Intraoral Scan Versus Conventional Impression in Edentulous Patients With Flabby Ridges

October University for Modern Sciences and Arts

Status: Completed

Conditions: Edentulous Alveolar Ridge; Edentulous Alveolar Ridge With Labial Resorption; Edentulism; Flabby Ridge

Treatments: Procedure: WTI; Procedure: IOS

Study type: Interventional

Funder types: Other

Identifiers

NCT07037407

MSA University REC-D4210-4

Details and patient eligibility

About

In vivo prospective clinical study will be designed, 12 participants will be included. After intraoral scanning, a conventional impression is made for each patient. The groups will be compared for accuracy.

Full description

• Recruit 12 eligible edentulous patients

• Scanning Process: Perform five intraoral scans (IOS) of the maxillary flabby ridges for each patient.

  . WTI: perform five WTI for each patient

• STL Export: Export scans and corresponding cast scans obtained via the Window Technique Impression (WTI) as STL files using the intraoral scanner software.

• 3D Distance Measurement: Import IOS and cast STL files into Geomagic Wrap 2017 for a two-phase best-fit alignment, using the Cast scan as the reference for evaluating trueness and precision.

• Comparison of Scans:

  • Compare the IOS scan and corresponding cast scan obtained via the Window Technique Impression (WTI) to calculate trueness -compare WTI and corresponding cast scan obtained via the Window Technique Impression (WTI) to calculate trueness-
  • Compare each of the five IOS impressions by using each scan as a reference against the others to calculate precision.
  • Compare each of the five WTI impressions by using each scan as a reference against the others to calculate precision. • Deviation Analysis: Generate a color difference map of each superimposition for visual analysis of deviation patterns.

Enrollment: 12 patients

Sex: All

Ages: 50 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria:Inclusion criteria for participant selection will be as follows: 1. completely edentulous patients with maxillary flabby ridge; 2. Absence of infectious diseases; 3. Systemic good health (ASA-1/ASA-2). .; 4. Age between 50 and 75 years; 5. Willingness to cooperate throughout the data collection process.

Exclusion Criteria:Exclusion criteria included: 1. Presence of any remaining teeth; 2. Inability to comprehend the study's objectives and procedures; 3. ridge defect or lesion; 4. Postoperative scarring on the ridge; 5. Limitations in mouth opening.

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Sequential Assignment

Masking: Single Blind

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12 participants in 2 patient groups

WTI

Active Comparator group

Description:

Control: Window technique for Maxillary flabby ridge using two consistencies of PVS impression material then poured to obtain a stone model which will be scanned using a laboratory extra oral scan to convert it into an STL file (WTI)

Treatment:

Procedure: WTI

IOS

Experimental group

Description:

intra oral scanning of flabby ridge

Treatment:

Procedure: IOS