CClinicalTrials.gg
CompletedNCT04552132Updated Jun 15, 2023Results posted

Postoperative Pain and Healing in Teeth Treated With GentleWave or EndoActivator

An interventional study of Multisonic vs Sonic activation of irrigants in Symptomatic Irreversible Pulpitis and Apical Periodontitis, sponsored by St. Louis University. Completed at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-06-15.

Sponsored by St. Louis University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
63
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Patients with painful molars will be randomly assigned to 2 different groups: GentleWave and EndoActivator. The root canals will be completed using identical protocols except in the mode of delivery and activation of irrigation (using either the GentleWave or EndoActivator). Postoperative pain and pain pill consumption will be measured for the 4 days following their root canal using a Visual Analog Scale and Pain Pill Log, respectively. The alternative hypothesis is that patients undergoing treatment using the GentleWave will experience less pain postoperatively and will consume fewer pain pills.

A 12-month follow up with exam and radiographs will be completed to evaluate healing.

02

Conditions studied

  • Symptomatic Irreversible Pulpitis
  • Apical Periodontitis
03

In context

Periodontitis

1,635 studies on the registry are indexed under Periodontitis; 327 are open to participants now.

This study's enrollment of 63 is above the median of 45 across 1,191 interventional studies indexed under Periodontitis.

Browse Periodontitis studies →

Lead sponsor

St. Louis University is the lead sponsor of 152 studies on the registry; 17 are open to participants now.

Of its 19 completed or terminated interventional studies of FDA-regulated products, 15 (79%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Adults, able to provide informed consent, with restorable symptomatic molars reporting preoperative pain ≥20mm on a 100mm Visual Analog Scale (VAS) during the previous 24 hours.

Exclusion criteria

Exclusion Criteria:

  • Minors
  • Pregnant women
  • Prisoners
  • Persons unable to adequately provide informed consent
  • Non-restorable teeth
  • Patients unable to sit in the dental chair for 3 hours
  • Patients with compromised cardiac health requiring less than .08mg epinephrine
  • Patients with a pacemaker
  • Patients where Ibuprofen and Acetaminophen are contraindicated
  • Patients unable to swallow pills
  • Patients with pain originating somewhere other than the tooth in question
  • Patients having taken analgesics within previous 6 hours
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
63 participants (actual)

Study arms

  • Experimental
    GentleWave

    Patients randomly assigned to the GentleWave group will receive irrigation and activation of irrigants with the GentleWave device (multisonic energy) by Sonendo.

    Device: Multisonic vs Sonic activation of irrigants

  • Active comparator
    EndoActivator

    Patients randomly assigned to the EndoActivator group will receive irrigation via a side-vented needle and activation using the EndoActivator (sonic energy) by Dentsply Sirona.

    Device: Multisonic vs Sonic activation of irrigants

Interventions

  • DeviceMultisonic vs Sonic activation of irrigants

    Energy is input into the intracanal irrigants for activation in the hopes of increasing irrigant efficacy.

06

What researchers measure

Primary outcomes

  1. 24 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021

    Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

    Time frame: 24 hours post-operative

  2. 24 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022

    Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

    Time frame: 24 hr postoperatively

  3. 48 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021

    Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

    Time frame: 48 hours post-operative

  4. 48 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022

    Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

    Time frame: 48 hours post-operative

  5. 72 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021

    Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

    Time frame: 72 hour post-operative

  6. 72 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022

    Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

    Time frame: 72 hours post-operative

  7. 96 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021

    Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

    Time frame: 96 hours post-operative

  8. 96 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022

    Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

    Time frame: 96 hours post-operative

  9. Cone Beam Computed Tomography (CBCT) Healing Assessment

    Each tooth root was classified as healed (no periapical radiolucency), healing (periapical radiolucency educed in size), or diseased (periapical radiolucency same size or larger). Pre-operative vs. post-operative periapical health evaluated using radiographs to compare the size of periapical radiolucencies present pre-op vs post-op.

    Time frame: 12 month recall

  10. Clinical Tooth Healing Classification Based on Clinical Examination and Patient Report

    Teeth were classified as being clinically successful if the patient had no symptoms other than mild tenderness to percussion. Teeth were classified as failures if outside these parameters.

    Time frame: 12-month recall

Secondary outcomes

  1. Pain Pill Consumption for Patients Seen From 09/2021-06/2021

    Patients will be given 16 tabs of 600mg Ibuprofen and 16 tabs of 650mg Acetaminophen with instructions to take 1 pill every 6 hours as needed for pain. Patients will be given a Pain Pill Log to record each time they take a pill. The total number of pills consumed will be tabulated for each patient.

