Skip to content

Esthetic Outcome, Clinical Performance, Patient Perception and Cost-Time Efficiency of Implant-supported Single Crowns influenced by the Prosthetic Workflow – a Randomized Clinical Trial in the Esthetic Zone

Esthetic Outcome, Clinical Performance, Patient Perception and Cost-Time Efficiency of Implant-supported Single Crowns influenced by the Prosthetic Workflow – a Randomized Clinical Trial in the Esthetic Zone - Ceramic Esthetic

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
DRKS
Registry ID
DRKS00032124
Enrollment
60
Registered
2023-06-22
Start date
2024-08-14
Completion date
Unknown
Last updated
2025-10-06

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

Conditions

Missing tooth, single tooth gap

Interventions

Group 1: Prosthetic workflow: Using a titanium healing abutment, a provisional phase with a screw retained implant supported provisional, a final restoration with a titanium CAD/CAM abutment and hand

Sponsors

Zentrum für Zahnmedizin, Klinik für Rekonstruktive Zahnmedizin
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. Die Probanden müssen vor jeder studienbezogenen Handlung freiwillig die Einverständniserklärung unterzeichnet haben. 2. Erfolgreich osseointegriertes einzelnes Straumann BLC-Implantat 3,3 mm und 3,75, das mindestens 6–8 Wochen nach der Zahnextraktion eingesetzt wurde. 3. Implantatachse kompatibel mit transokklusaler Schraubenretention (Schraubenzugang palatinal der Inzisalkanten)

Exclusion criteria

Exclusion criteria: 1. Systemic disease that would interfere with dental implant therapy (e.g. uncontrolled diabetes, i.v. bisphosphonate intake) 2. Any contraindications for oral surgical procedures 3. History of local irradiation therapy in the head-neck area 4. Patients who smoke >10 cigarettes per day or tobacco equivalents or chew tobacco 5. Subjects who have undergone administration of any investigational device within 30 days of enrolment in the study 6. Conditions or circumstances, in the opinion of the investigator, which would prevent completion of study participation or interfere with analysis of study results, such as history of non-compliance or unreliability 7. Physical or mental handicaps that would interfere with the ability to perform adequate oral hygiene 8. Pregnant or breastfeeding women 9. Existing implants in the adjacent position 10. Removable dentures in the opposing dentition 11. Patients with inadequate oral hygiene (Periodontal examination PGU > 2) or unmotivated for adequate home care 12. Lack of primary stability of the implant 13. Inappropriate implant position for a screw-retained restoration 14. Severe bruxing or clenching habits

Design outcomes

Primary

MeasureTime frame
To compare the influence of the prosthetic workflow on the overall esthetic outcome: PES/WES index at baseline, 1, 3, and 5 years.

Secondary

MeasureTime frame
Time (in min) and cost (in CHF) analysis of fabrication of final implant crowns •Crestal bone level changes at the implant site (mesial and distal) between baseline and 1, 3, 5 years •Implant survival rate at baseline, 1, 3, 5 years •Mechanical complications / failures at baseline,1, 3, 5 years •Technical complications / failures at baseline,1, 3, 5 years •Plaque assessments on healing abutments •Clinical Parameters: Examination of standard peri-implant soft tissue parameters (mod Pl, BOP, PD, KM) at six sites of each implant (except KM: only buccal) at baseline, 1, 3, 5 years •PICI-Index after baseline, 1, 3, 5 years •Patient questionnaires (PROMs Prothetik) after baseline, 1, 3, 5 years using numerical rating scale (NRS) and OHIP-G14 questionnaire

Countries

Switzerland

Contacts

Public ContactDaniel Thoma

Zentrum für Zahnmedizin, Klinik für Rekonstruktive Zahnmedizin

daniel.thoma@zzm.uzh.ch+41 44 634 43 05

Outcome results

None listed

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