Edentulism complications in patients eligible for hybrid prosthetic treatment. A cross-sectional study

Aims of study.Patients with extended partial edentulism or complete edentulism, eligible for hybrid pro sthetic solutions, are frequently affected by edentulism complications.The aim of our study was to find out the distribution of the edentulism complications that can impair biomechan ical stability of the prosthetic treatment in patients eligible for hybrid prostheses.Materials and methods: A descriptive cross sectional, retrospective study, was conducted in Clinical Learning Base of Faculty of Dental Medicine, "Grigore T. Popa" University of Medicine and Pharmacy Iasi.150 subjects with partial extended or complete edentulism (mean age 61,5 4 +/-8,99 yrs.), eligible for hybrid prosthetic therapy were evaluated.Patients were divided in two groups: Group A (n=96): patients with partial reduced or extended edentulism that were eligible to hybrid prosthetic therapy, retained by fixed teeth-supported prosthetic restoration; Group B (H-PFR/IP) (n=54): patients with total or subtotal edentulism that were eligible to implant-supported hybrid prosthetic therapy, retained by fixed implant-supported prosthetic restorations.Data were collected regarding the patients' variables and edentulism complications.The need for therapeutic interventions in the pro-prosthetic and pro-implant stage was evaluated.Results: Significantly higher percentage of edentulous arches in Group B (90.9%) experienced severe bone resorption compared to Group A (45.6%).Temporo-mandibular joint pathology was notably more prevalent in Group B (94.4%) than in Group A (51.0%) (p <0.001**).Group B had a higher prevalence of muscular disorders (77.8%) compared to Group A (32.3%) (p <0.001**).Mandibular-cranial misalignments were significantly more common in Group B (88.9%) than in Group A (52.1%) (p <0.001**).Temporomandibular disorders were significantly more prevalent higher in patients from Group B (94.4%) when compared to Group A (54.2%) (p <0.001**).Conclusions: Patients eligible for hybrid prostheses consisting of removable dentures retained by fixed implant -supported bridges have significantly higher percentages of complications and need for pro -implant therapeutic interventions than patients eligible for removable dentures retained by fixed implant -supported bridges.