Dental Implants
Conditions
Brief summary
The aim of the present study is to test whether there is a difference in the marginal bone level change between implants with and without cantilevers.
Interventions
PROCEDURE1 Implant
PROCEDURE2 Implants
Sponsors
University of Zurich
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* male and female patients 18 years to 80 years of age * no general medical condition which represents a contraindication to implant treatment * two adjacent missing teeth in the maxilla or mandible in positions of premolars and molars * at least one tooth present adjacent to the edentulous space * indication for implant treatment is given * at least 8 mm of vertical bone height in the mandible allowing for the placement of a 6 mm implant (2 mm safety distance to inferior alveolar nerve) * at least 4 mm of vertical bone height in the maxilla * signed informed consent after being informed
Exclusion criteria
* smoking of more than 15 cigarettes a day (clinical studies show an increased failure rate of implants in heavy smokers) * poor oral hygiene after hygienic phase (Plaque Index over 30 %) * active periodontal disease * pregnancy or breastfeeding at date of inclusion
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| radiographic bone level | 5 years | The primary endpoint of the study is the radiographic bone level 5 years after insertion.The bone level represents an indicator of the osseointegration and biological success of the implant. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Implant survival and success | 1, 3, 5, 7, 10 years | — |
| rate of technical complication | 1, 3, 5, 7, 10 years | technical complications: screw loosenings, screw fractures, framework fractures, veneering ceramic fractures |
| Radiographic bone level | 1, 3, 7, 10 years | — |
| Soft tissue changes | 1, 3, 5, 7, 10 years | Soft tissue changes: change in clinical crown length = recession / papilla index |
| Patient morbidity | 1, 3, 5, 7, 10 years | VAS scale to assess pain after implant placement |
| rate of biological complications | 1, 3, 5, 7, 10 years | biological complications: mucositis, assessed by bleeding on probing |
Countries
Switzerland
Outcome results
None listed