PURPOSE The objective of this project was to develop an in vitro model system for investigations of dentinal caries. METHODS Five extracted primary molar teeth with circular cavity preparations to the depth of the dentinoenamel junction were mounted individually in cold-cure acrylic bases constructed to fit a positioning jig in a Schick-Technologies digital radiographic imaging apparatus. The...

“Clinical Showcase” is a series of pictorial essays that focus on the technical art of clinical dentistry. The section features stepby-step case demonstrations of clinical problems encountered in dental practice. If you would like to contribute to this section, contact editor-in-chief Dr. John O’Keefe at [email protected]. The preparation of esthetically appealing and anatomically correct impl...

Esters of acrylic acid, in particular methyl methacrylate, have wide applications in a number of industrial and consumer products, forming very desirable nonbreakable glass-like materials. In dentistry, the monomers are used to prepare dentures and a variety of filling and coating materials for the teeth. Surgeons utilize the monomers to prepare a cement which helps anchor prosthetic devices to...

Achievement of an esthetic single-tooth restoration in the anterior segment is a difficult task for the restorative dentist. A case is described in which two congenitally missing maxillary lateral incisors were replaced with single-tooth implants. A new technique was used to restore the teeth provisionally with a polyethylene ribbon and resin replacement. Light-cured staining systems for acryli...

The purpose of this report is to present educational material that would allow the dental student to learn to easily identify the morphologic characteristics of permanent teeth, and how they fit together (occlusion). In order to do this, macro models of permanent teeth with no attrition were carved in wax and later molded with alginate. These molds were filled with plaster, dental stone and/or ...

Mandibular fractures in infants are rare. This case report describes management of a mandibular fracture in an 11-month-old infant using a microplate and screws with open reduction. The surgical treatment was successful. Because the bone fragments were displaced and only the primary incisors had erupted, conservative treatment, such as an acrylic splint and circummandibular wiring, was not reco...

Mr. P is a 69-year-old male who presents with a chief complaint of, “I have neglected my teeth for 20 years and I’d like to have them fixed.” He is a lifelong nonsmoker, in good health, with no known drug allergies and no significant past medical history. Dental findings are notable for significant edentulousness: teeth numbers 1, 2, 3, 5, 7, 10, 13, 16, 17, 18, 19, 20, 30, 31, 32 are not prese...