Conventional Impressions Versus Digital Impression Techniques for Implant Supported Screw Retained Prosthesis

Tanta University

Status: Completed

Conditions: Partial Edentulism Class 1

Treatments: Procedure: Implant placement

Study type: Interventional

Funder types: Other

Identifiers

NCT05912725

RP-9-20-1

Details and patient eligibility

About

The purpose was to evaluate the accuracy of traditional and digital implant level impression procedures by using three-dimensional superimposition analysis , and evaluate the passive fit of screw- retained implant supported restorations fabricated using conventional and digital impression techniques in bilateral distal extension cases (class I kennedy classification)

Full description

Eight patients who had missing all mandibular posterior teeth except first premolars were included in this study. In each patient, 4 implants were placed, 2 in each side to support 3 units screw retained zirconia restorations. Three months after implant placement, each patient underwent two implant level impression techniques (n=8) for each technique: Conventional implant impressions CII (pick-up, splinted transfers), and digital implant impressions DII were captured with TRIOS 3 Shape intraoral optical scanner. In this study, digital impression was considered as a reference data.

Enrollment: 8 patients

Sex: All

Ages: 30 to 55 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• All participants have sufficient bone length and width for implant insertion.
• General health of the patients was evaluated by taking a full medical history to ensure that these patients were free from any systemic conditions that would have impaired implant osseointegration
• Good oral hygiene
• Sufficient inter-arch spaces
• The opposing arch was almost dentulous, and any missing teeth were restored using a fixed partial denture.

Exclusion criteria

• parafunctional habits
• Heavy smoking
• Those patients with systemic diseases that may influence soft or hard tissue healing.
• Patients with a history of radiation therapy in the head and neck region.
• Patients with a history of radiation therapy in the head and neck region.

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

---

8 participants in 1 patient group

Accuracy of Implant impression techniques

Experimental group

Description:

Active comparative : digital implant impression Participants underwent intra-oral scanning digital impression Experimental : conventional implant impression Participants underwent conventional impressions And right side of pt mouth received screw retained prosthesis constructed from conventional impression left side received screws retained prosthesis constructed from digital impression

Treatment:

Procedure: Implant placement