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Biomedical subjects

E M Amet

Publications and source records attributed to E M Amet.

11 recordsLinked to original sources
PubMed1998

Computerized tomography with CT models for contemporary ramus frame implant planning and construction.

Loss of bone in the mandible after tooth removal is associated with anatomic and aesthetic complications and instability of the mandibular complete denture. This continuing bone loss is not limited to alveolar bone; portions of the basal bone may also be resorbed. Thus, mandibular complete denture is the most unstable, unretentive, conventional prosthesis fabricated in routine dental practice. Root-form endosteal implants cannot always be placed in advanced atrophic mandibles without autogenous bone grafting (from either the iliac hip crest or another site) or bone regeneration. The ramus frame implant (RFI) is indicated when the atrophy in the mandible is advanced. An RFI is an immediate, totally implant-supported prosthesis, which can use homologous grafting material and platelet-rich plasma for increased bone regeneration. The third-generation RFI provides all of the benefits of the first- and second-generation RFIs as well as improvements provided by computed tomography and computer-aided design/stereolithography applications: planning, simplified placement, improved grafting, predictable manufactured components, and retrievability.

Alveolar Bone Loss↗
PubMed1997

Implant treatment planning using a patient acceptance prosthesis, radiographic record base, and surgical template. Part 1: Presurgical phase.

The use of a patient acceptance prosthesis as a radiographic record base after incorporation of a radiopaque medium to optimize information from computed tomography scans for implant planning and prosthodontic design is presented. The patient acceptance prosthesis can also be used as a surgical template. By receiving the patient's acceptance of the prosthesis before computed tomography scans are done, the potential for success is increased.

Adult↗
PubMed1995

Fixed provisional restorations for extended prosthodontic treatment.

During extensive and extended prosthodontic treatment, there is need for a durable esthetic fixed provisional restoration that can be easily modified as treatment is completed and that is cost-effective. The needed strength of provisional restorations can be underestimated, and the management of complex treatment is then more difficult and the prosthetic results less predictable. Knowledge of the criteria for treatment restorations and the adequacies of their construction is essential for the prevention of catastrophic failures, patient management problems, and compromised results. Many times in complex prosthodontic treatment, changes are needed in esthetics, the plane of occlusion, incisal edge position, lip support, and type of occlusion, or the soft and/or hard tissues need to be altered or grafted surgically. In addition, after first- and second-stage implant surgery and extractions, there is a need for immediate tooth replacement with extended time between prosthodontic treatments. These prosthodontic changes and challenges can be addressed with reinforced acrylic provisional restorations that are adequately cemented and retained during the interim stage of healing and treatment. In addition, the provisional restoration should serve as a guide for the final restoration while esthetics and phonetics are evaluated for patient acceptance. This article describes the materials used with an indirect technique for fabrication of an extended-treatment acrylic provisional restoration that uses an internal cast metal support system for strength. This support system consists of metal bands or copings with extensions into edentulous areas and that have been opaqued to neutralize the metallic color. A matrix of vinyl polysiloxane made from the diagnostic wax-up simplifies construction of the acrylic, resulting in a strong, ridged, yet esthetic result.

Acrylic Resins↗
PubMed1993

A unique method of combining teeth and endosseous implants for a stable removable prosthesis.

This report documents a unique use of osseointegrated implants for preservation of a patient's remaining dentition after the loss of many teeth and presents the following ideas: how to combine natural teeth with endosseous implants by means of commercially available analogues and impression posts used in an indirect technique; how to have retrievability of the implant-connecting bar from the teeth and implants; how to be able to replace natural teeth at any time with endosseous implants should they be lost; how to have provisional restorations that are always fixed during the treatment phase; how to simplify the jaw relationship and prosthetic replacement of missing oral structures; and how to have a stable, removable, easily replaceable and maintainable, prosthesis.

Adult↗
PubMed1977

Pulp response to Enamelite restorations in teeth of rhesus monkeys.

The average magnitudes of cellular displacements, superficial responses, and deep responses were less for specimens restored with ZOE than for Enamelite specimens at the 1 week postoperative period. Of 20 teeth treated, three abscesses were found in the 1 week Enamelite postoperative period when the remaining dentin was 0.3 mm. or less. This indicates the presence of ingredients that are toxic to the pulp when there is little remaining dentin or when the material is placed directly over an exposure. Teeth restored with Enamelite in the 6 week group had values comparable to the ZOE teeth for the same time period.

Animals↗