ABSTRACT
Objective To evaluate the clinical effects of magnetic attachment on Kennedy Ⅰdentition defect.Methods Totally thirty cases of Kennedy Ⅰ dentition defect were enrolled.Magfit EX 600 magnetic attachments were applied as the extra-coronal retainer on abutment,meanwhile the guide plane and key-key way were applied as the stablizinge apparatus for dentures.The removable partial dentures with magnetic attachment were fabricated in casting framework way.After the clinical examination,X-ray and patients' subjective feeling interview,the satisfaction status to the dentures was evaluated.Results Totally thirty patients were followed up for a period ranging from 1 to 3 years.25 patients were satisfied with the dentures in both function and esthetic results.Additionally,one patient was found to have gingivitis,and 2 patients were found the attachments loosened.These 3patients were considered basically satisfied subjects.The overall satisfaction rate was 93.3％.The rest 2 patients were found alveolar bone absorption,which led to base plate of molar teeth region sinking,and partial plastic base plate of denture cracked or damaged.Therefore the 2 patients were considered as unsatisfied subjects.Conclusions The removable partial dentures with magnetic attachment not only exhibit characteristics as compact,aesthetic and comfort,but also supply reliable retention,stablization,excellent masticatory efficiency and enough protection for abutments in patients bearing Kennedy Ⅰ dentition defect.
