Accuracy of Scannable Healing Abutments for Implant Impressions

NCT07393269 | Completed

• 1 other identifier: 33-6-25
• Study Type: interventional
• Target: 22
• Locations: 1 country
• Sites: 1

Brief Summary

This prospective controlled clinical trial evaluates the three-dimensional positional accuracy of implant-level impressions obtained using scannable healing abutments compared with conventional open-tray and closed-tray impression techniques in partially edentulous patients with unilateral free-end saddle situations.

Conditions

Partially Edentulous Maxilla, Mandible

Keywords

Dental Impression Technique; Intraoral Scanning; Partial Edentulism; Digital Dentistry; Dental Implants

Outcome Measures

Primary Outcomes (1)

• Three-dimensional implant positional accuracy (RMS deviation)

  Root mean square (RMS) deviation (µm) between test impressions and the open-tray reference model using 3D metrology software.

  Periprocedural (single assessment, 1 week after second-stage implant surgery)

Secondary Outcomes (1)

• Comparison of implant positional accuracy between impression techniques

  Periprocedural (single assessment, 1 week after second-stage implant surgery)

Study Arms (3)

Scannable Healing Abutment Digital Impression

EXPERIMENTAL

Intraoral digital impression using scannable healing abutments and an intraoral scanner.

Procedure: Digital implant impression using scannable healing abutments

Open-Tray Conventional Impression

ACTIVE COMPARATOR

Conventional splinted open-tray implant impression using polyvinyl siloxane.

Procedure: Open-tray implant impression

Closed-Tray Conventional Impression

ACTIVE COMPARATOR

Conventional closed-tray implant impression using polyvinyl siloxane.

Procedure: Closed-tray implant impression

Interventions

Digital implant impression using scannable healing abutments PROCEDURE

Digital acquisition of implant position using intraoral scanning of scannable healing abutments following second-stage surgery.

Scannable Healing Abutment Digital Impression

Open-tray implant impression PROCEDURE

Conventional open-tray implant-level impression using splinted impression copings and polyvinyl siloxane material.

Open-Tray Conventional Impression

Closed-tray implant impression PROCEDURE

Conventional closed-tray implant-level impression using transfer copings and polyvinyl siloxane material.

Closed-Tray Conventional Impression

Eligibility Criteria

• Age: 40 Years - 70 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Partially edentulous patients with unilateral free-end saddle (Kennedy Class II)
• Adequate bone for two implants
• Good systemic health
• Ability to provide informed consent

You may not qualify if:

• Active periodontal disease
• Poor oral hygiene
• Parafunctional habits
• Temporomandibular disorders
• Heavy smoking (\>10 cigarettes/day)

Sponsors & Collaborators

• Sherif Aly Sadek: lead

Study Sites (1)

Faculty of Dentistry, Cairo University

Cairo, Egypt

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: DIAGNOSTIC
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Associate Professor

Study Record Dates

• First Submitted: January 24, 2026
• First Posted: February 6, 2026
• Study Start: July 2, 2025
• Primary Completion: October 20, 2025
• Study Completion: November 10, 2025
• Last Updated: February 6, 2026

Record last verified: 2026-01

Data Sharing

• IPD Sharing: Will not share

Locations

EG (1)