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J J Wahle

Publications and source records attributed to J J Wahle.

4 recordsLinked to original sources

Dentinal surface roughness: a comparison of tooth preparation techniques.

Standardization of prepared dentinal surfaces for in vitro investigations is needed for evaluation of luting and bonding agents. Forty-eight intact, noncarious human molars were prepared either with silicon carbide paper mounted on a circular grinder or with carbide bur or a diamond mounted in a dental handpiece, and the dentinal surfaces were analyzed in a profilometer for surface roughness. The results were computed with a parametric ANOVA and Student-Newman-Keuls post hoc test. The dentinal surfaces prepared by Brasseler super coarse, coarse, medium, and Premier coarse diamonds by use of a high-speed dental handpiece with water spray were statistically different (p < 0.0001) but closely resembled a dentinal surface prepared by a 60-grit silicon carbide abrasive on a circular grinder. The fine diamonds resembled a prepared dentinal surface similar to a spectrum of SiC papers from 60 to 120 grits, whereas the carbide burs appeared to create various surfaces, depending on the manufacturer.

Carbon↗

Principles for selecting interocclusal records for articulation of dentate and partially dentate casts.

Minimizing the orientation error of the working and opposing casts on the articulator should reduce the extent of intraoral adjustment of restorations before their placement. This article defines and reviews principles such as the tripod of vertical support (three widely spaced occlusal contacts) and adequate horizontal stability, which enable opposing dental casts to be held together in a stable and reproducible manner at the time the mandibular cast is mounted to the articulator. During the restoration of the dentate or partially dentate patient, where restoration is to be coincident with pretreatment maximum intercuspation, the goal of the interocclusal record is to provide stability and/or support for the casts. The types of interocclusal records are organized into categories and designs based upon the remaining vertical support and horizontal stability of the dentition. The clinical indications, limitations, design, and composition of a variety of records for each of these categories are reviewed and discussed.

Dental Articulators↗

The mandibular swing-lock complete denture for patients with microstomia.

Regardless of cause, the treatment of an edentulous patient with microstomia is difficult and often ingenious. Prosthodontic treatment modalities previously described are reviewed. A new type of prosthesis, the collapsible mandibular swing-lock complete denture, is introduced. The prosthesis incorporates a cast cobalt-chromium framework with a lingual hinge and a conventional labial swing-lock. This combination allows the prosthesis to be collapsible while maintaining structural durability. Advantages include ease of insertion and removal while providing maximum coverage for support, retention, and stability. A stepwise technique for the clinical and laboratory phases is described.

Dental Impression Technique↗