Quantitative Assessment of the Edentulous Posterior Maxilla for Implant Therapy: A Retrospective Cone Beam Computed Tomographic Study
Quantitative Assessment of the Edentulous Posterior Maxilla for Implant Therapy: A Retrospective Cone Beam Computed Tomographic Study
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DOI：
10.1007/s12663-019-01236-7
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发表时间：
2020-03-01
影响因子：
0.9
通讯作者：
Bhatavadekar, Neel B.
中科院分区：
文献类型：
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作者：
Padhye, Ninad Milind;Bhatavadekar, Neel B.
目的拔牙后牙槽骨的水平和垂直方向的尺寸变化，特别是在上颌后牙区，由于牙槽骨吸收合并鼻窦炎。本回顾性研究的目的是使用锥形束计算机断层扫描（CBCT）定量评估上颌骨残留牙槽嵴。材料与方法对250个CBCT中349个无牙颌部位进行了评价。分别在矢状面和冠状面测量根尖冠状骨高度和颊腭嵴宽度。此外，还评估了无牙区窦底的平整度。结果112（55.45%）的摩尔和74前磨牙牙槽嵴宽度<6mm者占54.42%，磨牙占67.83%，磨牙占61 44.86%的前磨牙根尖冠高度<8mm，183个（54.14%）的前磨牙有斜窦底形态。结论：在高比例的无牙颌患者中，使用标准尺寸的种植体进行上颌后牙区的修复需要额外的增强手术。本研究强调了在植入手术前进行三维CBCT的必要性，以制定适当的治疗计划。
Aim Dimensional changes of the alveolar bone are often noted in horizontal and vertical planes as a sequel to tooth extraction, particularly in the maxillary posterior region due to alveolar bone resorption combined with pneumatization of the sinus. The aim of this retrospective study was to quantitatively assess the maxillary residual alveolar ridge using cone beam computed tomography (CBCT) scans. Materials and methods A total of 349 edentulous sites from 250 CBCTs were evaluated. The apico-coronal bone height and bucco-palatal crest width were measured in sagittal and coronal slices, respectively. Additionally, the obliqueness of the sinus floor at the edentulous sites was also evaluated. Results One hundred and twelve (55.45%) of the molar and 74 (54.42%) of the premolar sites had a horizontal ridge dimension < 6 mm, whereas 137 (67.83%) of the molar and 61 (44.86%) of the premolar sites showed an apico-coronal height < 8 mm. Furthermore, 183 (54.14%) of the evaluated sites had an oblique sinus floor morphology. Conclusion Additional augmentative procedures are thus required in a high percentage of the population at the edentulous maxillary posterior site for rehabilitation using a standard dimension implant. This study stresses on the need for a three-dimensional CBCT prior to implant surgery for proper treatment planning.