü, İstanbul Üniversitesi,
34320, Avcılar,
İstanbul 34104, Turkey
e-mail: fatihturan@istanbul.edu.tr

Yunus Ziya Arslan

Faculty of Engineering,
Department of Mechanical Engineering,
Istanbul University,
İstanbul 34104, Turkey;
Mühendislik Fakültesi Makine Mühendisliği Bölümü,
İstanbul Üniversitesi,
34320, Avcılar,
İstanbul 34104, Turkey
e-mail: yzarslan@istanbul.edu.tr

1Corresponding author.

Manuscript received January 5, 2016; final manuscript received July 2, 2016; published online August 24, 2016. Assoc. Editor: Carl Nelson.

J. Med. Devices 10(4), 044505 (Aug 24, 2016) (4 pages) Paper No: MED-16-1005; doi: 10.1115/1.4034297 History: Received January 05, 2016; Revised July 02, 2016

Mandibular sagittal split osteotomy (SSO) is an operation performed for the correction of mandibular deformities. In this operation, sharp rotary tools are used during osteotomies and this can induce some complications. For example, if the inferior alveolar nerve is damaged, paralysis of the teeth, the lateral side of the tongue, and the corner of the lip can occur. To decrease the occurrence of such possible complications, we designed and manufactured a novel computer-assisted, patient-specific SSO guide and soft tissue retractor in our previous study. And, we first tested this apparatus on a cadaveric bone in vitro. Now, in this study, a surgical application of the instrument, which was designed and manufactured according to the requirements of the mandibular sagittal split osteotomies, was performed. This paper gives and discusses the results obtained from in vivo application of the apparatus.

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References

Figures

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Fig. 1

Sagittal split osteotomy line specified onto the three-dimensional model of the patient's mandible

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Fig. 2

The designed sagittal split osteotomy guide and soft tissue retractor

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Fig. 3

Different views of the instrument placed on the mandible

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Fig. 4

Detailed views of the retractors designed to protect the inferior neurovascular bundle

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Fig. 5

Manufactured instrument by laser sintering technology

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Fig. 6

Application of the instrument during the sagittal split osteotomy

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Fig. 7

Different views of the sagittal split osteotomy performed using the novel instrument. Rotary instrument follow the osteotomy line guided by the proposed device.

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