apical periodontitis
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Patients aged from 18 to 59 years old 2. Teeth with persistent symptoms due to failure of conventional root canal therapy and apical surgery 3. The proximity of mandibular molars to important anatomical knots makes apical surgery impossible, such as mandibular molars close to the mandibular nerve canal, mandibular premolars close to the mental foramen, and some maxillary teeth close to the maxilla 4. Abnormal root surface groove of lateral incisors reaching to the root apex 5. Refractory apical infection of the mandibular second molar 6. Good compliance, able to participate in the 12-month follow-up 7. Good general condition 8. Written informed consent was obtained
Exclusion criteria
Exclusion criteria: 1. Systemic diseases (diabetes, osteoporosis, heart disease, etc.) 2. Periodontitis with extensive alveolar bone loss 3. Alveolar bone defect in furcation area or large furcation Angle 4. The large area of tooth tissue defect cannot be restored by restoration treatment 5. Teeth with root fracture or apical microfracture 6. Teeth with root canal perforation 7. Teeth with incomplete apical foramina 8. Teeth with root resorption into the middle or crown third of the root 9. Medications that may affect soft tissue status (e.g., warfarin and non-steroidal anti-inflammatory drugs) within one month before treatment 10. Women who are pregnant or preparing to become pregnant 11. Unwillingness to participate in this study
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| accuracy;Operation time; | — |
Secondary
| Measure | Time frame |
|---|---|
| prognostic evaluation;Soft tissue healing;Postoperative pain and swelling; | — |
Countries
China
Contacts
School and Hospital of Stomatology