Dynamic navigation system-guided trans-inferior alveolar nerve implant placement in the atrophic posterior mandible: A case report

doi:10.12998/wjcc.v10.i12.3907

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World Journal of Clinical Cases

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Case Report

World J Clin Cases. Apr 26, 2022; 10(12): 3907-3915
Published online Apr 26, 2022. doi: 10.12998/wjcc.v10.i12.3907

Dynamic navigation system-guided trans-inferior alveolar nerve implant placement in the atrophic posterior mandible: A case report

Liang-Wen Chen, Xiao-E Zhao, Qi Yan, Hai-Bin Xia, Quan Sun

Liang-Wen Chen, Qi Yan, Hai-Bin Xia, Quan Sun, Department of Oral Implantology, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei Province, China

Xiao-E Zhao, Department of Special Care Clinic, Lanzhou Stomatological Hospital, Lanzhou 730000, Gansu Province, China

Author contributions: Chen LW contributed to treatment planning and manuscript drafting; Zhao XE contributed to treatment plan implementation and photo collection; Yan Q contributed to treatment plan implementation and manuscript revision; Xia HB contributed to treatment plan implementation; and Sun Q contributed to manuscript revision and treatment planning.

Supported by Clinical New Technology and New Business Project (2021), School and Hospital of Stomatology of Wuhan University.

Informed consent statement: The patient has given her written informed consent to publish the case (including publication of images).

Conflict-of-interest statement: The authors declare that they have no competing interests.

CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).

Corresponding author: Quan Sun, DDS, MD, PhD, Attending Doctor, Department of Oral Implantology, School and Hospital of Stomatology, Wuhan University, No. 237 Luoyu Road, Hongshan District, Wuhan 430079, Hubei Province, China. quan.sun@whu.edu.cn

Received: September 8, 2021
Peer-review started: September 8, 2021
First decision: November 19, 2021
Revised: November 23, 2021
Accepted: March 7, 2022
Article in press: March 7, 2022
Published online: April 26, 2022
Processing time: 225 Days and 1.9 Hours

Abstract

BACKGROUND

In atrophic posterior mandibular areas, where the bone height superior to the inferior alveolar nerve (IAN) is less than 6 mm, short implants are not applicable. Conventional alternatives such as IAN transposition and various alveolar bone augmentation approaches are technically demanding and prone to complications.

CASE SUMMARY

Computer-guided dynamic navigation implantation improves the accuracy, predictability, and safety of implant placement. This case report presents a dynamic navigation system-guided trans-IAN implant placement technique, which can successfully treat a posterior mandibular dentition defect when the bone height is only 4.5 mm. The implant was inserted into the buccal side of the IAN and was 1.7 mm away from the IAN. The implantation deviations were controlled within a satisfying range, and the long-term restoration outcome was stable.

CONCLUSION

Dynamic navigation system-guided trans-IAN implant placement might be a recommended technique for patients with extremely insufficient residual bone height and sufficient bone width in the posterior mandibular area.

Keywords: Dental implant; Dynamic navigation system; Insufficient bone height; Inferior alveolar nerve; Posterior mandible; Case report

Core Tip: In atrophic posterior mandibular areas, where the residual bone height (RBH) superior to the inferior alveolar nerve (IAN) is less than 6 mm, conventional operative treatments are no longer applicable. We present a computer-dynamic navigation system (CADNS) -guided trans-IAN implant placement technique, which successfully treat a posterior mandibular dentition defect when the bone height is only 4.5 mm, resulting with a satisfying implant-restoration. This case demonstrates a novel implantation solution taking advantage of the accuracy and safety of CADNS. CADNS-guided trans-IAN placement could be a recommended technique for patients with an extremely insufficient RBH but sufficient buccal bone width in the posterior mandibular area.