complex non-caries cervical lesions in teeth
Conditions
Interventions
Laser dentin preparation group:The affected tooth area was isolated by rubber dam, Er:YAG laser (R14 fiber, 20mJ, 20Hz, 0.4w, MSP, spot diameter 3mm, 8% water, 4% gas, irradiation distance 5mm, irradi
Laser etching group:The affected tooth area was isolated by a rubber dam, the dentin was prepared by a turbine mechanism to unify the cavity, and the Er:YAG laser (R02 optical fiber, 120mJ, 10Hz, 1.2w
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: Due to the incidence of NCCL, maxillary teeth are more common in mandibular teeth, and the left and right sides are comparable, among which premolars are the most common. Therefore, patients with refractory non-caries neck defects who have repeatedly fallen off their restorations and obvious dentin sensitivity symptoms were selected from June 2024 to December 2025. 1) Age 18-60 years old, male or female; 1) The patient has a defect in the neck of the upper left premolar in the mouth, 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; 2) There is no caries and other types of tooth defects in the neck of the affected tooth; 3) The affected tooth has symptoms of dentin sensitivity; 4) The affected tooth has one or more fillings falling out; 5) 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;Yeaple Electrostress Test Probe + 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