TruNatomyおよびReciproc Blueを用いた単回根管治療における術後痛に対するグライドパス形成の影響：ランダム化比較試験

This study aimed to compare the effect of glide path preparation (manual versus mechanical) on postoperative pain following single-visit root canal treatment using two NiTi file systems (TruNatomy vs. Reciproc Blue).

A total of 140 asymptomatic, necrotic teeth indicated for primary root canal treatment were assigned to four equal groups (n = 35): Group IA: TruNatomy with TruNatomy Glider, Group IB: TruNatomy with manual #10/#15 K-files, Group IIA: Reciproc Blue with R-Pilot, and Group IIB: Reciproc Blue with manual #10/#15 K-files. Pain intensity was measured using a Visual Analog Scale (VAS) at 6, 12, 24, and 48 h after treatment. Patients also recorded the number of 400 mg ibuprofen tablets taken for pain relief.

At the 12-h mark, rotary instrumentation (Group I) resulted in significantly higher VAS scores compared to reciprocating instrumentation (Group II) (P = 0.033), specifically in Subgroup A (with engine-driven glide path; P = 0.033). No significant differences in pain were observed in the subgroups without a glide path. Analgesic consumption was similar across all the groups (P > 0.05).

Postoperative pain was comparable between rotary and reciprocating systems over a 48-h period. Reciprocating instrumentation showed slightly lower pain at 12 h. The glide path technique had no significant influence, offering flexibility in clinical practice.