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Effect of Cryotherapy on Post-endodontic Pain

Effect of Cryotherapy and Occlusal Reduction on Post-endodontic Pain in Patients With Symptomatic Apical Periodontitis

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05722704
Enrollment
60
Registered
2023-02-10
Start date
2022-09-12
Completion date
2023-12-12
Last updated
2024-12-24

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

Conditions

Cryotherapy

Keywords

Post endodontic pain, Cryotherapy, Occlusal reduction, Root canal treatment

Brief summary

The goal of this clinical trial is to compare Cryotherapy with occlusal reduction in the reduction of post-endodontic pain in molars with symptomatic apical periodontitis. The main question it aims to answer is: Is there is a difference in post-endodontic pain intensity following cryotherapy or occlusal reduction in patients with symptomatic apical periodontitis on mandibular first molars? Participants will undergo root canal treatment including cryotherapy or post-operative occlusal reduction. Researchers will compare \[Cryotherapy, occlusal reduction, and no intervention\] to see the intensity of post-endodontic pain.

Detailed description

The study will be conducted on 60 first mandibular molars; with 20 first mandibular molars in each group (n=20). The patient will be asked to pick an opaque sealed envelope that will contain a number from 1 to 3. The resultant number will determine in which group the participants will be placed. Double blinding will be maintained in this study as the operator and the patients will not be aware of their group/used root canal irrigant. Group I : normal room temperature saline irrigation protocol without occlusal reduction. Group II : normal room temperature saline irrigation protocol with occlusal reduction. Group III : final irrigation with cold saline (2.5 C°- 4 C°) without occlusal reduction. Procedural steps: 1. Vitality will be assessed using cold tests and electric pulp testing before the procedure is carried out. Besides, mobility, palpation, and percussion tests will be done to assess periapical health. In order to ensure that the cold and electrical pulp tests are working, and a response is elicited, both tests will be carried out on patients not included in the study. 2. All the patients will receive local anesthesia: 2% lidocaine with 1:100,000 epinephrine. 3. Each tooth will be isolated using a rubber dam, and the access cavity will be prepared using a round bur (no.4) and tapered fissure diamond bur under copious water. 4. After removal of coronal pulp tissues using a sterile excavator, the working length will be determined with stainless steel hand K-files size #10 and the use of an apex locator and confirmed using intraoral periapical radiographs. 5. Hand instrumentation to 15-size K files. 6. All the canals will be prepared using ProTaper Gold rotary files till the master apical file F2. 7. Apical patency will be maintained throughout the shaping procedure using the #10 file between each instrument. 8. All the canals will be irrigated with 10 mL of 3% NaOCl between each file during the whole preparation procedure. 9. In group I the root canals will be obturated directly after preparation. 10. In group II occlusal reduction will be performed after root canal preparation. 11. For group III the root canals will be irrigated for 5 min using 20 ml cryo-treated saline maintained at a temperature of 2°C-4°C. 12. After completion of cleaning and shaping dried using appropriate size paper points and the canals will be obturated using gutta-percha, and restored by permanent composite restoration.

Interventions

PROCEDURECryotherapy

Final irrigation with cold saline (2.5C-4C) without occlusal reduction

Reduction of the functional and non-functional cusps

Sponsors

Gulf Medical University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
Yes

Inclusion criteria

1. Age: 18-70 years 2. A patient diagnosed with symptomatic irreversible pulpitis/acute apical periodontitis 3. require endodontic therapy 4. Mandibular first molars that are diagnosed with symptomatic irreversible pulpitis/acute apical periodontitis 5. Healthy patients without systemic disease 6. Permanent mature first mandibular molars

Exclusion criteria

1. Medically compromised patients 2. Pregnant patients 3. Teeth with incomplete apex formation 4. Teeth with calcified canals 5. Periapical abscess 6. Patients on antibiotic therapy

Design outcomes

Primary

MeasureTime frameDescription
The Level of Post-endodontic Pain6 hoursEvaluation of the pain intensity using the Visual Analogue Scale. The Visual Analogue Scale measures pain intensity. The Visual Analogue Scale consists of a 10cm line, with two endpoints representing 0 ('no pain') and 10 ('pain as bad as it could possibly be)

