complex non-caries cervical lesions in teeth
Conditions
Interventions
total acid etching group:The affected tooth area was isolated by rubber dam, 37% phosphoric acid etching dentin for 30s, irrigation for 30s, and total-etching adhesive in the cavity (3M Single Bond 2,
Laser etching group:The affected tooth area was isolated by a rubber dam , and the Er:YAG laser (R02 optical fiber, 120mJ, 10Hz, 1.2w, MSP, spot diameter 3mm, 8% water, 4% gas, irradiation distance 5m
self acid etching group:The affected tooth area is isolated by rubber dam, 37% phosphoric acid etching enamel for 30s, rinsing for 30s, the cavity is coated with self-etching adhesive (3M Single Bond
Sponsors
Third Affiliated Hospital of the People's Liberation Army of China Air Force Military Medical University (formerly the Fourth Military Medical University).
Eligibility
Sex/Gender
All
Age
18 Years to 60 Years
Inclusion criteria
Inclusion criteria: Patients with refractory non-caries neck defects who have repeatedly fallen off their restorations and obvious dentin sensitivity symptoms were selected from January 2025 to June 2026. 1) Age 18-60 years old, male or female; 2) The patient has a defect in the neck of the tooth, which is located in the middle or deep layer of dentin, and the depth of the defect is between 1-2 mm, and it needs to be filled; 3) There is no caries and other types of tooth defects in the neck of the affected tooth; 4) The affected tooth has symptoms of dentin sensitivity; 5) The affected tooth has one or more fillings falling out; 6) The patient has signed the informed consent form.
Exclusion criteria
Exclusion criteria: 1) The tooth has symptoms of pulpitis; 2) The affected tooth has received professional desensitization treatment within 6 months; 3) The affected tooth has a neck defect, but there is no sensitive and uncomfortable symptoms; 4) the patient's subjective unwillingness to undergo laser treatment; 5) The patient has received periodontal treatment within 3 months; 6) The patient has a severe systemic disease and is unable to tolerate the operation; 7) The patient is pregnant or lactating; 8) Patients who are participating in other clinical trials during the same period and have an impact on the results of existing clinical trials.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Cold diagnosis stimulus + VAS pain score evaluation; | — |
Secondary
| Measure | Time frame |
|---|---|
| Airflow stimulation + VAS pain score evaluation;Mechanical stimulation + VAS pain score evaluation;Pulp electrical viability test;Imaging tests;Fill tightness check;Staining of the edges of the filling;Check the retention of the filling; | — |
Countries
China
Contacts
Public ContactHuang li
Third Affiliated Hospital of the People's Liberation Army of China Air Force Military Medical University (formerly the Fourth Military Medical University).
Outcome results
None listed