Chewing efficiency and maximum bite force with different attachment systems of implant overdentures: a crossover study.
OBJECTIVE
This crossover study aimed to evaluate and compare chewing efficiency and maximum bite force (MBF) with resilient telescopic and bar attachment systems of implant overdentures in patients with atrophied mandibles.


METHODS
Ten participants with severely resorbed mandibles and persistent denture problems received new maxillary and mandibular conventional dentures (control, CD). After 3 months of adaptation, two implants were inserted in canine region of the mandible. In a quasi-random method, overdentures were connected to the implants with either bar overdentures (BOD) or resilient telescopic overdentures (TOD) attachment systems. Chewing efficiency in terms of unmixed fraction (UF) was measured using chewing gum (after 5, 10, 20, 30 and 50 strokes), and MBF was measured using a bite force transducer. Measurements were performed 3 months after using each of the following prostheses: CD, BOD and TOD.


RESULTS
Chewing efficiency and MBF increased significantly with BOD and TOD compared to CD. As the number of chewing cycles increased, the UF decreased. TOD recorded significant higher chewing efficiency and MBF than BOD.


CONCLUSIONS
Resilient telescopic attachments are associated with increased chewing efficiency and MBF compared bar attachments when used to retain overdentures to the implants in patients with atrophied mandibles.
Department of Removable Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.
Moustafa Abdou
MA
Elsyad
Department of Removable Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.
Ahmed Samir
AS
Khairallah
D001732:Bite Force; D018592:Cross-Over Studies; D017267:Dental Prosthesis Design; D003826:Denture, Complete, Lower; D003828:Denture, Overlay; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000473:pathology; D008409:Mastication
atrophied mandibles; bar; bite force; chewing efficiency; implant overdenture; telescopic