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Establishment and verification of prediction index of extraction difficulty of mandibular third molar

Establishment and verification of prediction index of extraction difficulty of mandibular third molar

Status
Recruiting
Phases
Early Phase 1
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR2200064040
Enrollment
Unknown
Registered
2022-09-24
Start date
2022-09-19
Completion date
Unknown
Last updated
2023-04-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

impacted teeth

Interventions

Case series:None

Sponsors

Affiliated Stomatological Hospital of Fujian Medical University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1.Aged above 18 years old and below 65 years old; 2.No hematopoietic, digestive system, autoimmune system, cardiovascular system and other diseases; 3.No symptoms of infection in the whole body; 4.No surgical contraindications; 5.No history of drug allergy; 6.The patient requires the extraction of the mandibular third molar; 7.Meet the indications of mandibular third molar extraction (preventive extraction, orthodontic needs or treatment needs); 8.Agree to shoot CBCT before operation; 9.Patients voluntarily participated in this study, signed the informed consent, and were able to cooperate with clinical follow-up.

Exclusion criteria

Exclusion criteria: 1.Contraindications for oral surgery (poor control of acute or chronic diseases such as hypertension, heart disease, diabetes, hematological diseases, hyperthyroidism, kidney disease, hepatitis, etc.; female pregnancy, menstruation; acute stage of infection; patients with malignant tumors after radiotherapy and chemotherapy; patients with long-term use of anticoagulants, adrenaline and other drugs and neuropsychiatric disorders); 2.Under 18 years of age; 3.Third degree loosening or loss of the adjacent mandibular second molar; 4.Diseases such as cysts or tumors around the mandibular third molars; 5.The treatment is not accepted;

Design outcomes

Primary

MeasureTime frame
Operation time;

Secondary

MeasureTime frame
angle;depth;Space;Root bending;Root morphology;Located in the position of the alveolar bone;Distance of mandibular nerve canal;Second molar relationship;Age;Gender;

Countries

China

Contacts

Public ContactChen Jiang
dentistjiang@sina.com+86 13178118511

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026