missing teeth in the posterior region, replaced by implant supported single crown
Conditions
Interventions
Group 1: Bonelevel implants with individual two-piece abutments and monolithic ZrO crowns, crown removal after 4 weeks with glasionomer cement
Group 2: Bonelevel implants with individual two-piece abu
Sponsors
Universitätsklinikum Heidelberg,Poliklinik für Zahnärztliche Prothetik
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: Prerequisite for the participation of the patients in the clinical trial is the signature of the consent form of the full-year and fully-operational patient. Only subjects who have received a bonelevel implant which is already osseointegrated and does not have any inflammatory signs during the clinical examination are selected. The patient has to be informed about the treatment alternatives, their advantages and disadvantages as well as their costs and have decided against alternative proposals.
Exclusion criteria
Exclusion criteria: A lack of consent, minority or limited legal capacity leads to the exclusion of patients from the study. No change of the patient's location may be planned. Patients with tissue level implants, pregnant women and breastfeeding mothers, as well as patients with state after radiation in the jaw / facial region or bisphosphonate therapy within the last ten years are also excluded. Patients whose implants already have clinical signs of mucositis or peri-implantitis at the beginning of studies are also not included.
Design outcomes
Secondary
| Measure | Time frame |
|---|---|
| In addition to the cement excess, the peri-implant soft tissue will also be examined for volumetric changes and inflammation parameters. For documentation of inflammatory processes the Gingival Index (GI) will be recorded at different time points. The measurements will be performed at the study implant, the neighbour teeth and one teeth on the opponant site to avoid local effects. Parameter will be the Index-Scale 0-3. To detect volumetric changes the periimplant soft tissue will be recorded by an intraoral scanner at different time points (before insertion of crown, as well as 2 and 4 weeks after insertion of crown). Parameter will be volumetric change in mm3. | — |
Primary
| Measure | Time frame |
|---|---|
| The primary outcome is the relation of cement free to cement afflicted abutment/crown surface. Immediately after removal of the restoration, photographs of the implant and surrounding tissues will be taken perpendicularly by use of an intraoral occlusal dental mirror. All four quadrants of the crown–abutment complex will be, furthermore, photographed by use of a device specially constructed to maintain a standardized distance between the camera and the restoration. The images will be imported into, and analyzed by use of a Computer Programme for image editing. | — |
Countries
Germany
Contacts
Public ContactStefanie Kappel
Universitätsklinikum Heidelberg,Poliklinik für Zahnärztliche Prothetik
Outcome results
None listed