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?
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).
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
Crossover
photogrammetry based full arch impression
Deviceuse 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
Digital Impression Using Splinted Scan Bodies
DeviceDigital 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.
Conventional Open-Tray Implant Impression
Procedure/SurgeryTraditional 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.
Accuracy measured using 3D inspection software (Geomagic Control X).
Oral health-related quality of life (OHRQoL), assessed using standardized questionnaires.
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