The bundles run obliquely.They are attached in the cementum somewhat apically from their attachment to the bone.These fiber bundles are most numerous and constitute the main attachment of the tooth.

• 功能：斜行纤维能承受较大的咀嚼压力，起悬吊作用，主要承受垂直方向的压力，并使咀嚼压力均匀分布在整个牙槽骨上。