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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02956070
Other study ID # bleaching
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date October 2015
Est. completion date May 2016

Study information

Verified date November 2020
Source Universidade Federal Fluminense
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Clinical randomized, triple-blind, used to measure the level of tooth sensitivity on volunteers using a modified virtual analog scale (VAS). Sixty-six volunteers will be selected and recruited, following inclusion criteria and pre-established exclusion. All volunteers will be guided and sign a term of clarification and consent. Volunteers will be randomly divided into two groups: the control group to receive placebo capsules and application of desensitizing gel containing 6% potassium nitrate and 0.10% fluoro- (conventional treatment) and the experimental group will receive the anti-inflammatory corticosteroids (dexamethasone, capsule - 8mg) and application of a placebo gel. Patients will be treated in two clinical sessions with an interval of 7 days (one week) between them. The protocol for use of the product is as follows: The volunteers in the experimental group will receive six capsules of dexamethasone 8 mg each to be administered orally, initially two days before the first bleaching query as follows: 8 mg (1 capsule) 9 am in the morning two days before the first clinical session whitening; 8 mg (1 capsule) the 9 am to 1 day before the first practice session whitening, 8 mg (1 capsule) to 9 am on the day of the first practice session of whitening. After 7 days (one week), the same protocol will be held for the second and final practice session office bleaching.


Description:

The experimental design will follow the consolidated standards for test reports (CONSORT). After approval by the Ethics Committee for Research duly registered, the trial will be conducted in the clinic of dental school at the Federal Fluminense University located in Nova Friburgo.Every Health Institute participants will be informed about the nature and objectives of the study.It will be one test study Clinical randomized, parallel, triple-blind, used to measure the level of tooth sensitivity volunteers using a modified virtual analog scale (VAS). Sixty-six volunteers will be selected and recruited, following inclusion criteria and pre-established exclusion. All volunteers will be guided and sign a term of clarification and consent. Volunteers will be randomly divided into two groups: the control group to receive placebo capsules and application of desensitizing gel containing 6% potassium nitrate and 0.10% fluoro- (conventional treatment) and the experimental group will receive the anti-inflammatory corticosteroids (dexamethasone, capsule - 8mg) and application of a placebo gel. Patients will be treated in two clinical sessions with an interval of 7 days (one week) between them. The protocol for use of the product is as follows: The volunteers in the experimental group will receive six capsules of dexamethasone 8 mg each to be administered orally, initially two days before the first bleaching query as follows: 8 mg (1 capsule) 9 am in the morning two days before the first clinical session whitening; 8 mg (1 capsule) the 9 am to 1 day before the first practice session whitening, 8 mg (1 capsule) to 9 am on the day of the first practice session of whitening. After 7 days (one week), the same protocol will be held for the second and final practice session office bleaching.


Recruitment information / eligibility

Status Completed
Enrollment 70
Est. completion date May 2016
Est. primary completion date May 2016
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - The selected volunteers should present a good general state of health, be at least 18 years of age, regardless of gender, color / race and ethnicity, sexual orientation, and gender identity. - Volunteers must have an acceptable oral hygiene, present the upper and lower arches without absence of teeth of first premolar right to the left first premolar. - These elements have to be healthy, that is, not having any kind of restoration. - Volunteers must sign the consent form and clarification, have committed to return for periodic examinations and belong to the group of nonsmokers. Exclusion Criteria: - Do not have medical history of diseases that can affect the results of the study; - subjects could not have made use of cigarettes in the last 30 days; have some important pathology in the oral cavity; - not being pregnant and also are not breastfeeding; - having any history of sensitivity or adverse reactions to anti-inflammatory used in the study; - not having calculations or advanced periodontal disease; - have not consumed drugs, alcohol or any medication that can cover the results, as other types of anti-inflammatories or painkillers; - The volunteers should not have used products indicated for dental sensitivity, as desensitizing toothpaste or similar product and not present recession or exacerbated hypersensitivity history.

