Publications by authors named "Mohamed Moustafa Said"

6 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

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

Factors Associated with Sleep Quality in Maxillectomy Patients.

Int J Prosthodont 2018 May/Jun;31(3):223-225

Purpose: To investigate factors affecting sleep quality in maxillectomy patients after prosthetic rehabilitation and to determine the association between defect status and sleep quality.

Materials And Methods: A total of 57 patients participated in this study. Sleep quality, general health, and oral health-related quality of life (OHRQoL) were evaluated.

Results: Of the total sample, 89% had poor sleep quality. Early morning awakening and daytime sleepiness were the most common complaints.

Conclusion: Defect status and the extent of neck dissection could affect sleep quality in these patients. Improvement of OHRQoL in patients with dentomaxillary prostheses may help improve sleep.
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http://dx.doi.org/10.11607/ijp.5615DOI Listing
August 2018

Prosthodontic Treatment of a Patient with Gnathodiaphyseal Dysplasia: 30-Year Follow-up.

Int J Prosthodont 2018 Mar/Apr;31(2):138-141

This case history report describes the long-term prosthodontic treatment of a patient with gnathodiaphyseal dysplasia (GDD). The patient was initially diagnosed with osteomyelitis in the maxilla in 1986, followed by osteonecrosis spread throughout the mandible. GDD was genetically diagnosed in 2006. Despite the severe alveolar bone resorption, prosthodontic treatment improved the patient's satisfaction and ability to perform essential functions. Regular prosthesis adjustments and periodic follow-up should continue to avoid future complications.
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http://dx.doi.org/10.11607/ijp.5585DOI Listing
May 2018

Association Between Masticatory Function and Oral Health-Related Quality of Life in Partial Maxillectomy Patients.

Int J Prosthodont 2016 Nov/Dec;29(6):561-564

Purpose: The aim of this study was to investigate associations between objectively and subjectively measured masticatory function and oral health-related quality of life (OHRQoL) in partial maxillectomy patients wearing dentomaxillary prostheses.

Materials And Methods: A sample of 32 consecutively treated patients who had undergone a partial maxillectomy were enrolled. Masticatory function was assessed using two objective measures and one subjective measure. The objective measures were masticatory performance (MP), which was estimated by measuring the glucose extracted from gummy jelly, and food mixing ability (a*), which was assessed using color-changeable chewing gum. The subjective measure was perceived chewing ability, rated as masticatory score (MS) based on the patient's responses to a food intake questionnaire. OHRQoL was assessed using the Geriatric Oral Health Assessment Index (GOHAI). Relationships between the masticatory function measures and OHRQoL were analyzed using Spearman rank correlation coefficient.

Results: The correlation coefficients (r) obtained were 0.57 (P = .001) for MS and GOHAI, 0.247 (P = .173) for MP and GOHAI, -0.173 (P = .343) for a* and GOHAI, 0.517 (P = .002) for MP and a*, 0.199 (P = .257) for MP and MS, and 0.019 (P = .919) for a* and MS.

Conclusion: Subjective MS showed a significant positive correlation with GOHAI score, suggesting that perceived chewing ability could be an important factor in the estimation of OHRQoL in partial maxillectomy patients.
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http://dx.doi.org/10.11607/ijp.4852DOI Listing
March 2019

Systematic review of literature: functional outcomes of implant-prosthetic treatment in patients with surgical resection for oral cavity tumors.

J Investig Clin Dent 2017 May 8;8(2). Epub 2016 Jan 8.

Department of Maxillofacial Prosthetics, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.

The current systematic review was performed to assess the functional outcomes of implant-prosthetic treatment on patients who have had surgical resection of oral cavity tumors. The assessment of function, satisfaction, or quality of life (QoL) were the major outcomes that evaluated preoperative and/or before and after implant-prosthetic treatment. Only eight published studies fulfilled the inclusion criteria. Three publications evaluated chewing ability, masticatory performance, and neuromuscular function, and the other five publications used questionnaire as a method of assessment. These publications mainly reported on implant-prosthetic treatment in mandibulectomy patients. It was found that implant-retained prosthesis had a beneficial effect on masticatory performance and masseter muscle activity on the defect side, but not on the non-defect side. Swallowing threshold performance and jaw movement parameters showed no significant differences between non-implant-retained prosthesis and implant-retained prosthesis. Significant improvement in prosthesis and patients' satisfaction with implant-retained prosthesis compared to non-implant-retained prosthesis was observed. However, general improvement in patients' QoL was not observed after implant-prosthetic treatment. Patients with intraoral resection might benefit from implant-retained prosthesis with regard to masticatory function and satisfaction. However, future clinical trials with an adequate sample size are needed to identify the group of patients who are likely to benefit from the implant-prosthetic treatment modality.
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http://dx.doi.org/10.1111/jicd.12207DOI Listing
May 2017
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