The one-step versus the two-step impression technique.
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Biomedical subjects
Publications and source records attributed to A Sadan.
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UNLABELLED: The fabrication of provisional veneers is time consuming, and may be unpredictable, especially in cases of multiple veneer preparations; however, functional and esthetic provisional veneers, may be used as diagnostic adjuncts for the fabrication of the definitive restoration. This article presents, in a step-by-step procedure, the use of a customized rigid clear matrix with light-cured composite resin as a fast alternative for the fabrication of functional and esthetic provisional composite resin veneers. CLINICAL SIGNIFICANCE: The use of a customized rigid clear matrix for the fabrication of light-cured composite resin provisional veneers has the following advantages: the shape and surface texture produced in the diagnostic wax-up are accurately transferred to the patient's mouth; the provisional restoration is fabricated without violation of the soft tissue and the margins of the preparations; use of the matrix can be repeated when needed; and esthetic and functional provisional veneers can be fabricated relatively quickly.
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One of the conservative and successful modalities of treatment for obstructive sleep apnea is the mandibular advancement prosthesis. This prosthesis engages teeth on both dental arches for retention and stability. This article describes a technique that allows the fabrication of such a prosthesis in one piece and in a single laboratory step. This may be beneficial in reducing the laboratory time required for fabrication of such a prosthesis.
Clinicians have long expressed concern about the accuracy of the Gothic arch tracing for recording centric relation in edentulous patients. With the use of dental implants to assist in retaining complete dentures, the problem of inaccurate recordings, made for patients without natural teeth, can be significantly reduced. This article presents a technique that uses healing abutments to stabilize the record bases so that an accurate Gothic arch tracing can be made.
Combining harmonious proportions of final restorations with periodontal health and stability surrounding these restorations is a basic fundamental in esthetic dentistry. However, when one can adversely affect the other, a clinical dilemma arises. This article describes a case with unfavorable proportions that may be worsened due to an existing unfavorable preparation design. A simple approach for diagnosis and treatment of such a situation is presented.
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Tetracycline-discolored teeth that are to be restored by porcelain laminate veneers present a clinical challenge. Successfully bleaching such teeth prior to veneering will permit the clinician and technician to overcome the technical difficulties associated with masking dark teeth. This article describes a combined treatment modality in which the teeth are bleached after the preparation for porcelain laminate veneers.
Advancements in implant therapy have expanded the prosthetic options available to treat edentulous patients. The dental professional must be able to accurately diagnose the status of the intraoral environmental in order to provide the patient with appropriate treatment and a suitable restorative result. Skeletal relationships, arch malalignment, implant angulation, and ridge morphology must be evaluated during initial treatment planning and incorporated into the definitive prosthetic result. This case report demonstrates the application of an implant-supported prosthesis to address the various complications presented in the treatment of edentulous patients.
Because of their unique radicular anatomy, mandibular molars require careful treatment planning for post-and-core fabrication. Indications for post-and-core fabrication for endodontically treated mandibular molars are discussed, and immediate and cast post-and-core techniques are reviewed. An alternative design for a cast post and core is also presented.
The milled implant-supported prosthesis offers the benefits of fixed and removable restorations. Its infrastructure provides the same rigidity as the fixed restoration, due to the precise fit to the superstructure that is removable to promote adequate access for hygiene, yet provides lip support and maintains close contact with the soft tissues. These advantages enhance phonetics, aesthetics, correct lip support, and maintenance. The learning objective of this article is to discuss the indications for milled implant-supported restorations, review the scientific background of materials and techniques utilized, and describe the clinical and laboratory procedures involved. An uncomplicated and cost-effective impression technique is outlined, and the numerous steps of infra- and superstructure fabrication are presented.
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Achieving an accurate final impression is the initial step in the fabrication of the definitive restoration. If polyether is to be utilized for the final impression, obtaining an additional impression may minimize the risk of fractured abutments. In addition, transportation conditions to the dental laboratory that may expose the impression to extreme temperatures should necessitate the pouring of the impression prior to shipping.
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