Tooth Bleaching PainNCT06066671
The Effect of an Experimental Gel Based on Copaiba Oil Resin in Reducing Post-bleaching Tooth Sensitivity
A study testing GCO (Experimental copaiba oil resin gel) in people with Tooth Bleaching Pain, run by Universidade Federal do Para at 1 site in Brazil.
Trial summary
This randomized, double-blind clinical trial aimed to evaluate the effect of an experimental gel containing copaiba oil resin in reducing postoperative tooth sensitivity caused by bleaching with 35% hydrogen peroxide. Read more about this study
- Who is it for?
- Ages 18 to 40 yearsHealthy volunteers can take part
- Conditions the study is for
- Tooth Bleaching Pain
- What is being tested?
- GCO (Experimental copaiba oil resin gel)
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 75 participants
- Where
- 1 siteBrazil
- Study dates
- 10 Jan 2024to 7 May 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 40 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- good oral hygiene
- absence of active caries lesions
- never undergone bleaching therapy
- not present dental hypersensitivity
- don't be a smoker
- don´t be pregnant
- present at least 28 teeth in the oral cavity
Who cannot join
- volunteers undergoing orthodontic treatment,
- presence of periodontal disease
- dental cracks or fractures
- restorations and prostheses on anterior teeth
- extensive molar restorations
- gastroesophageal disorders
- severe internal dental darkening
- presence of dentinal exposure in anterior and / or posterior teeth.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Evaluation of the Effect of na Experimental Gel Based on Copaiba Oil Resin in Reducing Post-bleaching Tooth Sensitivity: a Randomized Clinical Study
This randomized, double-blind clinical trial aimed to evaluate the effect of an experimental gel containing copaiba oil resin in reducing postoperative tooth sensitivity caused by bleaching with 35% hydrogen peroxide. The volunteers of this study were randomized into 3 different groups - GC (placebo); GN (potassium nitrate and sodium fluoride); GCO (copaiba oil resin). The dental elements of the GCO received application of the experimental desensitizing gel on the buccal surfaces of the central incisors, lateral incisors, canines and upper and lower premolars, with a rubber cup in an active way, for 10 minutes. The GC and GN groups also received the application of a placebo gel and a nitrate potassium and sodiun fluoride gel, respectively, under the same conditions described for the experimental gel. Subsequently, all groups underwent in-office bleaching treatment with 35% hydrogen peroxide. Post-bleaching sensitivity was collected through a form composed of the visual analogue scale (VAS). Color measurement was performed at two times: baseline (Ti) and one week after the 3rd bleaching session (Tf).
- Conditions
- Tooth Bleaching Pain
- Being tested
- GCO (Experimental copaiba oil resin gel)
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
GCO (Experimental copaiba oil resin gel)Other
Prior to bleaching treatment with 35% hydrogen peroxide, the dental elements of the GCO will receive the application of the experimental desensitizing gel on the buccal surfaces of the central incisors, lateral incisors, canines and upper and lower premolars, with a rubber cup in an active way, for 10 minutes.
| Study group | Role | What they receive |
|---|---|---|
| GCO (Experimental copaiba oil resin gel) | Experimental | The GCO group will receive the application of an experimental gel based on copaiba oil resin for post tooth bleaching sensitivity Receives: Other: GCO (Experimental copaiba oil resin gel) |
| GN (Potassiun nitrate and sodium fluoride gel) | Active comparator | The GN group will receive the application of a potassium and sodium nitrate gel for post tooth bleaching sensitivity Receives: Other: GCO (Experimental copaiba oil resin gel) |
| GC | Placebo comparator | The GC group will receive the application of a placebo gel for post tooth bleaching sensitivity Receives: Other: GCO (Experimental copaiba oil resin gel) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Assessment of post-bleaching sensitivity
For the assessment of postoperative sensitivity, patients were instructed to fill out a form to record tooth sensitivity daily, during the 21 days of treatment, based on individual pain perception. This form was delivered at each bleaching session, being returned to the researcher in the following session, that is, always one week after each bleaching session. The evaluation form consisted of the visual analogue scale (VAS). This scale consists of a 10 cm horizontal line, with scores of 0 and 10 at its ends, where 0 means no sensitivity and 10 means severe tooth sensitivity. The patient was instructed to draw a vertical line along the horizontal line of the scale, recording the intensity of tooth sensitivity per day. So that the distance in millimeters from the zero end could be later measured with the aid of amillimeter ruler, thus obtaining the patient's level of pain intensity.
Measured: 21 days
Secondary outcomes (1)
Color evaluation
The VITA Easyshade spectrophotometer (VITA Zahnfabrik, Bad Säckingen, Germany) was used to measure the color, where the area of dental correspondence to be evaluated was the middle third of the buccal surface of the upper canines. To standardize the color readings, silicone trays were made, where the impression was extended from canine to canine. A window was created on the buccal surface of each canine of the silicone guide using a metal device with a 6 mm radius, corresponding to the diameter of the spectrophotometer tip. Thus, the tip of the device was inserted into the silicone guide to obtain the color parameters. Subsequently, the color difference between baseline (T i) and one week after the 3rd bleaching session (T f ) was calculated using the CIEDE2000 formulas (ΔE00).
