Kitamura Naoki, Yamaguchi Kikue, Himi Kaiya, Ishii Kota, Munakata Motohiro
Department of Implant Dentistry, Showa Medical University Graduate School of Dentistry, 2-1-1, Kita-senzoku, Ota-ku, Tokyo 145-8515, Japan.
Department of Implant Dentistry, Showa Medical University School of Dentistry, 2-1-1, Kita-senzoku, Ota-ku, Tokyo 145-8515, Japan.
J Funct Biomater. 2025 Aug 28;16(9):312. doi: 10.3390/jfb16090312.
Implant treatment in the aesthetic regions of the jaw often requires hard and soft tissue augmentation to ensure optimal prosthetic outcomes. Radiological evaluation with cone-beam computed tomography (CBCT) and visual inspection of intraoral photographs are effective for assessing hard tissues but are limited in evaluating soft tissues. This study aimed to objectively evaluate volumetric and dimensional changes of the alveolar ridge, including both hard and soft tissues, following simultaneous horizontal bone augmentation and implant placement using intraoral digital scanning. Intraoral digital scans were obtained at baseline (T0) and at 2 (T1), 6 (T2), and 12 weeks (T3) post-surgery. Scans were superimposed using dedicated imaging software to measure volumetric and cross-sectional changes. Volumetric gain was significant at T1 but decreased significantly from T1 to T2 ( = 0.0006) and from T1 to T3 ( = 0.0002). Cross-sectional analysis showed significant increases in ridge width at T1 at all measured levels, accompanied by a significant vertical decrease at the alveolar crest from T1 to T2 ( = 0.0056) and T3 ( = 0.0106).These findings indicate that horizontal augmentation provides initial volumetric gain but is followed by substantial reduction at the crest, suggesting that rigid fixation may enhance stability; however, controlled clinical trials are required.
颌骨美学区域的种植治疗通常需要进行软硬组织增量，以确保获得最佳的修复效果。锥形束计算机断层扫描（CBCT）进行的影像学评估和口内照片的目视检查对硬组织评估有效，但在软组织评估方面存在局限性。本研究旨在通过口内数字扫描客观评估同期水平骨增量和种植体植入后牙槽嵴（包括硬组织和软组织）的体积和尺寸变化。在基线（T0）以及术后2周（T1）、6周（T2）和12周（T3）获取口内数字扫描图像。使用专用成像软件对扫描图像进行叠加，以测量体积和横截面变化。T1时体积增加显著，但从T1到T2（P = 0.0006）以及从T1到T3（P = 0.0002）显著减少。横截面分析显示，在所有测量水平上，T1时牙槽嵴宽度显著增加，同时从T1到T2（P = 0.0056）以及T1到T3（P = 0.0106）牙槽嵴顶垂直高度显著降低。这些发现表明，水平增量可提供初始的体积增加，但随后牙槽嵴顶会大幅减少，这表明刚性固定可能会增强稳定性；然而，仍需要进行对照临床试验。