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Dexamethasone acetate
The volunteers in the Dexamethasone acetate group (experimental group) will receive six capsules of dexamethasone 8 mg each to be administered orally, initially two days before the first bleaching query as follows: 8 mg (1 capsule) 9 am two days before the first clinical session whitening; 8 mg (1 capsule) the 9 am to 1 day before session whitening, 8 mg (1 capsule) to 9 am on the day of the first session of whitening.Clinical intervention: 1- Dry teeth and apply Gingival Barrier to both arches. 2- Light cure. 3- Firmly attach a mixing nozzle to the Pola Office+. 4- Apply a thin layer of gel to all teeth undergoing treatment. 5- Leave gel on for 8 minutes. 6- Suction it off. 7- Repeat steps 5-6 twice times. 8- After the last application, suction all the gel off, then wash and apply suction. 9- Remove Gingival Barrier. 10- A placebo gel will be applied with a brush on the labial surface of the teeth whitened for 2 to 3 minutes .
Potassium Nitrate
The volunteers in the Potassium Nitrate Group (Placebo group) will receive 6 placebo capsules, who contained the same components of de dexamethasone drug except the active ingredient (starch [50%], lactose monohydrate [35%], dibasic calcium phosphate [14%], and magnesium stearate [1%]).Clinical session:1- Dry teeth and apply Gingival Barrier to both arches. 2- Light cure. 3- Firmly attach a mixing nozzle to the Pola Office+. 4- Apply a thin layer of gel to all teeth undergoing treatment. 5- Leave gel on for 8 minutes. 6- Suction it off. 7- Repeat steps 5-6 twice times. 8- After the last application, suction all the gel off, then wash and apply suction. 9- Remove Gingival Barrier. 10- A desensitizing gel containing 6% potassium nitrate will be applied with a brush on the labial surface of the teeth whitened for 2 to 3 minutes .

Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
Universidade Federal Fluminense

References & Publications (18)

Bamgbose BO, Akinwande JA, Adeyemo WL, Ladeinde AL, Arotiba GT, Ogunlewe MO. Effects of co-administered dexamethasone and diclofenac potassium on pain, swelling and trismus following third molar surgery. Head Face Med. 2005 Nov 7;1:11. — View Citation

Bonafé E, Bacovis CL, Iensen S, Loguercio AD, Reis A, Kossatz S. Tooth sensitivity and efficacy of in-office bleaching in restored teeth. J Dent. 2013 Apr;41(4):363-9. doi: 10.1016/j.jdent.2013.01.007. Epub 2013 Jan 26. — View Citation

Bonafé E, Loguercio AD, Reis A, Kossatz S. Effectiveness of a desensitizing agent before in-office tooth bleaching in restored teeth. Clin Oral Investig. 2014 Apr;18(3):839-45. — View Citation

Carey CM. Tooth whitening: what we now know. J Evid Based Dent Pract. 2014 Jun;14 Suppl:70-6. doi: 10.1016/j.jebdp.2014.02.006. Epub 2014 Feb 13. Review. — View Citation

Charakorn P, Cabanilla LL, Wagner WC, Foong WC, Shaheen J, Pregitzer R, Schneider D. The effect of preoperative ibuprofen on tooth sensitivity caused by in-office bleaching. Oper Dent. 2009 Mar-Apr;34(2):131-5. — View Citation

Costa CA, Riehl H, Kina JF, Sacono NT, Hebling J. Human pulp responses to in-office tooth bleaching. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010 Apr;109(4):e59-64. doi: 10.1016/j.tripleo.2009.12.002. — View Citation

de Paula EA, Kossatz S, Fernandes D, Loguercio AD, Reis A. Administration of ascorbic acid to prevent bleaching-induced tooth sensitivity: a randomized triple-blind clinical trial. Oper Dent. 2014 Mar-Apr;39(2):128-35. doi: 10.2341/12-483-C. Epub 2013 Jun 26. — View Citation

de Paula EA, Loguercio AD, Fernandes D, Kossatz S, Reis A. Perioperative use of an anti-inflammatory drug on tooth sensitivity caused by in-office bleaching: a randomized, triple-blind clinical trial. Clin Oral Investig. 2013 Dec;17(9):2091-7. doi: 10.1007/s00784-013-0918-2. Epub 2013 Jan 31. — View Citation

de Paula EA, Nava JA, Rosso C, Benazzi CM, Fernandes KT, Kossatz S, Loguercio AD, Reis A. In-office bleaching with a two- and seven-day intervals between clinical sessions: A randomized clinical trial on tooth sensitivity. J Dent. 2015 Apr;43(4):424-9. doi: 10.1016/j.jdent.2014.09.009. Epub 2014 Sep 23. — View Citation

