Comparative Analysis of Masticatory Performance and Masticatory Efficiency of Bilateral and Unilateral Mastication

The type of attachment that is used in implant-supported mandibular overdentures may influence the retention and stability of the prosthesis and, thus, masticatory function. In this within-subject cross-over clinical trial, we examined the hypothesis that greater retention and stability of the overdenture improve the masticatory function. Eighteen edentulous subjects received 2 oral implants, a new overdenture, and, successively, 3 different suprastructure modalities: magnet, ball, and bar-clip. Masticatory performance, masticatory efficiency, and swallowing threshold were measured. The masticatory function significantly improved after implant treatment with each of the 3 attachments. We observed small differences in masticatory function among the 3 attachment types: slightly better masticatory performance with ball and bar-clip than with magnet attachments. The number of chewing cycles until swallowing hardly decreased after implant treatment. We conclude that significantly better masticatory performance, combined with a slightly smaller number of chewing cycles after implant treatment, results in smaller food particles being swallowed.

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Clinical effectiveness of implant support for distal extension removable partial dentures: functional evaluation using occlusal force measurement and masticatory efficiency

International Journal of Implant Dentistry ◽

10.1186/s40729-021-00381-4 ◽

2021 ◽

Vol 7 (1) ◽

Author(s):

Kei Murakami ◽

Yasunori Ayukawa ◽

Yoichiro Ogino ◽

Akinari Nakagawa ◽

Tadashi Horikawa ◽

...

Keyword(s):

Force Measurement ◽

Clinical Effectiveness ◽

The Other ◽

Functional Evaluation ◽

Masticatory Performance ◽

Occlusal Force ◽

Pressure Sensitive ◽

Masticatory Efficiency ◽

Efficiency Condition ◽

Distal Extension

Abstract Background Implant-supported removable partial dentures (ISRPD) are supported at the free-end region with implant retainers. As implant retainers prevent denture settlement and facilitate denture retention, this is intended to improve masticatory performance in comparison with that of conventional removable dentures. In the present study, we evaluated the effect of implant retainers at the free-end region of removable dentures on occlusal force and masticatory efficiency using a pressure-sensitive sheet, and measured glucose concentration in saliva after mastication with gummy candy. Methods In the present study, the occlusal force and masticatory efficiency of 13 subjects were measured in the following three conditions: without dentures (Condition 1), wearing dentures but not supported by implants (Condition 2), and wearing dentures supported by implants (ISRPD) (Condition 3). All data were statistically compared. Results Regarding the occlusal force, Condition 3 showed significantly higher scores than the other conditions; however, there were no significant differences between Conditions 1 and 2. Regarding the masticatory efficiency, Condition 3 showed significantly higher scores than Condition 2. Conclusions With ISRPD, the occlusal force and masticatory efficiency were increased in comparison with those with conventional removable dentures.

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A colour-based image segmentation method for the measurement of masticatory performance in older adults

ACTA IMEKO ◽

10.21014/acta_imeko.v10i2.645 ◽

2021 ◽

Vol 10 (2) ◽

pp. 191

Author(s):

Lorenzo Scalise ◽

Rachele Napolitano ◽

Lorenzo Verdenelli ◽

Susanna Spinsante ◽

Giorgio Rappelli

Keyword(s):

Older Adults ◽

Clustering Algorithm ◽

Automatic Segmentation ◽

Segmentation Method ◽

Masticatory Performance ◽

Robust Solution ◽

Masticatory Efficiency ◽

Time Period ◽

Oral Conditions

Masticatory efficiency in older adults is an important parameter for the assessment of their oral health and quality of life. This study presents a measurement method based on the automatic segmentation of two-coloured chewing gum based on a K-means clustering algorithm. The solution proposed aims to quantify the mixed areas of colour in order to evaluate masticatory performance in different dental conditions. The samples were provided by ‘two-colour mixing’ tests, currently the most used technique for the evaluation of masticatory efficacy, because of its simplicity, low acquisition times and reduced cost. The image analysis results demonstrated a high discriminative power, providing results in an automatic manner and reducing errors caused by manual segmentation. This approach thus provides a feasible and robust solution for the segmentation of chewed samples. Validation was carried out by means of a reference software, demonstrating a good correlation (R2 = 0.64) and the higher sensitivity of the proposed method (+75 %). Tests on patients with different oral conditions demonstrated that the K-means segmentation method enabled the automatic classification of patients with different masticatory conditions, providing results in a shorter time period (20 chewing cycles instead of 50).

