Case Report
Copyright ©The Author(s) 2024. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Apr 26, 2024; 12(12): 2109-2115
Published online Apr 26, 2024. doi: 10.12998/wjcc.v12.i12.2109
Bone block from lateral window - correcting vertical and horizontal bone deficiency in maxilla posterior site: A case report
Yu-Lan Wang, Wen-Jun Shao, Min Wang
Yu-Lan Wang, Wen-Jun Shao, Min Wang, State Key Laboratory of Oral and Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei Province, China
Yu-Lan Wang, Wen-Jun Shao, Min Wang, Department of Oral Implantology, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, Hubei Province, China
Author contributions: Wang M contributed to surgical lead and manuscript revision; Wang YL contributed to surgical assistance, patient follow-up and manuscript writing; Shao WJ contributed to data collection, photo collection, and organization. All authors have read and approve the final manuscript.
Informed consent statement: The informed consent for treatment was signed before surgery.
Conflict-of-interest statement: All authors declare no conflict-of interest.
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).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See:
Corresponding author: Min Wang, PhD, Doctor, Department of Oral Implantology, School and Hospital of Stomatology, Wuhan University, No. 237 Luoyu Road, Wuhan 430079, Hubei Province, China.
Received: January 1, 2024
Peer-review started: January 1, 2024
First decision: January 16, 2024
Revised: January 29, 2024
Accepted: March 19, 2024
Article in press: March 19, 2024
Published online: April 26, 2024

Lateral window approach for sinus floor lift is commonly used for vertical bone augmentation in cases when the residual bone height is less than 5 mm. However, managing cases becomes more challenging when a maxillary sinus pseudocyst is present or when there is insufficient bone width. In this case, we utilized the bone window prepared during the lateral window sinus lift as a shell for horizontal bone augmentation. This allowed for simultaneous horizontal and vertical bone augmentation immediately after the removal of the maxillary sinus pseudocyst.


A 28-year-old female presented to our clinic with the chief complaint of missing upper left posterior teeth. Intraoral examination showed a horizontal deficiency of the alveolar ridge contour. The height of the alveolar bone was approximately 3.6 mm on cone beam computed tomography (CBCT). And a typical well-defined 'dome-shaped' lesion in maxillary sinus was observed on CBCT imaging. The lateral bony window was prepared using a piezo-ultrasonic device, then the bony window was fixed to the buccal side of the 26 alveolar ridge using a titanium screw with a length of 10 mm and a diameter of 1.5 mm. The space between the bony window and the alveolar ridge was filled with Bio-Oss, covered with a Bio-Gide collagen membrane, and subsequently sutured. Nine months later, the patient’s bone width increased from 4.8 to 10.5 mm, and the bone height increased from 3.6 to 15.6 mm. Subsequently, a Straumann® 4.1 mm × 10 mm implant was placed. The final all-ceramic crown restoration was completed four months later, and both clinical and radiographic examinations showed that the implant was successful, and the patient was satisfied with the results.


The bone block harvested from the lateral window sinus lift can be used for simultaneous horizontal bone augmentation acting as a shell for good two-dimensional bone augmentation.

Keywords: Sinus lift, Lateral window, Dental implant, Horizontal bone augmentation, Case report

Core Tip: The bone block harvested from the lateral window sinus lift as a shell for simultaneous horizontal bone augmentation can effectively address cases with insufficient bone height and width. This approach enables two-dimensional bone augmentation, leading to successful implant placement and restoration, as demonstrated in this case study.