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Dentine HypersensitivityNCT06633627

Neurological Responses in Patients with Dentine Hypersensitivity

An observational study of Dentine Hypersensitivity, run by Sheffield Teaching Hospitals NHS Foundation Trust at 1 site in United Kingdom.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

Dentine hypersensitivity (also known as sensitive teeth) is a common dental condition in which the dentine, a layer of sensitive hard tissue under the enamel of the teeth, becomes exposed making the teeth sensitive to stimuli, such as hot and cold. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Dentine Hypersensitivity
What is being tested?
Recording of brain activity using electroencephalography (EEG)
How many people
60 participants
Where
1 siteUnited Kingdom
Study dates
11 Oct 2024to 30 Sep 2025
Phase
Observational
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 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: Patients attending routine restorative appointments at Charles Clifford Dental Hospital in Sheffield will be screened as potential eligible participants for the study by members of the direct clinical care team and informed about the study.

Who may be able to join

  • Adults 18 years and older;
  • Understands and is willing, able and likely to comply with all study procedures and restrictions;
  • Accepts the form of the study and signs a declaration of informed consent;
  • In good health (in the opinion of the clinical dental professional);
  • A minimum of 10 teeth not including teeth with crowns or bridges from upper right 4 to upper left 4 and lower right 4 to lower left 4;
  • For patients with dentine sensitivity only (experimental group): self-reported sensitivity in at least 1 tooth; confirmed by response to air puff.

Who cannot join

  • Adults currently using maxillary or mandibular orthodontic appliances;
  • Obvious signs of untreated caries, which in the opinion of the clinical dental professional, will affect the scientific validity of the study;
  • Periodontal pocket depth ≥4mm in the anterior upper or lower sextants;
  • Evidence of periodontitis.
  • Have a history of seizures;
  • Taking medications that affect brain responses;
Show all 9Show fewer
  • Experience damaged skin on the scalp due to cuts, psoriasis, eczema, or other conditions;
  • Any participant who in the investigator's judgment will not comply with the study protocol;
  • Any participant who has difficulties in adequate understanding of English.

Trial locations and contacts

1 site in 1 country.

Fiona Boissonade, BDS, PhD contact

+441142159314

f.boissonade@sheffield.ac.uk

Natalie Wong, PhD contact

natalie.wong@sheffield.ac.uk

United Kingdom1 site, 1 recruiting
  • Sheffield Teaching Hospitals NHS Foundation Trust

    Sheffield, S10 2JF

    Alessia Dunn, 01142712550, alessia.dunn@nhs.net

    Fiona Boissonade, BDS, PhD

    Recruiting

Other trials in United Kingdom

About this study

Official title: Identification and Quantification of Neurological Responses in Patients with Dentine Hypersensitivity

Dentine hypersensitivity (also known as sensitive teeth) is a common dental condition in which the dentine, a layer of sensitive hard tissue under the enamel of the teeth, becomes exposed making the teeth sensitive to stimuli, such as hot and cold. It poses a significant challenge for clinicians and affects patients' quality of life.

The overall aim of the study is to understand if a way of measuring brain activity (electroencephalography [EEG]) shows a response to tooth stimulation, and see how these responses may be different in patients with dentine sensitivity.

Read more

EEG records brain signals and can provide information about how the brain processes painful stimuli. EEG recording is a non-evasive and painless procedure. It involves using a cap with small sensors called electrodes to pick up brain signals. During the EEG assessment appointment, brain signals will be recorded throughout the duration when cold temperatures and short bursts of air are applied to the tooth. Brain signals recorded during tooth stimulation from participants with and without dentine sensitivity will then be compared to explore if there are any differences.

The investigators hope that EEG responses could be helpful to objectively assess dentine sensitivity, further the understanding of brain processing of dental pain, and allow the comparison of the effectiveness of different treatment options in the future.

This information may help to improve treatments and the quality of life for patients with dentine sensitivity and potentially other types of dental pain.

