Toto P D, Kollar J A, Gargiulo A W
Oral Surg Oral Med Oral Pathol. 1981 Sep;52(3):333-8. doi: 10.1016/0030-4220(81)90278-4.
Impaction of the gingival sulcus with elastic bands deforms the gingival sulcus, forming a surface for growth of bacterial plaque, compresses and causes necrosis of surface epithelium and the subjacent lamina propria. The teeth become extruded and make premature contact with their apposing teeth. During mastication, forces applied to extruded teeth probably contribute to their displacement, resulting in their mobility. An inflammatory process commences within 3 days and becomes clinically evident by 7 days. The gingival becomes red-magenta in color and is slightly hemorrhagic. Pockets 4 to 6 min. in depth form within 1 week and remain as long as the impacted substance occupies the space between the tooth and the sulcus epithelium. Removal of the impacted substance results in prompt repair, with complete restoration within 3 weeks. Such repair may be by an epithelial attachment rather than by a fibrous periodontal ligament.
用橡皮筋压迫龈沟会使龈沟变形，形成细菌菌斑生长的表面，压迫并导致表面上皮及下方固有层坏死。牙齿会伸长并与对颌牙过早接触。在咀嚼过程中，施加于伸长牙齿的力量可能促使其移位，导致牙齿松动。炎症过程在3天内开始，7天时在临床上变得明显。牙龈变为红紫色且有轻微出血。在1周内会形成深度为4至6毫米的牙周袋，只要压迫物质占据牙齿与龈沟上皮之间的间隙，牙周袋就会一直存在。去除压迫物质后会迅速修复，3周内完全恢复。这种修复可能是通过上皮附着而非纤维性牙周韧带。
