[Dimensional variations in acrylic resins obtained by packing by compression or injection].
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Biomedical subjects
Publications and source records attributed to M Pezzoli.
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According to literature and personal research. 14 factors are of major importance in order to preserve abutment teeth and remaining supporting structures when a removable partial denture is needed. These concepts are described step by step.
The subject of prostheses on attachments is discussed with particular reference to the biomechanical aspects of tooth-borne dentures and extension-base-dentures. Commercial attachments can be classed as precision attachments and stress-breakers. The indications for the employment of each kind in accordance with individual situations and the degree of edentation are explained. The resort to attachments is, in any event, a compromise solution undertaken primarily for cosmetic reasons. Some types of attachments directly created in the laboratory, or controlled load distribution prostheses employing wired, enable a more personal solution to be elaborated to suit the needs of a given case.
The various stages and technique for the construction of a partial removable prosthesis based on the wire force distribution is possible to obtain an individual prosthesis suitable for every patient, something that is not possible with other conventional systems, such as prefabricated fittings.
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Prosthetic rehabilitation in cases of short dentition raises difficult problems, because a support must be found for free-end denture bases on both the edentulous crest and the remaining teeth. A prosthesis employing a wire device for the damping and distribution of forces and thus better able to supply this mixed support is described. Overloading of the abutments is avoided, along with the excessive reabsorption of the alveolar crest caused by classic damped appliances. Clinical experience in a series of cases treated over a period of ten years points to the effectiveness of this type of prosthesis.
A form of body decoration that developed in precolombian America is described and examined. The vestibular face and shape of the front teeth were altered in various ways, details of which are clear from archaeological discoveries (crania, teeth, ceramics, and statues). The various technical, social and cultural aspects of this practice are discussed with reference to their place in a civilisation whose works are still admired today.