Symptomatic Irreversible Pulpitis (SIP)Early Phase 1NCT07759349
Comparison Of Acetaminophen, NSAIDs, And Trypsin-Chymotrypsin Plus Acetaminophen For Post-Endodontic Pain After Single-Visit Root Canal Treatment
A Early Phase 1 study testing Acetaminophen, NSAID and trypsin-chymotrypsin in people with Symptomatic Irreversible Pulpitis (SIP), run by Dow University of Health Sciences at 1 site in Pakistan.
Trial summary
This randomized control trial will be planned according to PRIRATE 2020 guideline for reporting randomized trials in Endodontics. The protocol of this study will be multiple parallel arm, single blinded, randomized single centered clinical trial (allocation ratio 1:1) The study will be conducted after taking the… Read more about this study
- Who is it for?
- Ages 18 to 60 yearsHealthy volunteers can take part
- Conditions the study is for
- Symptomatic Irreversible Pulpitis (SIP)
- What is being tested?
- Acetaminophen, NSAID and trypsin-chymotrypsin
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 90 participants
- Where
- 1 sitePakistan
- Study dates
- 2 Aug 2026to 1 Dec 2026
- Phase
- Early Phase 1
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 60 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Both sex
- Healthy ( American Society of Anesthesiologists class 1)
- Age 18-60 years
- Pulpal diagnosis: Symptomatic irreversible pulpitis in mandibular premolar (single canal) periapical diagnosis: symptomatic apical periodontitis
- The ability of participants to understand a pain scale (VAS)
Who cannot join
- Pregnant females
- Systemic disease and immune deficiency
- Taken analgesics 24 hours, prior to treatment
- Non-vital, previously initiated, previously treated teeth
- Radiographic evidence of peri-radicular pathosis
- Teeth with cracks, fractures and history of trauma
Show all 9Show fewer
- Developmental anomalies and immature apices
- Allergic to local anesthetic solution or any experimental drugs
- Patient being unable to provide informed consent.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Dr. Kanchan Devi Dr. Kanchan Devi, Bachelor In Dental Surgery contact
Pakistan1 site, 1 recruiting
- Recruiting
Dow University of Health Sciences
Karachi, Sindh, 75600
Dr. Kanchan Devi Dr. Kanchan Devi, Bachelor In Dental Surgery, 092333-2972137, kanchanharmit@gmail.com
About this study
Official title: Comparing the Effect of Acetaminophen, NSAIDs, Trypsin-chymotrypsin + Acetaminophen on Post-endodontic Pain Using Visual Analog Scale (VAS) After Single Visit Endodontic Treatment: A Randomized Controlled Trial
This randomized control trial will be planned according to PRIRATE 2020 guideline for reporting randomized trials in Endodontics. The protocol of this study will be multiple parallel arm, single blinded, randomized single centered clinical trial (allocation ratio 1:1) The study will be conducted after taking the approval from the Institutional review board (IRB), Dow University of Health Sciences (Karachi). The participants will be selected according to the inclusion and exclusion criteria and on the basis of digital peri-apical radiograph and pulp sensibility test. After taking consent (Annexure form B) from patient, cold test will be performed by applying, a cotton pellet wetted with cold spray (Endodontia) to the middle third of the buccal surface of the affected tooth. Then results of electrical test will be assessed by using a digital electric pulp tester (EPT) [Parkell (Sybron Endo 91740)], applying the electrode to the buccal cusp on a location close to the pulp chamber of the premolar. VAS in written form will be provided to the patients and will explain the patient about the VAS reading and how to measure the pain intensity. Afterwards, endodontic treatment will be initiated by applying topical anesthetic gel (2% Benzocaine) along with local anesthesia (2% lidocaine with 1:100 000 epinephrine). Rubber dam isolation and access cavity preparation, working length will be determined by K-10 file (MANI) and confirmed both by apex locater (J.MORITA, Dentaport Zx) and with the help of digital periapical radiograph (DIGORA). After initial canal shaping and irrigation with sodium hypochlorite (5.25%), cleaning and shaping will be done by rotary Protaper gold file (Dentsply) in sequence SX, S1, S2, F1 ,F2 till F3. Canals will be dried by corresponding paper point and obturation will be done by lateral compaction. For the obturation Protaper gold gutta percha and accessory gutta percha (ISO) will be used with sealer (Sealapex). The orfices will be sealed and permanent restoration will be done by packable composite (Ivoclar). After performing endodontic treatment the respective drug inside the sealed envelope will be randomly given to the patient and the patient will be called at 6hrs, 12hrs, 24hrs, 48hrs and 72 hrs for the determination of pain intensity and that data will be entered in data entry form(Annexure form A).
