The strength of multiple major connector designs under simulated functional loading

Removable Partial Denture Designing: Variation of Hard and Soft Tissue Anatomy and Maxillary Major Connector Selection

“…This circle configuration (''L-beam'' effect) could be improved the connector rigidity because the straps are in 2 different planes [2] therefore it favorite used for most maxillary partially edentulous situation [4]. This was confirmed by studies, in which the A-PP strap had the highest rigidity and also showed the least deformation of the MMCs tested [6-8, 22, 28, 29].…”

“…Pienkos et al, stated that the PS with adequate rigidity should have a width of at least 8 mm with an increase in size for distal extensions and can be used for most designs [2]. The PS with smaller widths demonstrated greater displacements and affected the RPD effectiveness [11].…”

“…Eto et al, and Inoue et al, have been analyzed the relation between PS width and the displacements and found that PS widths of more than 18 mm revealed comparable rigidity, broad bar while, increased width called a modified palatal plate [5,15,20]. PS with more tissue coverage in this section contributed to support and distributes masticatory stress over a wide area all advantage make it the preferred choice for the maxilla [2,11].…”

“…Pallegama et al, found that, the thin and wide design was significantly preferred to the thick and narrow design [43]. MMC with minimal dimensions and thickness for a clinically relevant major connector required, while still maintaining the balance between functional strength, comfort to the patient, and the health of the gingival tissue [2]. However, the individual predilections of patients may not be an appropriate basis for an attempt to find a 'best design' applicable to all patients [43].…”

“…Maxillary major connector (MMC) is RPD component that fulfill various functions and important for RPD effectiveness. Patient's acceptance, oral anatomy, and fundamental RDP design were considered important factors for MMC design and dimensions [2]. The intimate contact between the MMC and the palatal mucosa and wide mucosal coverage improves retention and stability of RPD [1].…”