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Case Reports
. 2021 Aug 1;39(4):482-488.
doi: 10.7518/hxkq.2021.04.017.

Guided bone regeneration-assisted orthodontic treatment for closing the space of missing central incisors

[Article in English, Chinese]
Lu-Yi Chen  1   2 , Min Huang  1   3 , Jia-Qi Wu  1   4 , Jun Luo  1
Affiliations
Case Reports

Guided bone regeneration-assisted orthodontic treatment for closing the space of missing central incisors

[Article in English, Chinese]
Lu-Yi Chen et al. Hua Xi Kou Qiang Yi Xue Za Zhi. .

Abstract
in English, Chinese

Long-term missing teeth can lead to alveolar bone loss in the edentulous area. Guided bone regeneration (GBR) is a bone augmentation method. It is widely used in clinical practice and broadens the indications of orthodontic treatment to a certain extent. This article reports a case of an adult patient with edentulous space in the maxillary central incisor, which was successfully closed through orthodontic treatment combined with GBR. This study will provide a re-ference for future clinical work.

个别牙长期缺失会导致缺牙区牙槽骨丧失，引导骨再生术（GBR）是骨增量的一种方法，临床应用广泛，一定程度上拓宽了正畸治疗的适应证。本文报告1例正畸治疗结合GBR关闭上颌中切牙缺失间隙的成年患者病例，为今后临床工作提供参考。.

Keywords: guided bone regeneration; incisor missing; space closure.

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Conflict of interest statement

利益冲突声明：作者声明本文无利益冲突。

Figures

图 1
图 1. 治疗前面像及口内像
Fig 1 Extraoral and intraoral view before treatment A：正面像；B：正面微笑像；C：侧面像；D：右侧formula image像；E：正面formula image像；F：左侧formula image像；G：上颌formula image像；H：下颌formula image像。
图 2
图 2. 治疗前全景片
Fig 2 Pretreatment panoramic radiograph
图 3
图 3. 治疗前CBCT三维重建
Fig 3 3D reconstruction image of CBCT before treatment A：上颌缺牙区矢状向截图；B、C：上颌缺牙区三维重建图。
图 4
图 4. 治疗前侧位片
Fig 4 Pretreatment lateral cephalogram
图 5
图 5. 初期排齐阶段
Fig 5 Initial alignment stage A：右侧formula image像；B：正面formula image像；C：左侧formula image像。
图 6
图 6. GBR手术过程
Fig 6 GBR procedure A：受植区去皮质骨化；B、C：植入微螺钉；D：填充骨粉，覆盖胶原膜；E、F：减张缝合。
图 7
图 7. 微螺钉取出过程
Fig 7 Microscrew removal process A：术区翻瓣；B：暴露微螺钉；C：取出微螺钉。
图 8
图 8. 剩余间隙关闭阶段
Fig 8 Remaining gap closure phase A：右侧formula image像；B：正面formula image像；C：左侧formula image像。
图 9
图 9. 治疗后面像及口内像
Fig 9 Extraoral and intraoral view after treatment A：正面像；B：正面微笑像；C：右侧面像；D：右侧formula image像；E：正面formula image像；F：左侧formula image像；G：上颌formula image像；H：下颌formula image像。
图 10
图 10. 治疗后全景片
Fig 10 Posttreatment panoramic radiograph
图 11
图 11. 治疗后CBCT三维重建
Fig 11 3D reconstruction image of CBCT after treatment A、B：水平向、矢状向上前牙唇侧高密度影截图；C：上前牙区三维重建图。
图 12
图 12. 治疗后侧位片
Fig 12 Posttreatment lateral cephalogram
图 13
图 13. 治疗前后头影测量描记重叠图
Fig 13 Superimposed cephalometric tracings of pretreatment and posttreatment 左：以前颅底（SN）平面做重叠；右：以上下颌骨做重叠。
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