- Conditions
- Symptomatic Irreversible Pulpitis (SIP)
- Being tested
- Acetaminophen, NSAID, trypsin-chymotrypsin
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
AcetaminophenDrug
500 mg orally, three times daily after meals for 3 days following completion of single-visit endodontic treatment
NSAIDDrug
600 mg orally, three times daily, 1 hour before meals for 3 days following completion of treatment
trypsin-chymotrypsinDrug
Acetaminophen 500 mg orally three times daily after meals plus Trypsin 5 mg + Chymotrypsin 5 mg orally three times daily, 1 hour before meals, for 3 days after treatment
| Study group | Role | What they receive |
|---|---|---|
| Acetaminophen Group (Group A) | Active comparator | 500 mg orally, three times daily after meals for 3 days following completion of single-visit endodontic treatment. Receives: Drug: Acetaminophen |
| NSAID Group (Group B) | Active comparator | 600 mg orally, three times daily, 1 hour before meals for 3 days following completion of treatment Receives: Drug: NSAID |
| Trypsin-Chymotrypsin + Acetaminophen Group (Group C) | Experimental | Acetaminophen 500 mg orally three times daily after meals plus Trypsin 5 mg + Chymotrypsin 5 mg orally three times daily, 1 hour before meals, for 3 days after treatment. Receives: Drug: trypsin-chymotrypsin |
What is being measured
The primary outcome is the main question the study is designed to answer.
Comparing the effect of acetaminophen, NSAIDs, trypsin-chymotrypsin + acetaminophen on post endodontic pain using visual analog scale (VAS) after single visit endodontic treatment: A randomized controlled trial"
Post-endodontic pain intensity will be assessed using the 10-cm Visual Analog Scale (VAS) to compare the effectiveness of acetaminophen, NSAIDs, and trypsin-chymotrypsin plus acetaminophen following single-visit endodontic treatment. Pain will be recorded before treatment and at 6, 12, 24, 48, and 72 hours after treatment. Lower VAS scores indicate better pain control
Measured: 6, 12, 24, 48, and 72 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Aug 2026
- Study start2 Aug 2026 (estimated)
- Primary completion1 Dec 2026 (estimated)
- Study completion1 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Symptomatic Irreversible Pulpitis (SIP)Studies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Early Phase 1
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 90 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Dow University of Health Sciences
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Kanchan Devi, Dow University of Health Sciences
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07759349
- Sponsor's protocol ID
- IRB4334/DUHS/Approval/2025/227
- Status last verified
- Aug 2026
- First submitted
- 7 Aug 2026
- Last updated
- 19 Aug 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 19 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparing the Effect of Acetaminophen, NSAIDs, Trypsin-chymotrypsin + Acetaminophen on Post-endodontic Pain Using Visual Analog Scale (VAS) After Single Visit Endodontic Treatment: A Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT07759349
- Acronym / sponsor ID
- IRB4334/DUHS/Approval/2025/227
- Conditions
- Symptomatic Irreversible Pulpitis (SIP)
- Phase
- Early Phase 1
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 90 participants (estimated)
- Lead sponsor
- Dow University of Health SciencesUniversity, hospital or other
- Study start
- 2 Aug 2026 (estimated)
- Primary completion
- 1 Dec 2026 (estimated)
- Study completion
- 1 Dec 2026 (estimated)
- First posted
- 12 Aug 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This randomized control trial will be planned according to PRIRATE 2020 guideline for reporting randomized trials in Endodontics. The protocol of this study will be multiple parallel arm, single blinded, randomized single centered clinical trial (allocation ratio 1:1) The study will be conducted after taking the approval from the Institutional review board (IRB), Dow University of Health Sciences (Karachi). The participants will be selected according to the inclusion and exclusion criteria and on the basis of digital peri-apical radiograph and pulp sensibility test. After taking consent (Annexure form B) from patient, cold test will be performed by applying, a cotton pellet wetted with cold spray (Endodontia) to the middle third of the buccal surface of the affected tooth. Then results of electrical test will be assessed by using a digital electric pulp tester (EPT) [Parkell (Sybron Endo 91740)], applying the electrode to the buccal cusp on a location close to the pulp chamber of the premolar. VAS in written form will be provided to the patients and will explain the patient about the VAS reading and how to measure the pain intensity. Afterwards, endodontic treatment will be initiated by applying topical anesthetic gel (2% Benzocaine) along with local anesthesia (2% lidocaine with 1:100 000 epinephrine). Rubber dam isolation and access cavity preparation, working length will be determined by K-10 file (MANI) and confirmed both by apex locater (J.MORITA, Dentaport Zx) and with the help of digital periapical radiograph (DIGORA). After initial canal shaping and irrigation with sodium hypochlorite (5.25%), cleaning and shaping will be done by rotary Protaper gold file (Dentsply) in sequence SX, S1, S2, F1 ,F2 till F3. Canals will be dried by corresponding paper point and obturation will be done by lateral compaction. For the obturation Protaper gold gutta percha and accessory gutta percha (ISO) will be used with sealer (Sealapex). The orfices will be sealed and permanent restoration will be done by packable composite (Ivoclar). After performing endodontic treatment the respective drug inside the sealed envelope will be randomly given to the patient and the patient will be called at 6hrs, 12hrs, 24hrs, 48hrs and 72 hrs for the determination of pain intensity and that data will be entered in data entry form(Annexure form A).
