An interventional study of Strontium-doped bioactive glass-ceramic-filled dentine adhesive and Universal dentine adhesive in Dentine Hypersensitivity, sponsored by The University of Hong Kong. Recruiting at 2 sites in Hong Kong. Open to participants aged 18 Years to 69 Years. Per ClinicalTrials.gov, last updated 2026-09-21.
Sponsored by The University of Hong Kong · Not applicable, Interventional, and Treatment
The goal of this clinical trial is to determine whether strontium-doped bioactive glass-ceramic (SBGC)-filled dentine adhesive is effective in relieving dentine hypersensitivity. The main question it aims to answer is:
Is SBGC-filled dentine adhesive more effective in reducing dentine hypersensitivity than non-SBGC-filled dentine adhesive?
Researchers will compare SBGC-filled dentine adhesive to a dentine adhesive to see if SBGC-filled dentine adhesive is more effective at relieving dentine hypersensitivity.
Participants will receive a single application of either SBGC-filled dentine adhesive (intervention group) or dentine adhesive (control group) on the root surfaces of teeth presenting with pain subject to an air-blast test. The degree of pain will be assessed using a Sensitivity Score at baseline, immediately after application of either the intervention dentine adhesive or control dentine adhesive. The participants will visit the clinic at 1 month, 3 months and 6 months for re-assessment of the severity of dentine hypersensitivity.
Subjects aged 18-69 years who have experienced cervical dentine hypersensitivity for 1 month or more will be identified and recruited from those attending routine check-ups at a university teaching hospital, the Prince Philip Dental Hospital. Those who have poor dental conditions, such as severe periodontal conditions, or the sensitive tooth has undergone restorative treatment, or any other condition that potentially threatens the validity of the outcomes, will be excluded.
Each participant will undergo a baseline clinical examination to explore their level of oral hygiene, presence of dental caries and restorations, and their periodontal conditions. The participants will be asked to indicate the sensitive tooth/teeth, which will then be isolated and tested with a continuous air blast for 5 seconds using a 3-in-1 syringe. They will rate the degree of pain of the tooth under assessment using a Sensitivity Score that ranges from 0 to 10, where 0 indicates no discomfort and 10 indicates maximal pain causing significant distress.
Randomization will be conducted at the subject level in a 1:1 ratio. Subjects who have at least one hypersensitive tooth with an SS score of 8 or above will be randomly allocated to one of the two study groups.
Socio-demographic information regarding age and gender; education level; type of housing resided; number and types of medications; health/medical conditions; dietary habits; tobacco use; oral hygiene habits including toothbrushing habits; and dental visit behaviour will be recorded.
After the baseline clinical examination, participants in the intervention group will receive a single application of a bioactive glass ceramic-filled universal dentine adhesive, whereas those in the control group will receive a single application of the same universal dentine adhesive without bioactive glass ceramic. The study participants will be followed for 6 months. Assessment for dentine hypersensitivity will be conducted immediately after the intervention, at the 1-month, 3-month and 6-month follow-up visits using the same equipment and diagnostic criteria by the same examiner.
288 studies on the registry are indexed under Dentin Sensitivity; 46 are open to participants now.
This study's planned enrollment of 142 is above the median of 60 across 279 interventional studies indexed under Dentin Sensitivity.
Browse Dentin Sensitivity studies →The University of Hong Kong is the lead sponsor of 1,292 studies on the registry; 348 are open to participants now.
Of its 9 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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Exclusion Criteria:
A single application of a universal dentine adhesive
Other: Universal dentine adhesive
A single application of strontium-doped bioactive glass ceramic-filled dentine adhesive
Drug: Strontium-doped bioactive glass-ceramic-filled dentine adhesive
Strontium-doped bioactive glass-ceramic-filled dentine adhesive Strontium-dope bioactive glass-ceramic: Dencare (Chongqing) Oral Care Company Limited Dentine adhesive: ScotchbondTM Universal Adhesive, 3M ESPE, Deutschland GmbH, Neuss, Germany
universal dentine adhesive (ScotchbondTM Universal Adhesive, Neuss, Germany)
Severity of dentine hypersensitivity measured by a sensitivity score
The tooth/teeth with dentine hypersensitivity will be identified. A 3-in-1 air syringe will be used to provide a continuous air blast for 5 seconds. The participants will rate the degree of pain of all the teeth under assessment using a Sensitivity Score (SS) which is a visual analog scale modified with the addition of adjective words and facial expression diagrams according to the verbal descriptor scale. The SS ranges from 0 to 10, where 0 indicates no discomfort and 10 indicates maximal pain causing significant distress.
Time frame: Baseline, immediately, 1 month, 3 months and 6 months after intervention
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