Effect of two different instrumentation techniques on postoperative pain after root canal treatment of lower first and second molars.

Comparison of step down and crown down techniques on postoperative pain after root canal treatment of lower first and second molars with asymptomatic irreversible pulpitis: A randomized clinical trail.

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

IRCT

Registry ID

IRCT2015022221177N1

Enrollment

Unknown

Registered

2015-05-30

Start date

2014-09-21

Completion date

Unknown

Last updated

2018-02-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Postoperative pain of root canal therapy.. Unspecified pain.

Interventions

Intervention 1: Intervention: Root canal treatment using step down technique. In this instrumentation technique in the first step coronal two third of the canal shapes in the same way as crowndown t

Treatment - Other

Control: Root canal treatment using crown down technique. In this instrumentation technique larger files are first used in the coronal two thirds of the canals and then progressively smaller files ar

Intervention: Root canal treatment using step down technique. In this instrumentation technique in the first step coronal two third of the canal shapes in the same way as crowndown technique and th

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Inclusion criteria: patients who are more than 18 years old; pulp with asymptomatic irreversible pulpitis; normal periradicular condition; no systemic disease; tooth is restorable; root canal treatment can be done in one non emergency appointment. Exclusion criteria: patients who are under 18 years old; normal pulp condition; pulp with reversible pulpitis; pulp with symptomatic irreversible pulpitis; necrotic pulp; presence of periodontal ligament widening in radiographic picture; presence of periradicular or lateral radiolucency in radiographic picture; presence of periradicular or lateral radio opacity in radiographic picture; systemic disease; pregnancy; allergic to lidocaine; impossible to restore; presence of a crown before the procedure; needing two visit treatment; needing any extra procedure such as incision and drainage; absence of lip sign after administration of anesthesia; absence of bleeding after pulpal exposure; use of analgesics 24 hours before treatment; local anesthesia lasts for more than four hours after treatment; severe labial or lingual malpositioning making it difficult to achieve straight line access; two or more teeth needing root canal treatment on the same side; gastric disease.

Exclusion criteria

Exclusion criteria:

Design outcomes

Primary

Measure	Time frame
Postoperative pain of root canal treatment. Timepoint: Four, 12, 24, 48, 72 and 168 hours after treatment. Method of measurement: Visual Analogue Scale.	—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactAhmad Nouroloyouni

Tabriz University of Medical Sciences.

a.noorolouni@gmail.com+98 41 3335 5965

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026