Read the detailed description

Dentine hypersensitivity (DH) is a common dental condition that has been defined as a 'short, sharp pain arising from exposed dentine in response to stimuli typically thermal, evaporative, tactile, osmotic or chemical and which cannot be ascribed to any other form of dental defect or pathology'. Many DH interventions have been investigated over the last 60 years, but a lack of standardisation of pain measurement and objectivity of measures are major limitations for assessing the efficacy of products (or understanding why products fail). A potential solution to this problem is greater understanding of the pain propagation mechanism from controlled stimulus to objective, measurable markers of pain severity.

EEG (electroencephalography) is a non-invasive technique that measures the electrical activity of the brain using the electrodes placed on the scalp. EEG provides information about the brain's electrical activity over time, helping diagnose and understand certain neurological conditions. The investigators have carried out a number of studies using human dental pulp and other human tissue to further understand the mechanisms of pain including pulpal pain.

Evoked potentials are EEG responses to specific stimuli, such as light, sound or heat. Pain-evoked potentials from tooth pulp are evoked potentials specifically related to pain originating from the pulp of a tooth. This type of measurement records the brain's electrical response to a stimulus applied to a tooth, such as thermal stimuli. The resulting EEG recording can provide information about how the central nervous system processes painful stimuli, including the speed and magnitude of the response. It was hypothesised that EEG pain-evoked potentials, if generated and measured in a controlled and repeatable way, can potentially be used (in conjunction with other diagnostic methods) to objectively evaluate the severity of dentine sensitivity and compare the efficacy of different treatment options.

Being tested
Recording of brain activity using electroencephalography (EEG)
Keywords
Electroencephalography, Dentine Hypersensitivity
Medical subject headings
Dentin Sensitivity

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Recording of brain activity using electroencephalography (EEG)Other

    Electroencephalography (EEG) responses to sensitivity stimuli applied to the teeth in patients with and without dentine hypersensitivity will be compared

Study groups in NCT06633627
Study groupRoleWhat they receive
ExperimentalPatients with dentine sensitivity
Receives: Other: Recording of brain activity using electroencephalography (EEG)
ControlPatients without dentine sensitivity
Receives: Other: Recording of brain activity using electroencephalography (EEG)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Electroencephalography (EEG) responses to tooth stimulation

    EEG responses to tooth stimulation will be measured, and EEG responses will be compared between participants with and without sensitive teeth

    Measured: 1 hour

Secondary outcomes (1)
  1. Correlation between Dentine hypersensitivity experience questionnaire (DHEQ) score and EEG responses

    Participants will be asked to complete the Dentine Hypersensitivity Experience Questionnaire (DHEQ). The DHEQ has 48 questions of which 34 comprise an impact scale. The DHEQ score is calculated as the sum of the scores from the questions, with a possible range of 34-238. A higher DHEQ score indicates that dentine hypersensitivity has a greater impact on the participant's quality of life.

    DHEQ score will be correlated with EEG responses recorded during tooth stimulation.

    Measured: 30 minutes

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Oct 2024
  2. Study start11 Oct 2024 (estimated)
  3. Primary completion31 Jul 2025 (estimated)
  4. Study completion30 Sep 2025 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case-control
Time perspective
Prospective
Enrolment
60 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06633627
Sponsor's protocol ID
STH22405
Other IDs
230613
Status last verified
Oct 2024
First submitted
2 Oct 2024
Last updated
9 Oct 2024
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: The summary protocol and results summary will be shared. No identifiable information from the participants will be shared.

Publications

  • Rodd HD, Boissonade FM. Substance P expression in human tooth pulp in relation to caries and pain experience. Eur J Oral Sci. 2000 Dec;108(6):467-74. doi: 10.1034/j.1600-0722.2000.00924.x.

    PubMed 11153921
  • Rodd HD, Boissonade FM. Innervation of human tooth pulp in relation to caries and dentition type. J Dent Res. 2001 Jan;80(1):389-93. doi: 10.1177/00220345010800011601.

    PubMed 11269734
  • Rodd HD, Boissonade FM. Comparative immunohistochemical analysis of the peptidergic innervation of human primary and permanent tooth pulp. Arch Oral Biol. 2002 May;47(5):375-85. doi: 10.1016/s0003-9969(02)00012-2.

    PubMed 12015218
  • Rodd HD, Boissonade FM. Immunocytochemical investigation of immune cells within human primary and permanent tooth pulp. Int J Paediatr Dent. 2006 Jan;16(1):2-9. doi: 10.1111/j.1365-263X.2006.00682.x.

