Santhanakrishnan Muthukumar, Subramanian Vedavalli, Ramesh Nithyakalyani, Kamaleeshwari R
Faculty of Dental Sciences, Department of Periodontology, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India.
Department of Periodontology, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu, India.
Clin Cosmet Investig Dent. 2021 Nov 19;13:479-494. doi: 10.2147/CCIDE.S332687. eCollection 2021.
The purpose of this study was assessment of the changes in soft and hard tissues in the esthetic zone of maxilla following immediate implant placement (IIP) with and without the socket shield technique (SST) and placement of implants 4 months following socket preservation (DIP) in terms of alterations in crestal bone thickness (CBT) and soft tissue changes evaluated by means of pink esthetic scores (PES) following placement of implants in the esthetic zone of maxilla.
In the maxillary esthetic region, 75 dental implants were placed totally, with 25 implants each in the SST, IIP, and DIP groups. All participants were subjected to undergo CBCT for assessing the variations in thickness of crestal aspect of facial/buccal/labial alveolar bone (CBT). PES and PROMS (patient-related outcome measures) were assessed using VAS for pain threshold and esthetic satisfaction following implant placement and after 6th post-operative month.
The mean reduction in CBT showed a statistically significant difference between and within the groups, in comparison to IIP and DIP groups, which demonstrated an average reduction in CBT 0.4 ± 0.1 and 0.2 ± 0.1 at 6 months following implant placement, respectively. The SST group showed a significantly lesser reduction in CBT of 0.05 ± 0.02. However, the mean difference in PES within and among the groups showed no significant difference statistically at < 0.05. On comparison of individual scores of PES between the groups, the results showed significant difference statistically at < 0.001.
The SST group demonstrated minimal reduction in CBT and a superior PES at the end of 6 months compared with the IIP and DIP groups.
本研究旨在评估在上颌美学区即刻种植（IIP）时使用或不使用牙槽窝屏障技术（SST）以及牙槽窝保存4个月后种植体植入（DIP）后，软硬组织的变化，具体评估指标为种植体植入上颌美学区后嵴顶骨厚度（CBT）的改变以及通过粉色美学评分（PES）评估的软组织变化。
在上颌美学区共植入75颗牙种植体，SST组、IIP组和DIP组各植入25颗。所有参与者均接受CBCT检查，以评估面部/颊侧/唇侧牙槽嵴顶骨厚度（CBT）的变化。使用视觉模拟量表（VAS）评估种植体植入后及术后第6个月的疼痛阈值和美学满意度，以此来评估PES和患者相关结局指标（PROMS）。
与IIP组和DIP组相比，CBT的平均减少量在组间和组内均显示出统计学上的显著差异，IIP组和DIP组在种植体植入后6个月时CBT的平均减少量分别为0.4±0.1和0.2±0.1。SST组CBT的减少量显著较小，为0.05±0.02。然而，组内和组间PES的平均差异在P<0.05时无统计学显著差异。在比较各组PES的个体评分时，结果显示在P<0.001时有统计学显著差异。
与IIP组和DIP组相比，SST组在6个月末时CBT的减少量最小，且PES更高。