    Time frame: Patient to record on the Pain Pill Log each time that they take a pain pill during the 4 days following their root canal treatment.

  2. Pain Pill Consumption for Patients Seen From 07/2021-03/2022

    Patients will be given 16 tabs of 600mg Ibuprofen and 16 tabs of 650mg Acetaminophen with instructions to take 1 pill every 6 hours as needed for pain. Patients will be given a Pain Pill Log to record each time they take a pill. The total number of pills consumed will be tabulated for each patient.

    Time frame: Patient to record on the Pain Pill Log each time that they take a pain pill during the 4 days following their root canal treatment.

07

Results

Posted Jun 15, 2023

Participant flow

Participant flow — Overall Study
MilestoneGentleWaveEndoActivator
Started3132
Completed2629
Not completed53
Withdrew: Lost to follow-up43
Withdrew: Protocol violation10

Outcome measures

Primary24 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021

Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

Time frame:
24 hours post-operative
Reported as:
Mean · score on a scale
24 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021
score on a scaleGentleWaveEndoActivator
24 Hour Postoperative Pain for Patients Seen From 09/2020-06/202114.75 ± 17.9116.23 ± 27.93
Statistical analysis
  • GentleWave vs EndoActivator · Fisher Exact · p = 0.63
Primary24 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022

Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

Time frame:
24 hr postoperatively
Reported as:
Mean · score on a scale
24 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022
score on a scaleGentleWaveEndoActivator
24 Hour Postoperative Pain for Patients Seen From 07/2021-03/202212.86 ± 18.6517.00 ± 18.69
Statistical analysis
  • GentleWave vs EndoActivator · Fisher Exact · p = 1.00
Primary48 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021

Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

Time frame:
48 hours post-operative
Reported as:
Mean · score on a scale
48 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021
score on a scaleGentleWaveEndoActivator
48 Hour Postoperative Pain for Patients Seen From 09/2020-06/202112.58 ± 18.7111.73 ± 19.58
Statistical analysis
  • GentleWave vs EndoActivator · Fisher Exact · p = 0.63
Primary48 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022

Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

Time frame:
48 hours post-operative
Reported as:
Mean · score on a scale
48 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022
score on a scaleGentleWaveEndoActivator
48 Hour Postoperative Pain for Patients Seen From 07/2021-03/20226.86 ± 12.3510.07 ± 11.49
Statistical analysis
  • GentleWave vs EndoActivator · Fisher Exact · p = 1.00
Primary72 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021

Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

Time frame:
72 hour post-operative
Reported as:
Mean · score on a scale
72 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021
score on a scaleGentleWaveEndoActivator
72 Hour Postoperative Pain for Patients Seen From 09/2020-06/20217.46 ± 14.367.30 ± 13.14
Statistical analysis
  • GentleWave vs EndoActivator · Fisher Exact · p = 0.57
Primary72 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022

Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

Time frame:
72 hours post-operative
Reported as:
Mean · score on a scale
72 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022
score on a scaleGentleWaveEndoActivator
72 Hour Postoperative Pain for Patients Seen From 07/2021-03/20223.57 ± 4.895.86 ± 10.85
Statistical analysis
  • GentleWave vs EndoActivator · Fisher Exact · p = 0.60
Primary96 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021

Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

Time frame:
96 hours post-operative
Reported as:
Mean · score on a scale
96 Hour Postoperative Pain for Patients Seen From 09/2020-06/2021
score on a scaleGentleWaveEndoActivator
96 Hour Postoperative Pain for Patients Seen From 09/2020-06/20219.96 ± 19.987.53 ± 16.15
Statistical analysis
  • GentleWave vs EndoActivator · Fisher Exact · p = 1.00
Primary96 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022

Postoperative Pain will be measured by the patient placing a mark that they feel best represents their level of pain on a 100mm Visual Analog Scale with 'No Pain' on the left (at 0) and 'Worst Pain Possible' on the right (at 100).

Time frame:
96 hours post-operative
Reported as:
Mean · score on a scale
96 Hour Postoperative Pain for Patients Seen From 07/2021-03/2022
score on a scaleGentleWaveEndoActivator
96 Hour Postoperative Pain for Patients Seen From 07/2021-03/20221.57 ± 3.612.57 ± 3.63
Statistical analysis
  • GentleWave vs EndoActivator · Fisher Exact · p = 1.00
PrimaryCone Beam Computed Tomography (CBCT) Healing Assessment

Each tooth root was classified as healed (no periapical radiolucency), healing (periapical radiolucency educed in size), or diseased (periapical radiolucency same size or larger). Pre-operative vs. post-operative periapical health evaluated using radiographs to compare the size of periapical radiolucencies present pre-op vs post-op.

