Rajasuo A, Leppänen J, Savolainen S, Meurman J H
Valkeala Military Hospital, Finnish Defence Forces, Helsinki, Finland.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1996 May;81(5):526-32. doi: 10.1016/s1079-2104(96)80041-2.
Upper respiratory tract infections and tonsillitis and pharyngitis in particular increase the risk of lower third molar pericoronitis. The study was made to investigate clinical and microbiologic associations between pericoronitis and tonsillitis.
The subjects were 20-year-old Finnish male conscripts. Thirty-eight patients had tonsillitis without and 33 patients had tonsillitis with a symptom-free erupting lower third molar; 27 patients had pericoronitis but healthy tonsils. All subjects were examined clinically. Bacterial samples were taken from healthy and diseased tonsils and from healthy and diseased third molar pericoronal pockets. The microbes were classified morphologically with the use of a darkfield microscope.
Eighty-two percent of infected tonsils had deep crypts and 52% of them exudated pus compared with 36% (p < 0.001) and 0% (p < 0.001) in healthy tonsils, respectively. Infected lower third molars were less than half erupted and had on average 8.8 mm deep pericoronal pockets compared with pockets 5.5 mm deep recorded in symptom-free cases (p < 0.001). Spirochetes were more common in infected pockets than in symptom-free cases comprising 8.2% versus 3.0% of the total bacterial count (p = 0.044). Rods were more common in infected tonsils than healthy ones (8.9% versus 4.8%, p = 0.041).
There were similarities in morphologic microbiota of pericoronitis and tonsillitis. However, clinical findings of tonsils did not appear to link with the findings of third molars.
上呼吸道感染，尤其是扁桃体炎和咽炎，会增加下颌第三磨牙冠周炎的风险。本研究旨在调查冠周炎与扁桃体炎之间的临床和微生物学关联。
研究对象为20岁的芬兰男性应征入伍者。38例患者患有无下颌第三磨牙萌出症状的扁桃体炎，33例患者患有伴有下颌第三磨牙无症状萌出的扁桃体炎；27例患者患有冠周炎但扁桃体健康。所有受试者均接受临床检查。从健康和患病的扁桃体以及健康和患病的第三磨牙冠周袋中采集细菌样本。使用暗视野显微镜对微生物进行形态学分类。
82%受感染的扁桃体有深部隐窝，其中52%有脓性渗出物，而健康扁桃体的这一比例分别为36%（p<0.001）和0%（p<0.001）。受感染的下颌第三磨牙萌出不到一半，平均冠周袋深度为8.8mm，而无症状病例的冠周袋深度为5.5mm（p<0.001）。螺旋体在受感染的袋中比在无症状病例中更常见，占细菌总数的8.2%，而无症状病例中为3.0%（p = 0.044）。杆菌在受感染的扁桃体中比在健康扁桃体中更常见（8.9%对4.8%，p = 0.041）。
冠周炎和扁桃体炎的形态学微生物群存在相似之处。然而，扁桃体的临床发现似乎与第三磨牙的发现没有关联。
