Tavelli Lorenzo, Barootchi Shayan, Majzoub Jad, Chan Hsun-Liang, Giannobile William V, Wang Hom-Lay, Kripfgans Oliver D
Department of Periodontics & Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA.
Biointerfaces Institute and Department of Biomedical Engineering, College of Engineering, Ann Arbor, MI, USA.
J Clin Periodontol. 2021 Apr;48(4):602-614. doi: 10.1111/jcpe.13424. Epub 2021 Feb 3.
To describe the application of power Doppler Ultrasonography (US) for evaluating blood flow at implant and palatal donor sites following soft tissue augmentation with the connective tissue graft (CTG).
Five patients exhibiting a peri-implant soft tissue dehiscence received treatment with a coronally advanced flap and corresponding CTG. Power Doppler US was used for assessing blood volume at baseline, 1 week, 1 month, 6 months and 12 months post-surgery for assessing blood-flow dynamics at the implant and palatal donor sites. The speed-weighted and power-weighted colour pixel density (CPPD) were computed from colour velocity (CV) and colour power (CP), respectively.
A mean increase in CV of 199.25% was observed at the midfacial region of the implant sites after 1 week compared to baseline. CV and CP were increased in all sites at 1 week and 1 month. At 6 and 12 months, the mean CV appeared lower than baseline at the implant sites. CCPD was increased at the palatal donor sites and at the great palatine foramen areas at the 1-week and 1-month post-operative evaluations.
Power Doppler US is a non-invasive and valuable tool for estimating tissue perfusion and CPPD variation during different phases of intra-oral soft tissue graft healing.
描述能量多普勒超声（US）在评估采用结缔组织移植（CTG）进行软组织增量术后种植体及腭部供区血流情况中的应用。
5例种植体周围软组织裂开患者接受了冠向推进瓣及相应CTG治疗。能量多普勒超声用于在术后基线、1周、1个月、6个月和12个月评估种植体及腭部供区的血容量，以评估血流动力学。速度加权和功率加权彩色像素密度（CPPD）分别根据彩色速度（CV）和彩色功率（CP）计算得出。
与基线相比，术后1周时种植体部位面部中部区域的CV平均增加了199.25%。术后1周和1个月时，所有部位的CV和CP均增加。在术后6个月和12个月时，种植体部位的平均CV低于基线。术后1周和1个月评估时，腭部供区及腭大孔区域的CCPD增加。
能量多普勒超声是一种无创且有价值的工具，可用于评估口腔内软组织移植愈合不同阶段的组织灌注及CPPD变化。