Time frame:
12 month recall
Reported as:
Number · roots
Cone Beam Computed Tomography (CBCT) Healing Assessment
rootsGentleWaveEndoActivator
Healed2424
Healing44
Diseased04
Statistical analysis
  • GentleWave vs EndoActivator · Chi-squared · p = 0.18
PrimaryClinical Tooth Healing Classification Based on Clinical Examination and Patient Report

Teeth were classified as being clinically successful if the patient had no symptoms other than mild tenderness to percussion. Teeth were classified as failures if outside these parameters.

Time frame:
12-month recall
Reported as:
Number · teeth
Clinical Tooth Healing Classification Based on Clinical Examination and Patient Report
teethGentleWaveEndoActivator
Success1212
Failure02
Statistical analysis
  • GentleWave vs EndoActivator · Chi-squared · p = .4993
SecondaryPain Pill Consumption for Patients Seen From 09/2021-06/2021

Patients will be given 16 tabs of 600mg Ibuprofen and 16 tabs of 650mg Acetaminophen with instructions to take 1 pill every 6 hours as needed for pain. Patients will be given a Pain Pill Log to record each time they take a pill. The total number of pills consumed will be tabulated for each patient.

Time frame:
Patient to record on the Pain Pill Log each time that they take a pain pill during the 4 days following their root canal treatment.
Reported as:
Mean · pills
Pain Pill Consumption for Patients Seen From 09/2021-06/2021
pillsGentleWaveEndoActivator
Pain Pill Consumption for Patients Seen From 09/2021-06/20215.08 ± 4.566.63 ± 7.63
Statistical analysis
  • GentleWave vs EndoActivator · t-test, 2 sided · p = 0.52
SecondaryPain Pill Consumption for Patients Seen From 07/2021-03/2022

Patients will be given 16 tabs of 600mg Ibuprofen and 16 tabs of 650mg Acetaminophen with instructions to take 1 pill every 6 hours as needed for pain. Patients will be given a Pain Pill Log to record each time they take a pill. The total number of pills consumed will be tabulated for each patient.

Time frame:
Patient to record on the Pain Pill Log each time that they take a pain pill during the 4 days following their root canal treatment.
Reported as:
Mean · pills
Pain Pill Consumption for Patients Seen From 07/2021-03/2022
pillsGentleWaveEndoActivator
Pain Pill Consumption for Patients Seen From 07/2021-03/20224.00 ± 3.824.93 ± 8.02
Statistical analysis
  • GentleWave vs EndoActivator · t-test, 2 sided · p = .70

Adverse events

Collected over Through study completion, an average of 10 months.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
GentleWave0/31 (0%)0/31 (0%)0/31 (0%)
EndoActivator0/32 (0%)0/32 (0%)0/32 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)GentleWaveEndoActivatorTotal
Mean44.33 ± 14.4043.44 ± 11.9843.87 ± 13.10
Sex: Female, Male
Sex: Female, Male(Participants)GentleWaveEndoActivatorTotal
Female201939
Male111324
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)GentleWaveEndoActivatorTotal
Count of participants——0
Region of Enrollment
Region of Enrollment(participants)GentleWaveEndoActivatorTotal
United States313263
Pre-operative pain
Pre-operative pain(score on a scale)GentleWaveEndoActivatorTotal
Mean66.00 ± 24.6770.80 ± 23.4568.50 ± 24.15
08

Study locations

1 site
  • Saint Louis University Center for Advanced Dental Education
    Saint Louis, Missouri 63104, United States
09

References and documents

Study documents

  • Protocol and statistical analysis plan · May 2, 2022

Documents are hosted by the registry — open the source record to download them.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 15, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04552132
Lead sponsor
St. Louis University
Responsible party
David Bingham, DDS (Endodontic Resident at the Center for Advanced Dental Education, St. Louis University) — Principal investigator
First posted
Sep 17, 2020
Start date
Sep 30, 2020
Primary completion
Mar 16, 2022
Completion
Mar 16, 2022
Results posted
Jun 15, 2023
Last update
Jun 15, 2023

Study contacts

David Bingham, DDS
principal investigator · Resident at the Center for Advanced Dental Education
Brian Judd, DDS
principal investigator · Resident at the Center for Advanced Dental Education

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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