Effect of different fabrication workflows on the passive fit of screw-retained bar splinting two interforaminal implants: a parallel blinded randomised clinical trial

• Published in: BMC oral health 2024-04, Vol.24 (1), p.410-9, Article 410
• Main Authors: Eldin, Bassant Sherif Gamal, Talaat, Ingy Amin, Nawar, Noha Helmy Hassan, Mohamed, Ahmed Mostafa Abdelfattah
• Format: Article
• Language: English
• Subjects: Accuracy; Bone Screws; Clinical trials; Computer-Aided Design; Dental Implants; Dental Impression Technique; Dental marginal adaptation; Dental Prosthesis Design; Dental Prosthesis, Implant-Supported - methods; Dental prosthetics; Digital technology; Edentulous; Humans; Mouth, Edentulous; Patients; Prostheses; Statistical analysis; Systematic review; Titanium; Transplants & implants; Workflow
• ISSN: 1472-6831; 1472-6831
• DOI: 10.1186/s12903-024-04157-1

To clinically compare the effect of the conventional and the digital workflows on the passive fit of a screw retained bar splinting two inter-foraminal implants. The current study was designed to be a parallel triple blinded randomised clinical trial. Thirty six completely edentulous patients were selected and simply randomized into two groups; conventional group (CG) and digital group (DG). The participants, investigator and outcome assessor were blinded. In the group (CG), the bar was constructed following a conventional workflow in which an open top splinted impression and a lost wax casting technology were used. However, in group (DG), a digital workflow including a digital impression and a digital bar milling technology was adopted. Passive fit of each bar was then evaluated clinically by applying the screw resistance test using the "flag" technique in the passive and non passive situations. The screw resistance test parameter was also calculated. Unpaired t-test was used for intergroup comparison. P-value