Publications by authors named "Fatma Mahanna"

3 Publications

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Corrigendum to "Biomechanical aspects of reinforced implant overdentures: A systematic review" [J. Mech. Behav. Biomed. Mater. 91 (2019) 202-211].

J Mech Behav Biomed Mater 2021 Feb 16;114:104199. Epub 2020 Nov 16.

Department of Biomaterials Science and Turku Clinical Biomaterials Centre-TCBC, Institute of Dentistry, University of Turku, Turku, Finland; Welfare Division, City of Turku, Turku, Finland.

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http://dx.doi.org/10.1016/j.jmbbm.2020.104199DOI Listing
February 2021

Satisfaction and Oral Health-Related Quality of Life of Different Attachments Used for Implant-Retained Overdentures in Subjects with Resorbed Mandibles: A Crossover Trial.

Int J Oral Maxillofac Implants 2020 Mar/Apr;35(2):423-431

Purpose: The aim of this crossover study was to evaluate patient satisfaction and oral health related-quality of life (OHRQoL) with different connectors used for implant-retained overdentures in subjects with resorbed mandibles.

Materials And Methods: Eighteen edentulous patients with atrophied mandibular bone received traditional maxillary and mandibular dentures (control). After 3 months, two implants were inserted in the canine regions. Three months later, each patient received the following overdentures using a crossover design: (1) bar overdentures, (2) telescopic overdentures, and (3) stud overdentures. Patient satisfaction (primary outcome) was measured by visual analog scale (VAS). OHRQoL (secondary outcome) was measured by oral health impact profile (OHIP-14). Questions of VAS and OHIP-14 were evaluated after 3 months of using conventional dentures, bar overdentures, telescopic overdentures, and stud overdentures.

Results: For all questionnaires, conventional dentures recorded significantly lower satisfaction than implant overdentures. Stud overdentures showed significantly higher satisfaction with maxillary denture comfort, self-consciousness, and feeling that the prosthesis is a part of the patient compared with other attachments. Bar and telescopic overdentures showed higher satisfaction during biting of hard and soft foods, while telescopic and stud overdentures showed higher satisfaction with oral hygiene. No significant differences between attachments regarding other VAS and OHIP-14 questions were noted.

Conclusion: Implant overdentures for subjects with mandibular bone resorption improved patient satisfaction and OHRQoL compared with traditional dentures regardless of the form of attachments. However, studs are more advantageous in terms of comfort with maxillary overdentures, self-consciousness, and feeling that the prosthesis is a part of the patient. Bar and telescopic attachments had more satisfaction during biting of soft and hard foods, while telescopic and stud attachments had more satisfaction with oral hygiene.
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http://dx.doi.org/10.11607/jomi.7869DOI Listing
August 2020

Biomechanical aspects of reinforced implant overdentures: A systematic review.

J Mech Behav Biomed Mater 2019 03 11;91:202-211. Epub 2018 Dec 11.

Department of Biomaterials Science and Turku Clinical Biomaterials Centre-TCBC, Institute of Dentistry, University of Turku, Turku, Finland; Welfare Division, City of Turku, Turku, Finland.

Purpose: The purpose of this systematic review was to investigate the effect of reinforcement on the mechanical behaviour of implant overdenture (IOD) bases and its cumulative biological effect on the underlying supporting structures (implants and the residual ridge).

Material And Methods: The required documents were collected electronically from PubMed and Web of Science databases targeting papers published in English that focused on denture base reinforcement for IOD prostheses in order to recognize the principal outcomes of reinforcement on the mechanical and biological properties of overdentures. Such biological outcomes as: strains on implants, peri-implant bone loss, residual ridge resorption, and strain on the residual alveolar ridge.

Results: A total of 269 citations were identified. After excluding any repeated articles between databases and the application of exclusion and inclusion criteria, only 13 publications fulfilled the inclusion criteria. Three publications investigated the mechanical properties of fibre and/or metal-reinforced implant overdentures while another 3 articles investigated the effect of metal reinforcement on stress distribution and strains transmitted to the underlying implants. In addition, 3 in vitro studies investigated the effect of metal reinforcement on overdenture base strain and stresses. Stress distribution to the residual ridge and strain characteristics of the underlying tissues were investigated by 2 in vitro studies. Five clinical studies performed to assist the clinical and prosthetic maintenance of metal-reinforced IOD were included. Data concerning denture base fracture, relining, peri-implant bone loss, probing depth, and implant survival rates during the functional period were extracted and considered in order to evaluate the mechanical properties of the denture base, residual ridge resorption and implant preservation rates, respectively.

Conclusion: The use of a denture base reinforcement can reduce the fracture incidence in IOD bases by enhancing their flexural properties and reducing the overdenture base deformation. Strains on the underlying supporting structures of overdenture prostheses including dental implants and the residual ridge can be decreased and evenly distributed using a metal reinforcement.
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http://dx.doi.org/10.1016/j.jmbbm.2018.12.006DOI Listing
March 2019
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