Two Implants Versus One Implant With a Cantilever - a Randomized Controlled Clinical Trial

University of Zurich (UZH)

Status: Active, not recruiting

Conditions: Dental Implants

Treatments: Procedure: 1 Implant; Procedure: 2 Implants

Study type: Interventional

Funder types: Other

Identifiers

NCT01649531

2012-0097

Details and patient eligibility

About

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.

Enrollment: 36 patients

Sex: All

Ages: 18 to 80 years old

Volunteers: No Healthy Volunteers

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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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36 participants in 2 patient groups

Test group

Active Comparator group

Description:

1 Implant, to be placed in the position with greater vertical bone height with a mesial or distal cantilever.

Treatment:

Procedure: 1 Implant

Control group

Active Comparator group

Description:

2 Implants

Treatment:

Procedure: 2 Implants