Effect of splinting using welding technique in strain developed on the supporting structures in [all-on-four] | ||
| Egyptian Dental Journal | ||
| Article 14, Volume 69, Issue 2 - Serial Number 4, April 2023, Pages 1315-1323 PDF (1.06 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/edj.2023.185902.2400 | ||
| Authors | ||
| engi abdel fattah* 1; noha nawar2; lamia zaki3 | ||
| 1Candidate for master degree,Oral and Maxillofacial Prosthodontics Department, Faculty of Dentistry, Ain Shams University | ||
| 2Professor of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, Ain Shams University | ||
| 3Lecturer of Oral and Maxillofacial Prosthodontics, Faculty of Dentistry, Ain Shams University | ||
| Abstract | ||
| Introduction: All-on-Four used with anatomical limitations in the atrophied edentulous mandible . All on four requires rigid splinting by metal bar like welding for better distribution of load around implants. The aim of this study: to evaluate the effect of splinting implants in All-on-four design using welding technique on strain induced from vertical loads on both axial & tilted implants Materials and methods: lower completely edentulous 3d printed model with all on 4 implants was fabricated .Two printed lower complete dentures were used one in group (A) where provisional all on 4 prosthesis was fabricated by conventional pick up technique engaging four titanium sleeves screwed to the four multi-unit abutments .The second printed lower complete denture was used in group (B) to fabricated splinted welded titanium bar provisional all on 4 prosthesis using same pick up technique as in group (A ).load was applied to the two provisional prosthesis and strains were recorded. Data were collected & statistically analysed to compare both groups by independent t-test, the p-value was considered significant at the level of <0.05. Results: The two studied groups showed statistically significant where strain induced around all on 4 implants were reduced in group (B) in compared to group(A) Conclusion: with in the limitation of this study splinting all on four implants in provisional prosthesis reduced stresses and strains around implants in compared to conventional non splinting provisional prosthesis. | ||
| Keywords | ||
| splinting; all on four; welding mandible | ||
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