Load transmission evaluation by removable distal-extension partial dentures using holographic interferometry

Pezzoli, M; Appendino, Paolo; Calcagno, L.; Celasco, M.; Modica, R

doi:10.1016/0300-5712(93)90115-7

Cited by 15 publications

(11 citation statements)

References 9 publications

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“…One possibility to analyze these changes in shape with greater precision is with the use of an interferometric process. This type of procedure has been used previously in dental research to study tooth movement [21,22], measure prosthesis deformation [23][24][25], and in a few studies to investigate tooth deformation [26] predominantly in 1D. The objective of this study was to use a holographic process (3D-Speckle-Interferometry) to assess the impact of different restorative materials on the deformation of teeth under applied force 3D.…”

Section: Introductionmentioning

confidence: 99%

Determination of the dynamics of restored teeth by 3D electronic speckle pattern interferometry

et al. 2004

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Section: Introductionmentioning

confidence: 99%

Determination of the dynamics of restored teeth by 3D electronic speckle pattern interferometry

et al. 2004

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“…(21,22,23) The applied load was a static not a dynamic one, because it had been almost impossible to reproduce the chewing pattern in cases of in-vitro experiments. (24) After each loading cycle a five minutes pause was allowed to the successive ones as recommended (25) . this allow for rebound of the deformation that occurred in the acrylic resin and the polyvinyl siloxane material simulating the mucosa following load application that could affect the results.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Stresses and Retention in Two Different Types of Bar Attachment Used in Implant Retained Maxillary Obturator

Badr

Hassan

2017

Egyptian Dental Journal

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Purpose: The aim of this study was to compare the stresses and retention force of two different attachment systems in implant retained maxillary obturator. Material & Methods: an acrylic model was constructed to simulate edentulous case with maxillary defect and three implants were inserted in the pre-maxillary region. The obturator was constructed with the first design bar with equator attachment (BEA) and screwed to the implants. The retention was measured at the base line and after 90,270,540,810,1080,1620,2160 cycles of insertion and removal respectively. Then the second design bar and clip attachment was constructed, screwed and retention testing procedures repeated as that for the first design. Universal testing machine was used for measuring the retentive forces of each retainer type. The vertical static load of 60 and 90 N was applied (loading machine) at three loading points on the obturator prosthesis for the two bar designs. The readings were tabulated and statistically analyzed. Results: Two-factor ANOVA followed by pair-wise Newman-Keuls post-hoc tests were performed to detect significance between variables (Attachment type and aging). Bar and clip design recorded slightly lesser retention force than that of BEA at base line and at all cycles of insertion and removal but with no significant difference between the two designs. But regarding the effect of aging within each group; there was a significant difference at different cycles of insertion and removal. But regarding the stress analysis Bar and clip recorded to some extent less microstrain values than BEA in most of surfaces at different points of loading. Conclusion: The retention force of Bar and clip was slightly lesser than BEA at any given cycle of insertion and removal. Reduction of mean retentive force continues to occur over time within each group. Bar and clip recorded less micro-strain values than BEA at most of the surfaces specially when applying the load on the posterior intact side.

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“…The advantages of this design include ease of insertion and removal of the RPD due to the hinge mechanism of the lingual bar and mesially positioned occlusal rests and minor connectors, no need for excessive tooth preparation except for rest seats, because back‐action clasps engage in naturally occuring mesiobuccal undercuts of premolar teeth, retention ability with the use of cast clasps, and ease of home care. The back‐action clasps with mesial rests also have been found to distribute occlusal loads as same as RPI and better than RPA clasps …”

Section: Discussionmentioning

confidence: 99%

A Collapsible Partial Denture for a Patient with Limited Mouth Opening Induced by Scleroderma: A Clinical Report

Türk

Ulusoy

2014

Journal of Prosthodontics

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A limited opening of the mouth is defined as microstomia. Microstomia is caused by burns, postoperative head and neck trauma, radiotherapy, or scleroderma. The prosthetic treatment of microstomia presents particular challenges, and patients often complain of an inability to insert or remove the prosthesis. The cause and severity of microstomia can influence the approach to treatment. Different treatment methods have been suggested, including the fabrication of two-piece partial dentures. This clinical report describes the construction of a sectional impression tray and a collapsed partial denture using a hinge attachment for a patient with microstomia.

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Load transmission evaluation by removable distal-extension partial dentures using holographic interferometry

Cited by 15 publications

References 9 publications

Determination of the dynamics of restored teeth by 3D electronic speckle pattern interferometry

Determination of the dynamics of restored teeth by 3D electronic speckle pattern interferometry

Evaluation of Stresses and Retention in Two Different Types of Bar Attachment Used in Implant Retained Maxillary Obturator

A Collapsible Partial Denture for a Patient with Limited Mouth Opening Induced by Scleroderma: A Clinical Report

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