Dentition defect
Conditions
Interventions
Conventional immediate implant group:Posterior immediate implant surgery
Robot-assisted immediate implant group:Robot-assisted implant surgery
Pre-extraction preparation immediate implant group:Pre-extraction alveolar preparation followed by posterior immediate implant surgery
Robot-assisted combined with pre-extraction preparation immediate implant group:Robot-assisted combined with pre-extraction alveolar preparation for posterior immediate implant surgery
Sponsors
Zhongshan Hospital Affiliated to Fudan University
Eligibility
Sex/Gender
All
Age
18 Years to 70 Years
Inclusion criteria
Inclusion criteria: 1. Aged 18-70 years, male or female, in good general condition, with no absolute contraindications to implant surgery (such as uncontrolled diabetes, coagulation disorders, immunocompromised status, etc.) 2. Maxillary or mandibular first/second molars that need to be extracted due to tooth fracture, untreatable pulp disease, or severe caries are eligible for immediate implantation. 3. The alveolar socket types are SI/SII/SIII (classified according to Bleyan et al. 2021): Mandibular molars must satisfy that the distance from the root bifurcation to the mandibular canal is >= 10 mm, and the distance from the root apex to the upper edge of the inferior alveolar canal is >= 5 mm; Maxillary molars must satisfy that the distance from the root apex to the floor of the maxillary sinus is >= 5 mm, without severe maxillary sinusitis. 4. The opening degree is >= 30 mm, and can cooperate with cross-center follow-up and imaging examinations. 5. Sign the informed consent form and be willing to complete the 12-month full follow-up.
Exclusion criteria
Exclusion criteria: 1. Root fusion deformity, active periapical periodontitis, jaw cysts, or acute infection at the implant site 2. Chronic smoking (>=10 cigarettes per day), bruxism, severe periodontal disease (full-mouth periodontal pocket depth >=6 mm) 3. Pregnant or lactating women, or those taking drugs that affect bone metabolism 4. The implant site has undergone jawbone surgery, radiotherapy, or chemotherapy 5. Mental illness, cognitive impairment, or language communication disorder, unable to cooperate with treatment and follow-up 6. Participants in other concurrent oral clinical trials
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Implant angular deviation; | — |
Secondary
| Measure | Time frame |
|---|---|
| Implant position coronal deviation and apical deviation; | — |
Countries
China
Contacts
Public ContactSun Jian
Zhongshan Hospital Affiliated to Fudan University
Outcome results
None listed