Short Implants in the posterior jaw: a clinical study

Recruitment & Eligibility

Status: Pending

Sex: All

Target Recruitment: 40

Inclusion Criteria

Sane adults, i.e., patients capable of giving consent
- Good general health (ASA = 2 [32])
a. Diabetes mellitus should be well controlled (HbA1c <7)
b. Smoking = 20 cigarettes / day
c. No alcohol or drug abuse
- No pathology of bone metabolism
- Patients with periodontitis should be treated successfully, i.e., no residual periodontal infection
- Good oral hygiene and compliance, i.e., plaque level (full-mouth plaque score, FMPS) <25% and bleeding level after probing (full-mouth bleeding on probing score, FMBS) <25%
- A 3D radiographic bone width = 8 mm and a bone height of 5 - 6 mm in the posterior maxilla or 7 - 8 mm in the posterior mandible
A bone height in the posterior maxilla of less than 5 mm is permissible if the existing bone height - in conjunction with an internal sinus lift performed at the same time - allows sufficient primary implant stability.
- Tooth extraction must have taken place at least three months ago
- Existing opposing teeth
- Patients must be willing to adhere to a prevention concept (supportive therapy, UT). This is a routine protocol.
- Written declaration of consent to participate in this study

Exclusion Criteria

- Minors
- Pregnant and breastfeeding patients
- Taking anti-resorptive drugs
- Patients with a known allergy to titanium
- Patients with proven bruxism

Study & Design

Study Type: observational

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Primary study parameter<br><br>The primary study parameter is peri-implant marginal bone level change (?PMK implant) at two short (length = 6 mm), functionally loaded (splinted crowns) implants.<br><br>Determination of the primary study parameter<br><br>Measurement of digital x-rays immediately after implantation, prosthetic loading and yearly after loading.<br>

Secondary Outcome Measures

Name	Time	Method
most important secondary study <br><br>The most important secondary study parameter is the determination of the cumulative implant loss rate (KVimplant).<br><br>Determination of the most important secondary study parameter<br><br>The cumulative implant loss rate at implant level (KVImplant) is calculated as the number of non-surviving implants divided by the number of all implants (intention-to-treat investigation) multiplied by 100 percent.<br>