NCT02956070

Brief 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.

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
70

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Oct 2015

Shorter than P25 for not_applicable

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 2015

Completed
7 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2016

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

May 1, 2016

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

October 25, 2016

Completed
10 days until next milestone

First Posted

Study publicly available on registry

November 4, 2016

Completed
4.1 years until next milestone

Results Posted

Study results publicly available

November 25, 2020

Completed
Last Updated

November 25, 2020

Status Verified

November 1, 2020

Enrollment Period

7 months

First QC Date

October 25, 2016

Results QC Date

August 18, 2020

Last Update Submit

November 3, 2020

Conditions

Keywords

dental bleachingantiinflammatorytooth sensitivity

Outcome Measures

Primary Outcomes (3)

  • 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

  • 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

  • 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

Study Arms (2)

Experimental

EXPERIMENTAL

35 patients in this group will undergo the whitening procedure using the Dexamethasone acetate intervention.

Drug: Dexamethasone acetate

Placebo

PLACEBO COMPARATOR

35 patients in this group will undergo the whitening procedure using the Potassium Nitrate intervention

Drug: Potassium Nitrate

Interventions

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 .

Also known as: Dexamethasone
Experimental

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 .

Also known as: Smoothe SDI
Placebo

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • 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.

You may not qualify if:

  • 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.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Related Publications (19)

  • 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.

    PMID: 24929591BACKGROUND
  • 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.

    PMID: 23371755BACKGROUND
  • 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.

    PMID: 23802640BACKGROUND
  • 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.

    PMID: 25257824BACKGROUND
  • Bonafe 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. doi: 10.1007/s00784-013-1055-7.

    PMID: 23959376BACKGROUND
  • Bonafe 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.

    PMID: 23357647BACKGROUND
  • 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.

    PMID: 25637206BACKGROUND
  • 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.

    PMID: 22525016BACKGROUND
  • 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.

    PMID: 24872720BACKGROUND
  • 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.

    PMID: 23846062BACKGROUND
  • 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.

    PMID: 20045265BACKGROUND
  • 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.

    PMID: 20303048BACKGROUND
  • Rhen T, Cidlowski JA. Antiinflammatory action of glucocorticoids--new mechanisms for old drugs. N Engl J Med. 2005 Oct 20;353(16):1711-23. doi: 10.1056/NEJMra050541. No abstract available.

    PMID: 16236742BACKGROUND
  • 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. doi: 10.1186/1746-160X-1-11.

    PMID: 16274480BACKGROUND
  • 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.

    PMID: 23586657BACKGROUND
  • 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.

    PMID: 21913864BACKGROUND
  • 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. doi: 10.2341/08-33.

    PMID: 19363967BACKGROUND
  • Rezende M, Bonafe 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.

    PMID: 26562735BACKGROUND
  • da Costa Poubel LA, de Gouvea CVD, Calazans FS, Dip EC, Alves WV, Marins SS, Barcelos R, Barceleiro MO. Pre-operative use of dexamethasone does not reduce incidence or intensity of bleaching-induced tooth sensitivity. A triple-blind, parallel-design, randomized clinical trial. Clin Oral Investig. 2019 Jan;23(1):435-444. doi: 10.1007/s00784-018-2452-8. Epub 2018 Apr 25.

MeSH Terms

Conditions

InflammationDentin Sensitivity

Interventions

dexamethasone acetateDexamethasonepotassium nitrate

Condition Hierarchy (Ancestors)

Pathologic ProcessesPathological Conditions, Signs and SymptomsTooth DiseasesStomatognathic Diseases

Intervention Hierarchy (Ancestors)

PregnadienetriolsPregnadienesPregnanesSteroidsFused-Ring CompoundsPolycyclic CompoundsSteroids, Fluorinated

Limitations and Caveats

No discontinuity in both treatment groups was found in the clinical investigation. All volunteers attended the recall visit 1 week postbleaching.

Results Point of Contact

Title
Dr. Luiz Augusto Poubel
Organization
Universidade Federal Fluminense

Study Officials

  • Marcos O Barceleiro, MSD, PhD

    Fluminense Federal University

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

October 25, 2016

First Posted

November 4, 2016

Study Start

October 1, 2015

Primary Completion

May 1, 2016

Study Completion

May 1, 2016

Last Updated

November 25, 2020

Results First Posted

November 25, 2020

Record last verified: 2020-11

Data Sharing

IPD Sharing
Will not share