Evaluation of prefabricated lingual rest seats for removable partial dentures

An investigation into the feasibility of using prefabricated lingual rest seats bonded to mandibular canines and incisors with an orthodontic enamel bonding system was undertaken. 1. A prefabricated lingual rest seat was designed and constructed to closely approximate the lingual contours of anterior teeth. 2. An in vitro study compared the mean failure loads of three orthodontic bonding systems. Two of the three have mean failure loads that are greater than twice the maximum occlusal-gingival forces that were applied to the abutments by removable partial dentures in the study by Maxfield et al. 3. A demonstration of the clinical feasibility of using these prefabricated lingual rests for support of removable partial dentures has been reported.