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Not yet recruiting NCT07550725

Truness of Full Arch Impressions in All on x Cases

No phase Interventional Truness of Impression Techniques in All on x Cases Trueness of Full Arch Implant Prosthesis Impression

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: photogrammetry based full arch impression, Digital Impression Using Splinted Scan Bodies, Conventional Open-Tray Implant Impression.
Who it may be relevant to
Registry conditions: Truness of Impression Techniques in All on x Cases, Trueness of Full Arch Implant Prosthesis Impression. Basic parameters: 55 years — 65 years · Male.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Egypt
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

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Official title

Trueness of Full-Arch Impressions Using Photogrammetry, Splinted Digital Scan Bodies Versus Conventional Open-Tray Techniques in the All-on-x Prosthesis

Overview

This study aims to compare the trueness and precision of three impression methodologies photogrammetry, digital intraoral scanning with splinted scan bodies, and conventional open tray impressions in the context of the All-on-X treatment concept. This will provide valuable evidence for clinicians considering digital workflows for implant-supported prostheses. Does the use of photogrammetry and digital impression techniques with splinted scan bodies result in improved accuracy in implant position transfer in the All-on-X concept compared to conventional open tray impressions?

Interventions

  • Device photogrammetry based full arch impression
    use of photogrammetry system to capture the positions of All on X implants digitally without physical impression material. This technique aims to achieve precise measurements and increase patient satisfaction
  • Device Digital Impression Using Splinted Scan Bodies
    Digital full-arch impression using splinted scan bodies connected with resin to enhance stability. An intraoral scanner captures the splinted assembly for framework fabrication. Accuracy and patient satisfaction will be evaluated.
  • Procedure Conventional Open-Tray Implant Impression
    Traditional full-arch open-tray impression using polyether or VPS material with splinted impression copings. This serves as the standard comparator for evaluating accuracy and patient satisfaction.

Primary outcome measures

  • Accuracy measured using 3D inspection software (Geomagic Control X). [Time frame: Immediately after measurements taking]
Secondary outcome measures (1)
  • Oral health-related quality of life (OHRQoL), assessed using standardized questionnaires. [Time frame: immediately after measurements taking]

Eligibility criteria

Inclusion criteria

  • Adults aged 45-65 years.
  • Fully edentulous or partially edentulous maxilla requiring full-arch rehabilitation.
  • Sufficient maxillary bone volume to support at least four implants according to the All-on-X protocol.
  • Systemically healthy patients with no contraindications to dental implant surgery (ASA I-II classification).
  • Demonstrated ability to maintain adequate oral hygiene
  • Willingness to participate in the study and comply with follow-up visits and required maintenance protocols.
  • Patients seeking a fixed, implant-supported prosthesis for the maxilla due to missing teeth and inability to use removable prostheses effectively.
  • Acceptable radiographic findings with no signs of pathology, infection, or significant anatomical limitations.

Exclusion criteria

  • Uncontrolled systemic diseases (e.g., uncontrolled diabetes, osteoporosis, immunosuppressive disorders)
  • History of radiation therapy to the head and neck region
  • Active periodontal disease or untreated caries
  • Maxillary cysts, tumors, or pathologies
  • Poor oral hygiene or inability to maintain postoperative care
  • Insufficient bone volume for All-on-X without extensive grafting
  • Maxillary sinus pathology or oroantral fistula
  • Psychiatric illness or cognitive impairment affecting compliance
  • Bruxism or parafunctional habits
  • Pregnant or lactating women
  • History of implant failure or titanium allergy
  • Use of bisphosphonates or antiresorptive medications
  • Heavy smoking (>10 cigarettes/day)
  • Inability or unwillingness to attend follow-up visits
  • Diagnosed or symptomatic temporomandibular joint disorders (pain, clicking, locking, limited opening)

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation
Randomized
Model
Crossover
Masking
Open label
Primary purpose
Diagnostic

Study locations

Egypt · 1 center
  • October 6 University — Giza

Publications

  • Drancourt N, Auduc C, Mouget A, Mouminoux J, Auroy P, Veyrune JL, El Osta N, Nicolas E. Accuracy of Conventional and Digital Impressions for Full-Arch Implant-Supported Prostheses: An In Vitro Study. J Pers Med. 2023 May 15;13(5):832. doi: 10.3390/jpm13050832. PMID 37241002

Identifiers

NCT: NCT07550725 · RECO6u/2025

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