Fully-impacted mandibular third molar
Conditions
Interventions
experimental group:Exsanguinate the patient's own blood to prepare for CGF and then put CGF into distal side of mandibular second molar in the operating area after the extraction of fully-impacted man
control group:Directly suture the wound after the extraction of fully-impacted mandibular third molar.
Sponsors
Oral and Maxillofacial Surgery, the Affiliated Stomatology of Tongji University
Eligibility
Sex/Gender
All
Age
18 Years to 50 Years
Inclusion criteria
Inclusion criteria: 1. The patient is aged from 18 to 50 years old with no limit of gender and needs the extraction of impacted mandibular third molar. 2. The patient's unilateral or bilateral mandibular third molars are both fully-impacted. 3. The patient's distal intrabony defect of unilateral or bilateral mandibular second molars adjacent to mandibular third molars are > 4mm. 4. The patient's unilateral or bilateral mandibular third molars are low-level mesial/horizontal impacted, and the sagittal inclination of them are >= 50 degrees. 5. The imaging results show that the area where distal roots of mandibular second molars contact with mandibular third molars have preoprative absorption. 6. The patient volunteer to participate in this clinical trial and is able to take follow-ups on time. 7. The patient is able to consciously keep operating area clean and maintain oral hygiene.
Exclusion criteria
Exclusion criteria: 1. The patient's unilateral or bilateral mandibular second molar is III degrees loosened,fractured, or has incomplete root canal treatment history or severe apical inflammation causing it unable to keep. 2. The patient's unilateral or bilateral mandibular second molar has Amalgam filling which infects the imaging results. 3. The patient's unilateral or bilateral mandibular second molar has severe undercontrolled periodontal disease. 4. There is dentigerous cyst or other oral maxilofical tumors around the patient's mandibular third molar. Or the patient is in the treatment of other oral and maxillofacial tumors. 5. The patient has an uncontrolled history of diabetes, alcohol abuse, blood disease, severe smoking, mental illness or other serious systemic diseases. 6. The patient is pregnant or in lactation or prepares to be pregnant during the trial. 7. The patient's operating area has acute inflammation such as pericoronitis or mandibular alveolar abscess. Or the operating area has history of long-term chronic pericoronitis or apical periodontitis. 8. The patient is under orthodontic treatment. 9. The patient cannot follow doctor's orders and coorparate in the trial,which causes the incompletion of data collection and record thus infect the results of the trial.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| distal probing pocket depth of mandibular second molar;distal intrabony defect of mandibular second molar;distal osseous defect depth of mandibular second molar; | — |
Countries
China
Contacts
Public ContactKang Feiwu
Oral and Maxillofacial Surgery, the Affiliated Stomatology of Tongji University
Outcome results
None listed