Biomedical subjects
Publications and source records attributed to J R Ivanhoe.
This article describes a procedure and a device to expedite the intraoral recontouring of teeth to receive removable partial dentures. This procedure is particularly useful when heights of contour are lowered on posterior teeth and the path of insertion is perpendicular to the plane of occlusion.
This authors make practical recommendations for a wide variety of clinical situations, including various anteroposterior and buccolingual arch discrepancies. Many of the ideals of the anatomical and mechanical schools of thought are blended. In addition to being a valuable clinical adjunct, Lingualized Occlusion also has great application in undergraduate dental education. It is a simpler occlusal scheme to teach and learn.
This article describes a technique that allows multiple master casts to be precisely oriented to the same path of insertion and withdrawal. This technique is useful in situations where multiple fixed prosthodontic preparations require surveyed restorations and a single master cast is not available.
This article describes the fabrication and modification of a peroral cone-positioning device. The modification provides added cone stability and prevents tongue intrusion into the radiation field. This device provides a repeatable accurate cone/lesion relationship and the fabrication technique is simplified, accurate, and minimizes patient discomfort.
This article describes a new implant placement surgical guide that gives both implant location and trajectory to the surgeon. Radiopaque markers are placed on diagnostic dentures and a lateral cephalometric radiograph is made that shows the osseous anatomy at the symphysis and the anterior tooth location. The ideal implant location and trajectory data are transferred to a surgical stent that programs the angle and location of the fixtures at time of surgery. The stent has the additional benefit of acting as an occlusion rim, a mouth prop, and tongue retractor. Use of this stent has resulted in consistently programming the placement of implant fixtures that are prosthodontically ideal.
A technique is described for constructing the implant-retained overdenture with heat-polymerized silicone that is processed around undercuts in a round bar framework connecting the implants. An acrylic resin circular rest contacting the bar ensures that the implants are loaded in occlusion for stress distribution over the fixtures.
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A method for making an improved index for the waxed stage of Branemark implant-retained frameworks is described. The index improves visibility of the tooth and abutment cylinder relationship permitting the optimization of framework dimensions and contour.
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This article describes a simplified method for making esthetic cast metal occlusal surfaces. Monoplane posterior acrylic resin block teeth, cast in a nickel-chrome alloy, are coated with silane and an esthetic composite resin veneer is applied to the buccal surface. These veneered posterior metal teeth are incorporated in the wax setup and the dentures are processed and finished. The dentist's routine technique for delivering dentures to the patient can be followed.
The authors provide a review of the critical aspects of occlusion for the combination fixed removable patient. Articular selection and jaw relation techniques are reviewed, and dental materials combinations are recommended for restoring opposing occlusal surfaces. General objectives and specific recommendations for determining and establishing occlusal schemes are made. Tables outlining occlusal scheme, occlusal morphology, and degree of balance are presented.
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This article discusses current concepts of occlusion and describes the methods of creating a physiologic occlusion for the partially edentulous patient. Specific recommendations are made for choices of materials, techniques, and occlusal schemes for various edentulous situations.