Prostheses Durability
Conditions
Brief summary
Quantification and visualization the internal and marginal gaps by newer digital methods, such as the triple-scan protocol described by Borga Dönmez et al. (2024), employing 3D analysis software, offering a more objective and reproducible assessment.
Interventions
Conventional implant impression using impression copings and elastomeric impression material.
DEVICEDigital Impression with Nonmodified Scan Body
Digital implant impression obtained using nonmodified implant scan bodies
DEVICEDigital Impression with Modified Scan Body
Digital implant impression obtained using subtractively modified implant scan bodies
Sponsors
Mansoura University
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
SINGLE (Subject)
Intervention model description
Participants underwent all three impression techniques (conventional impression, digital impression with nonmodified scan bodies, and digital impression with modified scan bodies) in a randomized crossover sequence. Each participant served as his or her own control, and the order of impression techniques was randomized to minimize sequence effects.
Eligibility
Sex/Gender
ALL
Age
45 Years to 64 Years
Healthy volunteers
Yes
Inclusion criteria
Reduced patient satisfaction regarding the stability and retention of conventional mandibular dentures due to mandibular ridge atrophy. Completely edentulous maxillary and mandibular arches for at least 1 year. Sufficient bone volume for placement of four mandibular implants without the need for bone grafting. Age between 45 and 64 years. Ability and willingness to provide informed consent and comply with study procedures.
Exclusion criteria
Current smoking habit. Bone metabolic diseases that may affect osseointegration. History of radiotherapy to the head and neck region within the previous 3 years. Systemic conditions or medications that could compromise implant healing. Inability to attend follow-up visits or comply with study requirements.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Mean horizontal misfit (µm) | Day 1 | Mean horizontal misfit using the triple-scan protocol and STL file superimposition in software. Results will be reported in micrometers (µm). |
| Mean vertical misfit (µm) | Day 1 | Mean vertical misfit using the triple-scan protocol and STL file superimposition in software. Results will be reported in micrometers (µm). |
Countries
Egypt
Outcome results
None listed