Measured: Baseline (Ti) and one week after the 3rd bleaching session (Tf)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Oct 2023
- Study start10 Jan 2024
- Primary completion7 May 2024
- Study completion7 May 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Tooth Bleaching PainStudies 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
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 75 participants (actual)
Sponsor and investigators
- Lead sponsor
- Universidade Federal do Para
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Cecy Martins Silva, Universidade Federal do Para
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06066671
- Sponsor's protocol ID
- UFPara016
- Status last verified
- May 2024
- First submitted
- 27 Sep 2023
- Last updated
- 8 May 2024
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 8 May 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of the Effect of na Experimental Gel Based on Copaiba Oil Resin in Reducing Post-bleaching Tooth Sensitivity: a Randomized Clinical Study
- ClinicalTrials.gov ID
- NCT06066671
- Acronym / sponsor ID
- UFPara016
- Conditions
- Tooth Bleaching Pain
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 75 participants (actual)
- Lead sponsor
- Universidade Federal do ParaUniversity, hospital or other
- Study start
- 10 Jan 2024 (actual)
- Primary completion
- 7 May 2024 (actual)
- Study completion
- 7 May 2024 (actual)
- First posted
- 4 Oct 2023 (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, double-blind clinical trial aimed to evaluate the effect of an experimental gel containing copaiba oil resin in reducing postoperative tooth sensitivity caused by bleaching with 35% hydrogen peroxide. The volunteers of this study were randomized into 3 different groups - GC (placebo); GN (potassium nitrate and sodium fluoride); GCO (copaiba oil resin). The dental elements of the GCO received application of the experimental desensitizing gel on the buccal surfaces of the central incisors, lateral incisors, canines and upper and lower premolars, with a rubber cup in an active way, for 10 minutes. The GC and GN groups also received the application of a placebo gel and a nitrate potassium and sodiun fluoride gel, respectively, under the same conditions described for the experimental gel. Subsequently, all groups underwent in-office bleaching treatment with 35% hydrogen peroxide. Post-bleaching sensitivity was collected through a form composed of the visual analogue scale (VAS). Color measurement was performed at two times: baseline (Ti) and one week after the 3rd bleaching session (Tf).
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| GCO (Experimental copaiba oil resin gel) | Experimental | Other: GCO (Experimental copaiba oil resin gel)The GCO group will receive the application of an experimental gel based on copaiba oil resin for post tooth bleaching sensitivity |
| GN (Potassiun nitrate and sodium fluoride gel) | Active comparator | Other: GCO (Experimental copaiba oil resin gel)The GN group will receive the application of a potassium and sodium nitrate gel for post tooth bleaching sensitivity |
| GC | Placebo comparator | Other: GCO (Experimental copaiba oil resin gel)The GC group will receive the application of a placebo gel for post tooth bleaching sensitivity |
Who may qualify
- Ages
- 18 to 40 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (7 listed)
- good oral hygiene
- absence of active caries lesions
- never undergone bleaching therapy
- not present dental hypersensitivity
- don't be a smoker
Key exclusion criteria (8 listed)
- volunteers undergoing orthodontic treatment,
- presence of periodontal disease
- dental cracks or fractures
- restorations and prostheses on anterior teeth
- extensive molar restorations
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 |
|---|---|---|
| GCO (Experimental copaiba oil resin gel)Prior to bleaching treatment with 35% hydrogen peroxide, the dental elements of the GCO will receive the application of the experimental desensitizing gel on the buccal surfaces of the central incisors, lateral incisors, canines and upper and lower premolars, with a rubber cup in an active way, for 10 minutes. | Other | GC, GCO (Experimental copaiba oil resin gel), GN (Potassiun nitrate and sodium fluoride gel) |
Primary outcome
Assessment of post-bleaching sensitivity
Time frame: 21 days
For the assessment of postoperative sensitivity, patients were instructed to fill out a form to record tooth sensitivity daily, during the 21 days of treatment, based on individual pain perception. This form was delivered at each bleaching session, being returned to the researcher in the following session, that is, always one week after each bleaching session. The evaluation form consisted of the visual analogue scale (VAS). This scale consists of a 10 cm horizontal line, with scores of 0 and 10 at its ends, where 0 means no sensitivity and 10 means severe tooth sensitivity. The patient was instructed to draw a vertical line along the horizontal line of the scale, recording the intensity of tooth sensitivity per day. So that the distance in millimeters from the zero end could be later measured with the aid of amillimeter ruler, thus obtaining the patient's level of pain intensity.
1 secondary outcome
Color evaluation
Time frame: Baseline (Ti) and one week after the 3rd bleaching session (Tf)
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 May 2024.
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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. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing GCO (Experimental copaiba oil resin gel) in people with Tooth Bleaching Pain, run by Universidade Federal do Para at 1 site in Brazil.
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 7 inclusion and 8 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: finished, as of the sponsor's last update on 8 May 2024. 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 Brazil. 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. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Assessment of post-bleaching sensitivity (time frame: 21 days). 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 8 May 2024.