Abd EL-Moniem, S., Abdelhamid, A., Soliman, I. (2025). Evaluation of microstrain around distally inclined implant-supported fixed partial denture using low profile attachment (An in-vitro comparative study). Alexandria Dental Journal, 50(2), 143-151. doi: 10.21608/adjalexu.2024.291770.1510
Sally M. Abd EL-Moniem; Ahmed M. Abdelhamid; Ingy S. Soliman. "Evaluation of microstrain around distally inclined implant-supported fixed partial denture using low profile attachment (An in-vitro comparative study)". Alexandria Dental Journal, 50, 2, 2025, 143-151. doi: 10.21608/adjalexu.2024.291770.1510
Abd EL-Moniem, S., Abdelhamid, A., Soliman, I. (2025). 'Evaluation of microstrain around distally inclined implant-supported fixed partial denture using low profile attachment (An in-vitro comparative study)', Alexandria Dental Journal, 50(2), pp. 143-151. doi: 10.21608/adjalexu.2024.291770.1510
Abd EL-Moniem, S., Abdelhamid, A., Soliman, I. Evaluation of microstrain around distally inclined implant-supported fixed partial denture using low profile attachment (An in-vitro comparative study). Alexandria Dental Journal, 2025; 50(2): 143-151. doi: 10.21608/adjalexu.2024.291770.1510
Evaluation of microstrain around distally inclined implant-supported fixed partial denture using low profile attachment (An in-vitro comparative study)
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.
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