Pediatric Dentist in Private Practice, Denver, Colo., USA.
Dentist Anesthesiologist and Clinical Associate Professor, Department of Oral Medicine, Pathology, and Radiology, Indiana University, Indianapolis, Ind., USA.
Pediatr Dent. 2024 Jan 15;46(1):58-62.
Intraoral oxygen pooling during dental sedation, especially using supplemental oxygen, is associated with an increased risk of spontaneous perioperative fire. The purpose of this in vitro study was to examine the effectiveness of intraoral suctioning for reducing oxygen pooling to safe levels during a simulated dental procedure. Phase one: Twenty trials were completed for each of the three suctioning devices: high-volume evacuation (HVE), fixed tip saliva ejector (SE), and Yankauer suction (YS). Phase two: Twenty trials were completed for each of three suctioning scenarios: no suctioning and continuous suctioning for the HVE and SE. In phase one, the slope for change (decrease) in oxygen during suction was significantly larger for SE than HVE (P<0.001) and YS (P<0.001), but for HVE and YS were not significantly different. Mean oxygen levels during suction were significantly higher for SE than HVE (P<0.001) and YS (P<0.001). In phase two, oxygen increased faster for no suction than for SE and HVE (P<0.001) and increased faster for SE than HVE (P<0.001). Mean oxygen levels were significantly lower for HVE than for SE (P<0.001) and no suction (P<0.001), and significantly lower for SE than no suction (P<0.001). All three devices were effective for reducing intraoral oxygen concentration to acceptable levels during the procedure. The HVE was the most effective suction device for rapidly evacuating pooled intraoral oxygen.
口腔内氧气积聚在牙科镇静期间，特别是使用补充氧气，与自发围手术期火灾的风险增加有关。本体外研究的目的是检查口腔内抽吸在模拟牙科手术过程中降低氧气积聚到安全水平的有效性。 第一阶段：为三种抽吸设备（高容量抽吸器 (HVE)、固定尖端唾液喷射器 (SE) 和 Yankauer 抽吸器 (YS)）中的每一种完成了 20 次试验。第二阶段：对于 HVE 和 SE 的三种抽吸情况（无抽吸和连续抽吸）中的每一种，完成了 20 次试验。 在第一阶段，抽吸过程中氧气减少的斜率（下降）明显大于 SE 比 HVE（P<0.001）和 YS（P<0.001），但 HVE 和 YS 之间没有显着差异。抽吸过程中的平均氧气水平明显高于 SE 比 HVE（P<0.001）和 YS（P<0.001）。在第二阶段，与 SE 和 HVE（P<0.001）相比，无抽吸时氧气增加得更快，与 SE 相比，HVE 增加得更快（P<0.001）。与 SE（P<0.001）和无抽吸（P<0.001）相比，HVE 的平均氧气水平显着降低，与 SE 相比，无抽吸的平均氧气水平显着降低（P<0.001）。 三种设备在手术过程中均能有效降低口腔内氧气浓度至可接受水平。HVE 是快速排空积聚的口腔内氧气的最有效抽吸设备。
