| 摘要 |
A method of treating a dental periapical lesion at an apex of a tooth root canal, by accessing the dental periapical lesion via the root canal; and removing the dental periapical lesion via the root canal. In the described preferred embodiments, the dental periapical lesion is accessed via an opening made in the tooth crown leading to the root canal; and the dental periapical lesion is removed by passing a rotary ablating device through the tooth crown, the root canal, and the apex, into engagement with the periapical lesion, rotating the ablating device to ablate the dental periapical lesion, and removing debris produced by the ablation of the periapical lesion via the root canal.
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