Effect of Geometric Modifications of Implant Scan Bodies

Mansoura University18 enrolled

Overview

The aim of this clinical study will be the effect of geometric modifications of implant scan bodies compared to conventional transfer techniques on passivity of all on four mandibular restorations

The aim of this study will be the effect of geometric modifications of implant scan bodies compared to conventional transfer techniques on passivity of all on four mandibular restorations. Evaluation method: The trueness of the final impression and the passivity of the final prosthesis will be evaluated by two methods: Invitro evaluation For each patient in every group, the standard tessellation language (STL) files of scanned impressions will be superimposed on the reference file to determine the 3D surface, linear, and angular position analysis. The STL files for both frameworks will be superimposed on the reference file to determine the passivity. In vivo (Clinical) evaluation Radiographic evaluation using long cone parallel technique will be done for the framework after 6 month (T6) after one year (T12), and after 18 month (T18) from insertion.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Prosthesis Durability

Interventions

Implant supported hybrid prosthesisDEVICE

For each patient, implant supported mandibular hybrid prosthesis will be fabricated digitally. Frameworks will be tried in patient's mouth, scanned intraorally by intraoral scanner (IOS).

Eligibility

Sex: ALLMin age: 45 YearsMax age: 70 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * 1\. All selected patients will have four implants placed in the mandibular interforaminal region according to all -on -four concept. 2\. All selected patients have a healthy mucosa and with no clinical complications. 3\. All patients are cooperative and approve the proposed treatment protocol. Exclusion Criteria: * 1\. Patients who reject to participate in the study. 2. Patients who need implant placement as a result of previous implant failure.

Locations (1)

Mansoura University ,Faculty of dentistry

Al Mansurah, Egypt

Outcomes

Primary Outcomes

passivity of the prosthesis

Radiographic evaluation using long cone parallel technique will be done for the framework

Time frame: one year

trueness of final impressions

For each patient in every group, the standard tessellation language (STL) files of scanned impressions will be superimposed on the reference file to determine the 3D surface, linear, and angular position analysis

Time frame: one year

Secondary Outcomes

patient satisfaction

patient satisfaction will be evaluated using Visual analogue scale questionnaire

Time frame: one year

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.