Faria-E-Silva AL, Nahsan FP, Fernandes MT, Martins-Filho PR. Effect of preventive use of nonsteroidal anti-inflammatory drugs on sensitivity after dental bleaching: a systematic review and meta-analysis. J Am Dent Assoc. 2015 Feb;146(2):87-93.e1. doi: 10.1016/j.adaj.2014.10.007. Review. — View Citation

He LB, Shao MY, Tan K, Xu X, Li JY. The effects of light on bleaching and tooth sensitivity during in-office vital bleaching: a systematic review and meta-analysis. J Dent. 2012 Aug;40(8):644-53. doi: 10.1016/j.jdent.2012.04.010. Epub 2012 Apr 21. Review. — View Citation

Li Y, Greenwall L. Safety issues of tooth whitening using peroxide-based materials. Br Dent J. 2013 Jul;215(1):29-34. doi: 10.1038/sj.bdj.2013.629. Review. — View Citation

Markowitz K. Pretty painful: why does tooth bleaching hurt? Med Hypotheses. 2010 May;74(5):835-40. doi: 10.1016/j.mehy.2009.11.044. Epub 2009 Dec 31. — View Citation

Paula E, Kossatz S, Fernandes D, Loguercio A, Reis A. The effect of perioperative ibuprofen use on tooth sensitivity caused by in-office bleaching. Oper Dent. 2013 Nov-Dec;38(6):601-8. doi: 10.2341/12-107-C. Epub 2013 Apr 15. — View Citation

Reis A, Tay LY, Herrera DR, Kossatz S, Loguercio AD. Clinical effects of prolonged application time of an in-office bleaching gel. Oper Dent. 2011 Nov-Dec;36(6):590-6. doi: 10.2341/10-173-C. Epub 2011 Sep 13. — View Citation

Rezende M, Bonafé E, Vochikovski L, Farago PV, Loguercio AD, Reis A, Kossatz S. Pre- and postoperative dexamethasone does not reduce bleaching-induced tooth sensitivity: A randomized, triple-masked clinical trial. J Am Dent Assoc. 2016 Jan;147(1):41-9. doi: 10.1016/j.adaj.2015.07.003. Epub 2015 Nov 6. — View Citation

Rhen T, Cidlowski JA. Antiinflammatory action of glucocorticoids--new mechanisms for old drugs. N Engl J Med. 2005 Oct 20;353(16):1711-23. Review. — View Citation

Vadivelu N, Mitra S, Schermer E, Kodumudi V, Kaye AD, Urman RD. Preventive analgesia for postoperative pain control: a broader concept. Local Reg Anesth. 2014 May 29;7:17-22. doi: 10.2147/LRA.S62160. eCollection 2014. Review. — View Citation

* Note: There are 18 references in allClick here to view all references

Outcome

Type Measure Description Time frame Safety issue
Primary Visual Analogic Scale (0-100) for Tooth Sensibility. The investigators evaluated the tooth sensibility 1 hour post-bleaching. Scale from 0-100 0 means no sensibility 100 means maximum sensibility One hour
Primary Visual Analogic Scale(0-100) for Tooth Sensibility. The investigators evaluated the tooth sensibility 24 hours post-bleaching. Scale from 0-100 0 means no sensibility 100 means maximum sensibility Twenty four hours
Primary Visual Analogic Scale(0-100) for Tooth Sensibility. The investigators evaluated the tooth sensibility 48 hours post-bleaching. Scale from 0-100 0 means no sensibility 100 means maximum sensibility Forty eight hours
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