K08
Conditions
Interventions
Group 1: In the area of the first molar on the left and right, a short implant is inserted and heals under the gums for 3 months according to the specifications of the implant protocol. It is then reo
Sponsors
Inselspital Bern
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: The present study included patients with mandibular bilateral free-end situations (Kennedy class I), wearing RPDs. At least the second premolars, as well as the molars had to be replaced by the RPD. All subjects that intended to join the planned study had to fill a general and dental history, and were evaluated afterward clinically and radiographically. For the radiographic evaluation, 2 mm steel balls were temporarily luted to the existing dentures, to determine the vertical bone height in an orthopantomogram (OPT). The eligibility criteria were as follows: - Minimum age of 18 years - Anterior residual dentition or implants - Bilateral free-end saddle situation with at least missing second premolars, and molars - Minimum vertical and horizontal bone quantity of 7 mm - Acceptable mandibular RPD according to the criteria of the Department of Reconstructive Dentistry and Gerodontology, University of Bern - Periodontally healthy - Natural/ artificial antagonistic dentition, at least up to the first molar
Exclusion criteria
Exclusion criteria: Psychological exclusion criteria are: • Subjects who are not ready to come to the follow-up appointments • Test persons who are unwilling to submit to the random assignment to the therapy groups • Alcohol or drug addicts subjects • Subjects with pathologically increased fear of dental treatment Systemic exclusion criteria are: • pregnancy • diabetes mellitus not ceased • Z.n. Radiation in the head and neck area • Infectious diseases such as active tuberculosis, acute hepatitis, HIV • drug immunosuppressive therapy • General illnesses that endanger a follow-up examination over a period of approx. 1 year • Osteopathies, e.g. Paget's disease • Taking medication that can negatively affect bone metabolism, e.g. bisphosphonates. • General illnesses that do not allow the described treatment process Local exclusion criteria are: • Pronounced xerostomia • Subjects with insufficient bone bed for an implantation (no augmentation permitted) • Myoarthropathies • Subjects with inadequate oral hygiene • Subjects with untreated or unhealed oral mucosa or periodontal disease • Extraction in the area of ??the planned implants less than 6 months ago (unhealed ex-alveolus)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Final evaluation whether the study participant chooses a ball-abutment or a dome-abutment. | — |
Secondary
| Measure | Time frame |
|---|---|
| -Differences between the two variants with regard to the change in oral health-related quality of life (OHIP G 53 questionnaire) - Hygiene of the two variants: clinical plaque index - Clinical differences in peri-implant soft tissue health: Indices: BOP, PD - Bone stability around the implants: measurement of standardized X-ray images | — |
Countries
Switzerland
Contacts
Public ContactNorbert Enkling
Inselspital Bern
Outcome results
None listed