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Masticatory efficiency, quality of life, comfort, retention and satisfaction on digital denture: case report

RGO - Revista Gaúcha de Odontologia ◽

10.1590/1981-863720210005220200036 ◽

2021 ◽

Vol 69 ◽

Author(s):

Adriana da Fonte Porto CARREIRO ◽

Rachel Gomes CARDOSO ◽

Ana Clara Soares Paiva TÔRRES ◽

Andréa Fabiana LIRA ◽

Laércio Almeida de MELO ◽

...

Keyword(s):

Quality Of Life ◽

Randomized Clinical Trials ◽

Masticatory Performance ◽

Treatment Alternative ◽

Patient’S Satisfaction ◽

Masticatory Efficiency ◽

Cad Cam ◽

Digital Denture

ABSTRACT The aim of this study was to describe a clinical protocol for fabrication of maxillary and mandibular dentures using CAD/CAM technology. Further, digital and conventional dentures fabricated for the same patient were compared. The comparison was based on patient’s satisfaction, comfort, retention, number of follow-up sessions, masticatory performance and quality of life. No laboratorial step was needed for CAD/CAM fabrication and less sessions were required up to denture insertion. Compared to the conventional dentures, digital dentures provided better satisfaction, comfort and retention and required less follow-up sessions. Both dentures presented similar results about masticatory performance and quality of life. As a conclusion, digital denture is a viable treatment alternative for edentulous patients. However, controlled and randomized clinical trials are required to reveal the real benefits of this treatment alternative compared to the conventional denture.

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Impact of residual ridge anatomy on masticatory efficiency of conventional complete denture users

RGO - Revista Gaúcha de Odontologia ◽

10.1590/1981-863720210005920200059 ◽

2021 ◽

Vol 69 ◽

Author(s):

Maria de Fátima Trindade Pinto CAMPOS ◽

Laércio Almeida de MELO ◽

Roberto Fagner Felix ARAÚJO ◽

Annie Karoline Bezerra de MEDEIROS ◽

Adriana da Fonte Porto CARREIRO

Keyword(s):

Cross Sectional Study ◽

Wilcoxon Test ◽

Masticatory Performance ◽

Cross Sectional ◽

Arch Width ◽

Masticatory Efficiency ◽

Ridge Height ◽

Significant Difference ◽

Spearman Correlation Test ◽

Ridge Width

ABSTRACT Objective: The aim of this cross-sectional study was to evaluate the anatomical characteristics of edentulous residual ridges in stone casts of complete dentures users and assess correlations with masticatory efficiency. Methods: The sample included 74 study casts, of which 37 were higher and 37 bottom. Measurements were performed using a drypoint compass and a transparent ruler. Arches and ridges of maxillae and mandibles were classified into small, medium, and large. Masticatory efficiency was obtained by the sieve method with the old prostheses and 3 months after placement of new prostheses. The correlations between the anatomical variables of the ridges and arches (height, width and size) and masticatory efficiency were verified by the Spearman correlation test. Significant differences in masticatory efficiencies were assessed by the Wilcoxon test. Results: People with larger maxillary alveolar ridge presented better masticatory performance with old and new dentures. There was no correlation between maxillary ridge width and size with masticatory efficiency, but a correlation was found between maxillary arch width and masticatory efficiency evaluated with the old dentures. Conclusions: With the new dentures, the correlation had a tendency for significance. For the mandible, no correlation was found between height, width, and size of the ridge or with width, length, and size of the arch and masticatory efficiency. In addition, there was no significant difference between masticatory efficiencies evaluated with the old and new prostheses. For the maxilla, ridge height and arch width influence masticatory efficiency. For the mandible, the anatomy had little influence on masticatory performance.

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