Comparative clinical pilot study on implant-supported reconstructions of two-piece, individually manufactured IPS e.max LS2 press abutments (hybrid abutment) and single-crown prostheses vs. one-piece screw retained IPS e.max LS2 press single-crown prostheses (hybrid-abutment crown)

Comparative clinical pilot study on implant-supported reconstructions of two-piece, individually manufactured IPS e.max LS2 press abutments (hybrid abutment) and single-crown prostheses vs. one-piece screw retained IPS e.max LS2 press single-crown prostheses (hybrid-abutment crown) - Hybrid

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00005680

Enrollment

Registered

2014-02-04

Start date

2013-08-01

Completion date

Unknown

Last updated

2025-11-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

K08.81 K02.9

Interventions

Group 1: Hybrid-abutment + luted all-ceramic single crown (two-piece) Group 2: Hybrid-abutment-crown (one-piece, abutment and crown occlusally screwed)

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: subjects with need implant placement or substitution of a missing tooth, gap size > 7mm

Exclusion criteria

Exclusion criteria: subjects below age 18 or person incapable of contracting, pregnant woman, alcohol or drug addicts, patients with an existing infectious disease as hepatitis or AIDS; patients with existing general disease means a contraindication for implantation; patient with severe diabetes; patient with insufficient oral hygiene (PI > 1, BoP more tha 20% positive), patient with conflict of interest due to their participation in another study; patient participate in another study within one month prior to beginning of the study

Design outcomes

Primary

Measure	Time frame
-Comparative evaluation (hybrid abutment vs. hybrid-abutment crown) of aesthetic appearance of periimplant mucosa over a period of observation of 3 years by spectrophotometric analysis and OHIP	—

Secondary

Measure	Time frame
free of complication survival of both restoration in comparison to another over a period of observation of 3 years by cost-effectiveness analysis	—

Countries

Germany

Contacts

Public ContactMichael Naumann

Zahnärzte an der Kleinmachnower Schleuse

naumann@naumann-kiessling.de03329-63262

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026