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Acetaminophen Group (Group A) | Active comparator | Drug: Acetaminophen500 mg orally, three times daily after meals for 3 days following completion of single-visit endodontic treatment. |
| NSAID Group (Group B) | Active comparator | Drug: NSAID600 mg orally, three times daily, 1 hour before meals for 3 days following completion of treatment |
| Trypsin-Chymotrypsin + Acetaminophen Group (Group C) | Experimental | Drug: trypsin-chymotrypsinAcetaminophen 500 mg orally three times daily after meals plus Trypsin 5 mg + Chymotrypsin 5 mg orally three times daily, 1 hour before meals, for 3 days after treatment. |
Who may qualify
- Ages
- 18 to 60 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (5 listed)
- Both sex
- Healthy ( American Society of Anesthesiologists class 1)
- Age 18-60 years
- Pulpal diagnosis: Symptomatic irreversible pulpitis in mandibular premolar (single canal) periapical diagnosis: symptomatic apical periodontitis
- The ability of participants to understand a pain scale (VAS)
Key exclusion criteria (9 listed)
- Pregnant females
- Systemic disease and immune deficiency
- Taken analgesics 24 hours, prior to treatment
- Non-vital, previously initiated, previously treated teeth
- Radiographic evidence of peri-radicular pathosis
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Acetaminophen500 mg orally, three times daily after meals for 3 days following completion of single-visit endodontic treatment | Drug | Acetaminophen Group (Group A) |
| NSAID600 mg orally, three times daily, 1 hour before meals for 3 days following completion of treatment | Drug | NSAID Group (Group B) |
| trypsin-chymotrypsinAcetaminophen 500 mg orally three times daily after meals plus Trypsin 5 mg + Chymotrypsin 5 mg orally three times daily, 1 hour before meals, for 3 days after treatment | Drug | Trypsin-Chymotrypsin + Acetaminophen Group (Group C) |
Primary outcome
Comparing the effect of acetaminophen, NSAIDs, trypsin-chymotrypsin + acetaminophen on post endodontic pain using visual analog scale (VAS) after single visit endodontic treatment: A randomized controlled trial"
Time frame: 6, 12, 24, 48, and 72 hours
Post-endodontic pain intensity will be assessed using the 10-cm Visual Analog Scale (VAS) to compare the effectiveness of acetaminophen, NSAIDs, and trypsin-chymotrypsin plus acetaminophen following single-visit endodontic treatment. Pain will be recorded before treatment and at 6, 12, 24, 48, and 72 hours after treatment. Lower VAS scores indicate better pain control
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Aug 2026.
- Individual participant dataSharing planned: No
Related trials for Symptomatic Irreversible Pulpitis (SIP)
Recruiting
Intraligamentary vs Inferior Alveolar Nerve Block for Pulpitis: A Randomized Clinical Trial
Symptomatic Irreversible Pulpitis (SIP), Dental Pain
Recruiting
Comparison of Anesthetic Efficacy OF 2% Lidocaine Inferior Alveolar Nerve (IANB) Block Versus Primary Buccal Infilteration With 4% Articaine in Symptomatic Irreversible Pulpitis(SIP) IN Mandibular First Molars
Anesthetic Efficacy
Not yet recruiting
Comparison of Postoperative Pain After Root Canal Treatment Using Hand-Held vs Rotary ProTaper Files: A Randomized Controlled Trial
Symptomatic Irreversible Pulpitis (SIP), Symptomatic Apical Periodontitis
Recruiting
Short Term Comparative Assessment of MTA and Biodentine in Complete Pulpotomy for Symptomatic Irreversible Pulpitis
Symptomatic Irreversible Pulpitis (SIP)
Recruiting
Outcome of Partial Pulpotomy in Permanent Mandibular Molars With Symptomatic Irreversible Pulpitis After Wound Lavage With Calcium Hypochlorite or Sodium Hypochlorite
Symptomatic Irreversible Pulpitis (SIP), Extremely Deep Caries
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Dr. Kanchan Devi Dr. Kanchan Devi, Bachelor In Dental Surgery contact
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Early Phase 1 study testing Acetaminophen, NSAID and trypsin-chymotrypsin in people with Symptomatic Irreversible Pulpitis (SIP), run by Dow University of Health Sciences at 1 site in Pakistan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 19 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Pakistan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Dr. Kanchan Devi Dr. Kanchan Devi, Bachelor In Dental Surgery (092333-2972137, kanchanharmit@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Comparing the effect of acetaminophen, NSAIDs, trypsin-chymotrypsin + acetaminophen on post endodontic pain using visual analog scale (VAS) after single visit endodontic treatment: A randomized controlled trial" (time frame: 6, 12, 24, 48, and 72 hours). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Aug 2026.