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At least 775 records · Page 43Linked to original sources
PubMed2004

Removable partial denture occlusion.

No single occlusal morphology, scheme, or material will successfully treat all patients. Many patients have been treated, both successfully and unsuccessfully, using widely varying theories of occlusion, choices of posterior tooth form, and restorative materials. Therefore, experience has demonstrated that there is no one righ r way to restore the occlusion of all patients. Partially edentulous patients have many and varied needs. Clinicians must understand the healthy physiologic gnathostomatic system and properly diagnose what is or may become pathologic. Henderson [3] stated that the occlusion of the successfully treated patient allows the masticating mechanism to carry out its physiologic functions while the temporomandibular joints, the neuromuscular mechanism, the teeth and their supporting structures remain in a good state of health. Skills in diagnosis and treatment planning are of utmost importance in treating these patients, for whom the clinician's goals are not only an esthetic and functional restoration but also a lasting harmonious state. Perhaps this was best state by DeVan [55] more than 60 years ago in his often-quoted objective. "The patient's fundamental need is the continued meticulous restoration of what is missing, since what is lost is in a sense irretrievably lost." Because it is clear that there is no one method, no one occlusal scheme, or one material that guarantees success for all patients, recommendations for consideration when establishing or reestablishing occlusal schemes have been presented. These recommendations must be used in conjunction with other diagnostic and technical skills.

Dental Occlusion↗
PubMed2004

Internal porosity of cast titanium removable partial dentures: influence of sprue direction and diameter on porosity in simplified circumferential clasps.

OBJECTIVE: The behavior of molten titanium in molds of complicated shape is still insufficiently understood; consequently, definite spruing criteria are not yet available for titanium RPD frameworks. This study investigated the influence of sprue design on porosity in pressure-cast titanium circumferential clasps. METHODS: The patterns of 90 circumferential clasps were sprued with three directions (0, 30 and 60 degrees , as measured between the sprue and the symmetry plane of the clasp assembly) and three sprue diameters (1.5, 2.0 and 2.5mm). CPTi was cast in a one-chamber pressure casting machine. Pore number and size were assessed on radiographs of the castings. Statistical analysis was done by two-way analysis of variance (ANOVA), followed by Fisher's PLSD post hoc test. RESULTS: The porosity in lingual arms increased significantly with increase of sprue diameter and sprue angle, while the porosity in minor connectors had an inversely proportional distribution. Very low porosity, uninfluenced by sprue design, was found in buccal arms. In conclusion, internal porosity in titanium circumferential clasp arms can be minimized through sprue design: the 0 degrees sprue direction produced the least porosity, while for the 30 and 60 degrees directions, 1.5mm diameter sprues produced lower porosity than 2.0 and 2.5mm diameter sprues. SIGNIFICANCE: In this study, the lowest porosity in titanium circumferential clasp arms was obtained with sprues attached perpendicularly to the minor connectors, regardless of sprue diameter. Conventional sprue directions produced significantly higher porosity in clasp lingual arms, the amount of porosity increasing with sprue diameter.

Analysis of Variance↗
PubMed2005

Use of a light-polymerized composite removable partial denture base for a patient hypersensitive to poly(methyl methacrylate), polysulfone, and polycarbonate: a clinical report.

This article describes a light-polymerized composite denture base used for a patient with hypersensitivity to poly(methyl methacrylate) (PMMA), polysulfone (PSF), and polycarbonate (PC). A urethane-dimethacrylate (UDMA) composite was used as an alternative to fabricate both the denture base and the custom artificial teeth. Immediately after placing the new prosthesis, allergic symptoms disappeared from the patient's mucous membrane. The denture has functioned satisfactorily for more than 2.5 years without recurrence of the hypersensitivity.

Acrylic Resins↗
PubMed2005

Use of a removable partial denture in the management of chronic screw loosening.

Lack of posterior support can result in adverse occlusal forces being placed on anterior teeth. These forces may cause fremitus, splaying of the anterior teeth, and even accelerated wear. When implant-supported restorations are used, a common indicator of overload is screw loosening. This clinical report demonstrated conservative management of a patient who presented with multiple episodes of screw loosening of an implant-supported restoration replacing the maxillary left incisor secondary to developing reduced posterior support. Ideal treatment would be to re-establish posterior support by means of implant-supported restorations; however, this option was constrained by finances.

Dental Implants, Single-Tooth↗
PubMed1991

Cingulum bar as a major connector for mandibular removable partial dentures.

In the international literature and textbooks, the cingulum bar as a mandibular major connector is often neglected. It is a viable alternative to a lingual bar where the distance between the marginal gingivae and the mucolingual fold is restricted. It also provides indirect retention and thereby eliminates the need for a conventional indirect retainer. Patient comfort with an RPD with a cingulum bar seems acceptable because the connector forms one unit with the anterior teeth. The replacement of a lost natural anterior tooth with a denture tooth is not difficult. The metal bulk of the bar may be a disadvantage and esthetics may be compromised if spacing is present. Marked lingual inclination of the anterior teeth prevents the use of a cingulum bar. Different laboratory requirements are discussed.

Denture Design↗