Dad needs to have a root canal operation.

爸爸需要做牙根管治疗.

Objective To investigate root canal curvature in maxillary anterior teeth.

目的了解上颌前牙根管弯曲情况.

Objective: To analyze the effect of the change of the tapers on the stress and the distribution on the root canal wall resulting from after the root canal preparation on maxillary first premolar.

目的：分析上颌第一前磨牙根管预备后锥度变化对根管壁应力及其分布的影响。

Applied anatomy on shape and location of root canal orifice in maxillary first permanent molar.

上颌第一磨牙根管口形态、位置的应用解剖.

Objective To investigate root canal curvatures of human maxillary first premolars in buccolingual directions.

目的研究上颌第一前磨牙根管颊舌向的弯曲情况.

ObjectiveTo evaluate the clinical effects of two kinds of nickel-titanium instruments in root canal preparation.

目的评价使用两种镍钛器械预备磨牙根管的临床疗效。

The root canal treatment saved my tooth.

根管治疗拯救了我的牙齿。

The dentist suggested I get root canal therapy.

牙医建议我进行根管治疗。

Root canal therapy can help relieve tooth pain.

根管治疗可以帮助缓解牙齿疼痛。

Root canal therapy usually requires several visits.

根管治疗通常需要几次就诊。