beta
Trial Radar AI
Clinical Trial NCT04769921 (AO4ContProt) for Edentulous Jaw is active, not recruiting. See the Trial Radar Card View and AI discovery tools for all the details. Or ask anything here.
One study matched filter criteria
Card View
Back to Search

Full Arch Rehabilitations Through the Contemporary All-on-4 Concept (AO4ContProt) 43

Active, not recruiting
Clinical Trial NCT04769921 (AO4ContProt) is an observational study for Edentulous Jaw that is active, not recruiting. It started on 19 February 2019 with plans to enroll 43 participants. Led by Malo Clinic, it is expected to complete by 1 August 2025. The latest data from ClinicalTrials.gov was last updated on 21 August 2025.
Brief Summary
It is necessary to generate more evidence on the outcome of contemporary protocols for full-arch rehabilitations supported by implants in immediate function in areas with limited quantity and density bone.

This research project aims to investigate the outcome of fixed prosthetic restorations supported by implants in immediate function for full-arch rehabilitation through the All-on-4 concept contemporary protocol, s...

Show More
Detailed Description
Problem The fixed prosthetic rehabilitation through implants in immediate function is documented without prejudice of the outcome when compared to 2-stage surgery.1 One of the protocols for full-arch fixed prosthetic rehabilitation supported by implants in immediate function is the All-on-Four concept, which is documented with good long-term outcomes in both jaws.

Nevertheless, the protocols suffered a constant evol...

Show More
Official Title

Full Arch Rehabilitations Through the Contemporary All-on-4 Concept

Conditions
Edentulous Jaw
Other Study IDs
  • AO4ContProt
  • AO4ContempProt
NCT ID Number
NCT04769921
Start Date (Actual)
2019-02-19
Last Update Posted
2025-08-21
Completion Date (Estimated)
2025-08
Enrollment (Estimated)
43
Study Type
Observational
Status
Active, not recruiting
Keywords
All-on-4
All-on-four
dental implants
TiUltra
Xeal
Arms / Interventions
Participant Group/ArmIntervention/Treatment
All-on-4 TiUltra and Xeal
Patients rehabilitated in the edentulous maxilla or mandible with an implant supported prosthesis through the All-on-4 Concept (2 anterior implants in the axial position and 2 posterior implants inserted with distal tilting). The implants used will be NobelParallel Conical Connection, with TiUltra surface. The abutments used will be Multi-unit abutments of internal connection with Xeal surface. The immediate prosthes...Show More
dental implants and abutments from Nobel Biocare
The implants will be inserted in an All-on-4 configuration; Abutments will be connected to the implants and serve as support for a full-arch implant-supported restoration.
Primary Outcome Measures
Outcome MeasureMeasure DescriptionTime Frame
Prosthetic survival
Survival of the implant-supported prosthesis at the end of the follow-up period
annually up to 3 years of follow-up
Dental implants survival
Survival of the dental implants at the end of the follow-up period
annually up to 3 years of follow-up
Secondary Outcome Measures
Outcome MeasureMeasure DescriptionTime Frame
Marginal bone loss
Evaluation of marginal bone loss by comparing bone levels at evaluation points with baseline (day of surgery)
1-, 2- and 3-years
Plaque index
Evaluation of the modified Plaque Index at designated time points
1-, 2- and 3-years
Bleeding index
Evaluation of the modified Bleeding Index at designated time points
1-, 2- and 3-years
Probing pocket depts
Evaluation of the probing pocket depths in millimeters in 4 points on each implant and recoded in "\</ 4 mm" and "\> 4 mm"
1-, 2- and 3-years
Participation Assistant
Eligibility Criteria

Eligible Ages
Adult, Older Adult
Minimum Age
18 Years
Eligible Sexes
All
Accepts Healthy Volunteers
Yes
  • Patients with enough bone quantity to be rehabilitated through the contemporary All-on-4 protocol using standard implants (7 to 25 mm of length);
  • Patients that are interested in performing their follow-up and maintenance program at Maló Clinic);
  • Patients that provide written informed consent to participate.

  • Patients without enough bone quantity to be rehabilitated with the need of inserting zygomatic implants;
  • Patients that exhibit bone graft reconstructions;
  • Hindrance to provide written informed consent
Malo Clinic logoMalo Clinic
Nobel Biocare logoNobel Biocare
No contact data.
1 Study Locations in 1 Countries

Lisbon District

Malo Clinic, Lisbon, Lisbon District, 1600-042, Portugal