Evaluation of microstrain around distally inclined implant-supported fixed partial denture using low profile attachment (An in-vitro comparative study) | ||
| Alexandria Dental Journal | ||
| Article 5, Volume 50, Issue 2, August 2025, Pages 143-151 PDF (559.77 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/adjalexu.2024.291770.1510 | ||
| Authors | ||
| Sally M. Abd EL-Moniem* 1; Ahmed M. Abdelhamid2; Ingy S. Soliman3 | ||
| 1Department of Prosthodontics,Faculty of dentistry,Alexandria university,Alexandria,Egypt. | ||
| 2Department of Prosthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt. | ||
| 3Department of Prosthodontics,Faculty of Dentistry,Alexandria University,Alexandria,Egypt. | ||
| Abstract | ||
| INRTODUCTION: The microstrain (µε) around inclined implants will influence the selection of the type of attachment system. Studies that evaluated the microstrain around zirconium monolithic implant-supported posterior restorations with angled abutments and Low profile abutments with elastic Seeger System are lacking. OBJECTIVES: The study aimed to assess the microstrain developed around angulated implants under vertical and oblique loading using two connection systems (OT BRIDGE and multiunit abutments (MUA) attachment systems) retained implant-supported zirconium monolithic three-unit fixed partial dentures (FPDs) using strain gauges. MATERIALS AND METHODS: Two dummy implants were inserted in one epoxy resin class II Kennedy’s classification mandibular model. The anterior implant was positioned in a vertical 0º at the right second premolar, while the posterior implant was positioned at 30º distal angulation at the right second molar. Eight zirconium monolithic three-unit FPDs were digitally designed to be assigned to 2 main groups (n=4) according to the type of attachment system (OT BRIDGE attachment group, MUA attachment group). Each group received two loads (vertical 0º and oblique 30º) in a buccolingual direction from 0 to 100 N using a universal testing machine at the center of the FPDs. RESULTS: The microstrain around the distally angulated implant with OT BRIDGES was significantly lower than MUA vertically but vice versa in 30º obliquely. CONCLUSION: The microstrain was significantly affected by the type of attachment system. OT BRIDGE attachment can be utilised in place of MUA attachment over angulated implants in FPDs, as a favourable stress distribution was found by vertical loading. | ||
| Keywords | ||
| Fixed partial denture; OT-BRIDGE attachment; MUA attachment; Strain; Strain gauges | ||
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