Abstract
Consequence of midline mandibular flexure on bilaterally splinted and non-splinted implant-supported mandibular full arch prosthesis with immediately loaded implants: A one year clinical study
Highlights
Patients were completely satisfied with their implant-supported immediatelyloaded prostheses, whatever splinting protocol utilized
Mandibular flexure is defined as “the change in shape of the mandible caused by the pterygoid muscles contracting during opening and protrusion movements” [1]
Medial mandibular flexure (MMF) is a mandibular deformation characterized by a decrease in the arch width during jaw opening and protrusion movements because of the functional contraction of the lateral pterygoid muscles, causing high strain in the symphysial region [39]
Summary
Mandibular flexure is defined as “the change in shape of the mandible caused by the pterygoid muscles contracting during opening and protrusion movements” [1]. Where, it may affect the biomechanical behavior, passive fit, and prognosis of the fixed implant-supported prosthesis if it is not put into consideration [2]. The stress generated by mandibular flexure can be compensated by adaptation of the periodontal ligament. While, these stresses in a fixed implant-supported prosthesis are transmitted around the mandibular bone and could induce stresses in the implantrelated prosthesis and abutments and affecting the bone-implant interface [3, 4], especially in posterior implants [5]. Mandibular flexure should be considered an important biomechanical factor in the design of a partial or complete fixed implant-supported prosthesis in the mandible with dental implants [6,7,8]
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