Dentition Defect
Conditions
Interventions
experimental group:nonsplinted crowns
control group:splinted crowns
Sponsors
Stomatological Hospital of Peking University
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1. Patients with two or more missing teeth in the posterior area; 2. Patients over 18 years old can cooperate with 3-year follow-up; 3. Objects in good physical condition; 4. After no missing or missing teeth, implant or conventional fixed restoration has been carried out to ensure that each implant prosthesis included has stable occlusal contact; 5. The contralateral homonymous teeth are natural teeth or patients who have been implanted or fixed regularly after missing.
Exclusion criteria
Exclusion criteria: 1. The diameter of the implant is less than or equal to 3.5mm, and the length of the implant is less than or equal to 6.5mm; 2. Implants without occlusal contact with the opposite teeth after restoration; 3. The patients with the same tooth missing or active restoration on the opposite side; 4. Patients with untreated periodontal or dental diseases; 5. Systemic or local diseases may affect postoperative healing or osseointegration; 6. Patients who cannot cooperate with follow-up.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| marginal bone loss;relative occlusal force; | — |
Secondary
| Measure | Time frame |
|---|---|
| per-iimplant probing depth;incidence of complications; | — |
Countries
China
Contacts
Public ContactJuan Wang
Stomatological Hospital of Peking University
Outcome results
None listed