Kawakami Shunsuke, Lang Niklaus P, Iida Takahisa, Ferri Mauro, Apaza Alccayhuaman Karol A, Botticelli Daniele
Department of Oral Implantology, Osaka Dental University, Osaka, Japan.
ARDEC Academy, Rimini, Italy.
J Investig Clin Dent. 2018 Nov;9(4):e12362. doi: 10.1111/jicd.12362. Epub 2018 Aug 24.
The aim of the present study was to evaluate dimensional variations of augmented sinus volumes after sinus floor elevation using a lateral approach placing the antrostomy close to the sinus floor or more cranially to it.
Twenty-four healthy volunteers in need of sinus floor elevation were included in the study. The lateral approach was adopted placing the antrostomy randomly either close to the level of the sinus floor (group A) or approximately 3-4 mm cranially (group B). Cone-beam computed tomography (CBCT) was done before surgery (T0) and after 1 week (T1) and 9 months (T2), and analyses on dimensional variations were performed.
CBCT of 10 patients per group were analyzed. At T1, the sinus floor was found to be elevated by 9.8 ± 2.1 mm in group A and 10.9 ± 1.9 mm in group B. At T2, shrinkage of 2.0 ± 1.7 mm in group A and 1.4 ± 2.5 mm in group B was observed. The area was reduced approximately 18-24% between T1 and T2. The sinus mucosa width increased by 4.3-5 mm between T0 and T1, and regained the original dimensions at T2.
The more cranial the antrostomy, the greater the augmentation height after 9 months.
本研究的目的是评估采用外侧入路，将窦口置于靠近窦底或更靠近头侧时，上颌窦底提升术后上颌窦增大容积的尺寸变化。
本研究纳入了24名需要进行上颌窦底提升的健康志愿者。采用外侧入路，将窦口随机置于靠近窦底水平（A组）或头侧约3 - 4毫米处（B组）。在手术前（T0）、术后1周（T1）和9个月（T2）进行锥形束计算机断层扫描（CBCT），并对尺寸变化进行分析。
每组分析10例患者的CBCT。在T1时，A组窦底提升9.8±2.1毫米，B组窦底提升10.9±1.9毫米。在T2时，观察到A组收缩2.0±1.7毫米，B组收缩1.4±2.5毫米。在T1和T2之间，面积减少了约18 - 24%。窦黏膜宽度在T0和T1之间增加了4.3 - 5毫米，并在T2时恢复到原始尺寸。
窦口越靠近头侧，9个月后的增大高度越大。
