Emshoff Rüdiger, Moschen Ivano, Oberrauch Andreas, Gerhard Stefan, Strobl Heinrich
Department of Oral and Maxillo-Facial Surgery, University of Innsbruck, Austria.
Dent Traumatol. 2008 Aug;24(4):416-21. doi: 10.1111/j.1600-9657.2008.00585.x.
Laser Doppler flowmetry (LDF) is a non-invasive method to assess pulpal blood flow (PBF). Dental fracture injuries have been associated with significant PBF reduction The purpose of this study was: (i) to evaluate whether the severity of outcomes of dental fracture injuries may be related to LDF measurements of PBF, and (ii) to investigate whether outcomes of dental fracture injuries may predict PBF levels. The relationship between outcomes and PBF measurements was analyzed in 72 permanent maxillary incisors of 52 consecutive dental trauma patients. The diagnostic outcome group comprised 72 incisors with a type I (absence of sensitivity, periapical radiolucency, and grey discoloration of crown) (n = 42), type II (loss of sensitivity) (n = 16), or type III (loss of sensitivity, periapical radiolucency, and/or grey discoloration of crown) diagnosis. At each session, when an injured permanent maxillary incisor was recorded, a contralateral homologous tooth was used as a control. An ordinal stepwise regression was completed to assess the degree of association between PBF measurements and diagnostic outcomes. A logistic regression analysis was used to compute the odds ratios for the outcome features for incisor non-injury controls vs two outcome groups: type II (n = 16) and type III (n = 14). PBF measurements that were significantly associated with more severe outcome were PBF levels of <or=6 perfusion units (PU) (106.70 odds ratio) (P = 0.000). Significant increase in the risk of a PBF level of <or=6 PU occurred with a type III outcome (32.49 odds ratio) (P = 0.004). PBF measurements were related to the severity of adverse outcomes. Diagnoses of treatment outcomes predicted the presence of specific PBF levels.
激光多普勒血流仪（LDF）是一种评估牙髓血流（PBF）的非侵入性方法。牙折损伤与牙髓血流显著减少有关。本研究的目的是：（i）评估牙折损伤的严重程度是否可能与牙髓血流的LDF测量值相关，以及（ii）研究牙折损伤的结果是否可以预测牙髓血流水平。对52例连续牙外伤患者的72颗上颌恒切牙进行了结果与牙髓血流测量值之间关系的分析。诊断结果组包括72颗诊断为I型（无敏感、根尖周透射区和牙冠灰色变色）（n = 42）、II型（敏感丧失）（n = 16）或III型（敏感丧失、根尖周透射区和/或牙冠灰色变色）的切牙。在每次记录受伤的上颌恒切牙时，将对侧同名牙作为对照。完成了有序逐步回归以评估牙髓血流测量值与诊断结果之间的关联程度。使用逻辑回归分析计算切牙未受伤对照与两个结果组（II型（n = 16）和III型（n = 14））的结果特征的比值比。与更严重结果显著相关的牙髓血流测量值是≤6灌注单位（PU）的牙髓血流水平（比值比为106.70）（P = 0.000）。III型结果时出现≤6 PU牙髓血流水平风险的显著增加（比值比为32.49）（P = 0.004）。牙髓血流测量值与不良结果的严重程度相关。治疗结果的诊断可预测特定牙髓血流水平的存在。
