Masticatory Efficiency, Bite Force, and Patient-Reported Outcomes in Patients Rehabilitated With Complete and Partial Dentures Supported by Teeth, Mini-Implants, or Conventional Implants

Bite Force, Complete Dentures, Edentulism, Edentulism Complete, Implant- Asissted Removable Partial Denture, Implant Supported Overdenture, Mastication, Masticatory Function, Mini Dental Implants, OHIP, Oral Health Quality of Life (OHQoL) Was Assessed, Partial Edentulism, Patients Reported Outcomes, Prosthodontics, Removable Partial Denture

mini dental implants, Masticatory Efficiency, Bite Force, OHIP, Chewing Function Questionnaire, Patient-Reported Outcomes, Oral Health-Related Quality of Life, Complete Denture, Removable Partial Denture, Implant-Retained Overdenture, Implant-Assisted Removable Partial Denture, Implant overdenture, Edentulous Patients, Partially Edentulous Patients, Prosthodontic Rehabilitation, Chewing Ability, Orofacial Esthetics

This study aims to evaluate masticatory efficiency, bite force, and patient-reported outcomes in edentulous and partially edentulous patients rehabilitated with different removable prosthodontic treatment modalities. The study includes both cross-sectional and longitudinal components. The cross-sectional component will compare patients wearing conventional complete dentures, conventional removable partial dentures, mini-implant-retained overdentures, conventional implant-retained overdentures, and implant-assisted removable partial dentures. The longitudinal component will assess changes in masticatory performance, bite force, and patient-reported outcomes following prosthodontic rehabilitation and adaptation over time. The study seeks to determine whether implant-assisted treatment options provide superior functional outcomes, oral health-related quality of life, and patient satisfaction compared with conventional removable prostheses.

Tooth loss and edentulism are associated with impaired masticatory function, reduced bite force, compromised oral function, and decreased oral health-related quality of life. Conventional complete dentures and removable partial dentures remain widely used treatment modalities; however, limitations in retention, stability, and chewing efficiency may negatively affect patient satisfaction and functional outcomes. Implant-assisted treatment concepts, including mini-implant-retained overdentures, conventional implant-retained overdentures, and implant-assisted removable partial dentures, have been introduced to improve prosthesis retention, stability, comfort, and oral function. The IMPROSTREHAB study (Implant and Prosthodontic Rehabilitation Outcomes Study) is an observational clinical study designed to evaluate functional and patient-reported outcomes associated with different removable prosthodontic treatment modalities in edentulous and partially edentulous patients. The study comprises both cross-sectional and longitudinal components. In the cross-sectional component, masticatory efficiency, bite force, oral health-related quality of life, and patient-reported outcomes will be compared among individuals rehabilitated with conventional complete dentures (CDs), conventional removable partial dentures (RPDs), mini-implant-retained overdentures (MDI-ODs), conventional implant-retained overdentures (CI-ODs), and implant-assisted removable partial dentures (IARPDs). Additional analyses will evaluate the influence of demographic, clinical, anatomical, and prosthodontic factors, including age, sex, duration of prosthesis use, residual ridge resorption, number and distribution of remaining teeth, implant-related variables, and other factors that may influence treatment outcomes. In the longitudinal component, participants receiving new prosthodontic treatment will be followed prospectively to assess changes in masticatory function, bite force, oral health-related quality of life, and patient-reported outcomes following treatment and adaptation to the prosthesis. Repeated assessments will be performed at predefined follow-up intervals according to the specific objectives of individual study subprojects. Masticatory performance and masticatory efficiency will be evaluated using validated and standardized assessment methods, including chewing-gum mixing ability tests and other objective functional measures where appropriate. Maximum bite force will be assessed using calibrated bite-force measurement devices. Patient-reported outcomes will be evaluated using validated questionnaires and instruments, including measures of oral health-related quality of life, self-perceived chewing ability, denture satisfaction, treatment satisfaction, esthetic outcomes, and other patient-centered outcomes. The primary objective of the study is to evaluate and compare masticatory efficiency and functional performance among different conventional and implant-assisted removable prosthodontic treatment modalities. Secondary objectives include the assessment of maximum bite force, oral health-related quality of life, chewing ability, patient satisfaction, esthetic outcomes, and other patient-reported outcomes, as well as the identification of factors associated with favorable functional and patient-centered treatment outcomes. Participants will be recruited from the University of Zagreb School of Dental Medicine and affiliated clinical settings. Treatment allocation is not determined by the investigators but reflects routine clinical care and previously completed prosthodontic rehabilitation. The results of this study are expected to improve understanding of the functional and patient-centered benefits of contemporary removable prosthodontic treatment options and to support evidence-based clinical decision-making for edentulous and partially edentulous patients.

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