Countries

United Arab Emirates

Participant flow

Participants by arm

ArmCount
Cryotherapy
Final irrigation with cold saline (2.5C-4C) without occlusal reduction Cryotherapy: Final irrigation with cold saline (2.5C-4C) without occlusal reduction
20
Occlusal Reduction
Normal room temperature saline irrigation protocol with occlusal reduction Occlusal reduction: Reduction of the functional and non-functional cusps
20
Control
Normal room temperature saline irrigation protocol without occlusal reduction
20
Total60

Baseline characteristics

CharacteristicCryotherapyOcclusal ReductionControlTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
20 Participants20 Participants20 Participants60 Participants
Age, Continuous34 years
STANDARD_DEVIATION 7.85
31.4 years
STANDARD_DEVIATION 6.56
32.35 years
STANDARD_DEVIATION 8.98
32.5 years
STANDARD_DEVIATION 7.7
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
20 Participants20 Participants20 Participants60 Participants
Region of Enrollment
United Arab Emirates
20 Participants20 Participants20 Participants60 Participants
Sex: Female, Male
Female
11 Participants17 Participants12 Participants40 Participants
Sex: Female, Male
Male
9 Participants3 Participants8 Participants20 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 200 / 200 / 20
other
Total, other adverse events
0 / 200 / 200 / 20
serious
Total, serious adverse events
0 / 200 / 200 / 20

Outcome results

Primary

The Level of Post-endodontic Pain

Evaluation of the pain intensity using the Visual Analogue Scale. The Visual Analogue Scale measures pain intensity. The Visual Analogue Scale consists of a 10cm line, with two endpoints representing 0 ('no pain') and 10 ('pain as bad as it could possibly be)

Time frame: 6 hours

ArmMeasureValue (MEAN)Dispersion
CryotherapyThe Level of Post-endodontic Pain1.85 score on a scaleStandard Deviation 1.81
Occlusal ReductionThe Level of Post-endodontic Pain2.15 score on a scaleStandard Deviation 2.11
SalineThe Level of Post-endodontic Pain3.65 score on a scaleStandard Deviation 3.03
p-value: 0.986Kruskal-Wallis
Primary

The Level of Post-endodontic Pain

Evaluation of the pain intensity using the Visual Analogue Scale. The Visual Analogue Scale measures pain intensity. The Visual Analogue Scale consists of a 10cm line, with two endpoints representing 0 ('no pain') and 10 ('pain as bad as it could possibly be)

Time frame: 24 hours

ArmMeasureValue (MEAN)Dispersion
CryotherapyThe Level of Post-endodontic Pain0.70 score on a scaleStandard Deviation 1.13
Occlusal ReductionThe Level of Post-endodontic Pain1.2 score on a scaleStandard Deviation 1.32
SalineThe Level of Post-endodontic Pain2.2 score on a scaleStandard Deviation 1.82
p-value: <0.118Kruskal-Wallis
Primary

The Level of Post-endodontic Pain

Evaluation of the pain intensity using the Visual Analogue Scale. The Visual Analogue Scale measures pain intensity. The Visual Analogue Scale consists of a 10cm line, with two endpoints representing 0 ('no pain') and 10 ('pain as bad as it could possibly be)

Time frame: 48 hours

ArmMeasureValue (MEAN)Dispersion
CryotherapyThe Level of Post-endodontic Pain0.25 score on a scaleStandard Deviation 0.79
Occlusal ReductionThe Level of Post-endodontic Pain1.2 score on a scaleStandard Deviation 1.32
SalineThe Level of Post-endodontic Pain2.2 score on a scaleStandard Deviation 1.82
p-value: 0.225Kruskal-Wallis
Primary

The Level of Post-endodontic Pain

Evaluation of the pain intensity using the Visual Analogue Scale. The Visual Analogue Scale measures pain intensity. The Visual Analogue Scale consists of a 10cm line, with two endpoints representing 0 ('no pain') and 10 ('pain as bad as it could possibly be)

Time frame: 72 hours

ArmMeasureValue (MEAN)Dispersion
CryotherapyThe Level of Post-endodontic Pain0.10 score on a scaleStandard Error 0.45
Occlusal ReductionThe Level of Post-endodontic Pain0.05 score on a scaleStandard Error 0.22
SalineThe Level of Post-endodontic Pain0.25 score on a scaleStandard Error 0.72
p-value: 0.424Kruskal-Wallis

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026