    PubMed 16364087
  • Biggs JE, Yates JM, Loescher AR, Clayton NM, Boissonade FM, Robinson PP. Vanilloid receptor 1 (TRPV1) expression in lingual nerve neuromas from patients with or without symptoms of burning pain. Brain Res. 2007 Jan 5;1127(1):59-65. doi: 10.1016/j.brainres.2006.10.014. Epub 2006 Nov 14.

    PubMed 17109831
  • Bird EV, Robinson PP, Boissonade FM. Na(v)1.7 sodium channel expression in human lingual nerve neuromas. Arch Oral Biol. 2007 May;52(5):494-502. doi: 10.1016/j.archoralbio.2006.11.011. Epub 2007 Jan 8.

    PubMed 17210118
  • Rodd HD, Boissonade FM, Day PF. Pulpal status of hypomineralized permanent molars. Pediatr Dent. 2007 Nov-Dec;29(6):514-20.

    PubMed 18254423
  • Morgan CR, Bird EV, Robinson PP, Boissonade FM. TRPA1 expression in human lingual nerve neuromas in patients with and without symptoms of dysaesthesia. Neurosci Lett. 2009 Nov 13;465(2):189-93. doi: 10.1016/j.neulet.2009.08.055. Epub 2009 Aug 26.

    PubMed 19715741
  • Kaewpitak A, Bauer CS, Seward EP, Boissonade FM, Douglas CWI. Porphyromonas gingivalis lipopolysaccharide rapidly activates trigeminal sensory neurons and may contribute to pulpal pain. Int Endod J. 2020 Jun;53(6):846-858. doi: 10.1111/iej.13282. Epub 2020 Mar 23.

    PubMed 32058593
  • Solis-Castro OO, Wong N, Boissonade FM. Chemokines and Pain in the Trigeminal System. Front Pain Res (Lausanne). 2021 Jul 9;2:689314. doi: 10.3389/fpain.2021.689314. eCollection 2021.

    PubMed 35295531
  • Azab AM, Ahmadi H, Mihaylova L, Arvaneh M. Dynamic time warping-based transfer learning for improving common spatial patterns in brain-computer interface. J Neural Eng. 2020 Feb 18;17(1):016061. doi: 10.1088/1741-2552/ab64a0.

    PubMed 31860902
  • Arvaneh M, Robertson IH, Ward TE. A P300-Based Brain-Computer Interface for Improving Attention. Front Hum Neurosci. 2019 Jan 4;12:524. doi: 10.3389/fnhum.2018.00524. eCollection 2018.

    PubMed 30662400
  • Hu X, Racek AJ, Bellile E, Nascimento TD, Bender MC, Toback RL, Burnett D, Khatib L, McMahan R, Kovelman I, Ellwood RP, DaSilva AF. Brain Functional Changes before, during, and after Clinical Pain. J Dent Res. 2018 May;97(5):523-529. doi: 10.1177/0022034517750136. Epub 2018 Jan 11.

    PubMed 29324076
  • Schiff T, Dotson M, Cohen S, De Vizio W, McCool J, Volpe A. Efficacy of a dentifrice containing potassium nitrate, soluble pyrophosphate, PVM/MA copolymer, and sodium fluoride on dentinal hypersensitivity: a twelve-week clinical study. J Clin Dent. 1994;5 Spec No:87-92.

    PubMed 8534380
  • Addy, M., Dentine hypersensitivity: new perspectives on an old problem. International Dental Journal, 2002. 52(5): p. 367-375.

Questions about this trial

What is this clinical trial studying?

An observational study of Dentine Hypersensitivity, run by Sheffield Teaching Hospitals NHS Foundation Trust at 1 site in United Kingdom.

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 6 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: status not confirmed, as of the sponsor's last update on 9 Oct 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 United Kingdom. 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.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Fiona Boissonade, BDS, PhD (+441142159314, f.boissonade@sheffield.ac.uk), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Electroencephalography (EEG) responses to tooth stimulation (time frame: 1 hour). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06633627, which also lists 15 linked publications.

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 9 Oct 2024.

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