CClinicalTrials.gg
Status unknownNCT05436158Updated Jun 28, 2022

The Use of a New Safe Angle Position for Implant Placement in the Anterior Region.

An observational study in Immediate Implant Placement, Esthetic Zone and Anterior Maxilla, sponsored by Cairo University. Status unknown at 2 sites in Egypt. Open to participants aged 21 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-06-28.

Sponsored by Cairo University · Observational

The sponsor has not verified this record recently (last verified Jun 2022), so the status shown — last known as Recruiting — may be out of date.
Study type
Observational
Model
Other
Time perspective
Cross-sectional
Enrollment
100
Ages
21 Years and older
Sex
All
01

Study summary

There is an angle between the intersection of the incisal long axis perpendicular to the palate or the occlusal plane, and the long axis of the root. When this relation is shifted more palatal, where the incisal plane line will be at the cingulum position or slightly palatal to it, it is named the safe angle position. The more palatal relocation to the cingulum is performed according to the availability of palatal bone, the occlusion with the opposing dentition, the type of the restoration (screw vs cemented).

The possibility of having a specific safe angle to place implants opens new interesting perspectives for immediate placement of dental implants.

The aim of the present study was to demonstrate how immediate implants in the safe angle position can be predictably achieve proper implant positioning, better esthetics and emergence profile as well as less stresses on the implant.

Read the detailed description

Immediate implants are implants inserted immediately after surgical extraction of the teeth to be replaced. Creation of an anatomically correct emergence profile is one of the most important aspects in providing an esthetically pleasing implant-supported restoration. Dentists understand the risks involved when restored prostheses are subjected to non-axial loading. It has always been recommended to direct occlusal loads as close to the long axis of the fixture as possible. However, it is known that the loading on angled abutments is mostly off-axis, which raises the concern of how angled abutments generally perform with such an unfavourable loading regimen.

There is an angle between the intersection of the incisal long axis perpendicular to the palate or the occlusal plane, and the long axis of the root. When this relation is shifted more palatal, where the incisal plane line will be at the cingulum position or slightly palatal to it, it is named the safe angle position. The more palatal relocation to the cingulum is performed according to the availability of palatal bone, the occlusion with the opposing dentition, the type of the restoration (screw vs cemented).

The possibility of having a specific safe angle to place implants opens new interesting perspectives for immediate placement of dental implants.

The aim of the present study was to demonstrate how immediate implants in the safe angle position can be predictably achieve proper implant positioning, better esthetics and emergence profile as well as less stresses on the implant.

02

Conditions studied

  • Immediate Implant Placement
  • Esthetic Zone
  • Anterior Maxilla
  • Safe Angle Position

Keywords

  • Immediate dental implants
  • anterior maxilla
  • safe angle position
03

In context

Lead sponsor

Cairo University is the lead sponsor of 4,780 studies on the registry; 1,427 are open to participants now.

Of its 36 completed or terminated interventional studies of FDA-regulated products, 5 (14%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
21 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Patients with immediate implants in the anterior region

Inclusion criteria

  1. Patients with immediate implants in the anterior region
  2. Patient with preoperative and postoperative CBCT
  3. Provide informed consent.

Exclusion criteria

Exclusion Criteria:

  1. patients without a preoperative CBCT.
  2. 2- patients without an informed consent.
05

Study design

Observational model
Other
Time perspective
Cross-sectional
Enrollment
100 participants (estimated)
Patient registry
No

Interventions

  • OtherImplant placement in the safe angle position in the anterior maxilla

    After assessing the CBCT of patients, the immediate implants will be assessed if they were placed in the safe zone. the safe zone is described as; that there is an angle between the intersection of the incisal long axis perpendicular to the palate or the occlusal plane, and the long axis of the root. When this relation is shifted more palatal, where the incisal plane line will be at the cingulum position or slightly palatal to it, it is named the safe angle position. The more palatal relocation to the cingulum is performed according to the availability of palatal bone, the occlusion with the opposing dentition, the type of the restoration (screw vs cemented).

06

What researchers measure

Primary outcomes

  1. presence of the implant in the safe angle

    binary (Y/N) from CBCT

    Time frame: 6 months

  2. use of angled or straight abutment

    Binary (straight/angled)

    Time frame: 6 months

Secondary outcomes

  1. Pink Esthetic Score

    Pink Esthetic Score (1-14)

    Time frame: 6 months

07

Study locations

2 of 2 sites recruiting
  • International Dental Continuing Education
    Cairo, Maadi 11728, Egypt
    Recruiting
  • Faculty of Dentistry, Cairo University
    Cairo, Manial 35855, Egypt
    Recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 28, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05436158
Lead sponsor
Cairo University
Responsible party
Nesma Mohamed Fouad Shemais (Lecturer in the department of Oral Medicine & Periodontology, Cairo University) — Principal investigator
First posted
Jun 28, 2022
Start date
May 1, 2022
Primary completion
Aug 2022 (estimated)
Completion
Sep 2022 (estimated)
Last update
Jun 28, 2022

Study contacts

Nesma M Shemais, PhD
Contact
nesma.shemais@dentistry.cu.edu.eg
01005615697
Noha A Ghallab, PhD
Contact
noha.ghallab@dentistry.cu.edu.eg
Noha A Ghallab, PhD
study chair · Professor of Oral Medicine & Periodontology
Ahmed I Abou- El-Fettouh, MSc
principal investigator · MIU
Abdelrahman Zohny, BDs
principal investigator · MIU
Nael M Adel, BDs
principal investigator · MIU
Mariam S Abdelmalak, BDs
principal investigator · MIU
Nesma M Shemais, PhD
principal investigator · Lecturer of Oral Medicine & Periodontology, Cairo University

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Jun 2022. You cannot join it, but the record below documents what was studied.

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