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Biomedical subjects

E J Ireland

Publications and source records attributed to E J Ireland.

10 recordsLinked to original sources
PubMed1990

Can dentists recognize their own work? The forensic implications.

After 10 months, 71.4% of a group of dental students were able to recognize amalgam restorations that they had placed in the mouths of manikins. After 24 months, 57.1% of the group were able to recognize their work again. In contrast, only 5.5% of a second group of students, who did not have the interim viewing at 10 months, could recognize their work at 24 months. These results suggest that, with time, dental operators lose the ability to recognize their work but that this ability is prolonged by interim observations of the work. This study underscores the need for dentists to chart and record accurately any artifacts introduced into the patient's mouth, as well as any features that would make the patient unique upon forensic examination.

Dental Restoration, Permanent↗
PubMed1982

Stereoscopic vision and psychomotor learning in dental students.

A testing mechanism is needed for reliably predicting students' problems in acquiring dental psychomotor skills. Students and dental educators could then be made aware of potential problems well in advance of required manual course work. Because testing for stereoscopic vision has long been a part of perceptual-motor ability screening for the U.S. Air Force, a similar stereopsis test was used to examine the role of stereopsis in dental psychomotor learning and its potential as a predictor of student performance. The Lameris TNO Test for stereoscopic vision was given as an adjunct to the Perceptual Ability (PAT/3D) portion of the Dental Admission Test. Both test results were then compared to freshman students' performance in preclinical operative dentistry. Multiple regression analyses indicated that a high degree of stereopsis was not a prerequisite for success in acquiring dental psychomotor skills.

Aptitude Tests↗
PubMedDate not supplied

Explorer sharpness as related to margin evaluations.

Nine experienced operative dentistry faculty each used six different explorers of varying degrees of sharpness ranging from new to well-used to evaluate marginal acceptability on a device used to simulate gradations of vertical opening. In this study, the standard for the sharpest explorer point was determined to be 68 microns in diameter measured 40 microns from the tip. There was a positive correlation between the diameter of the explorer tip at 40 microns and the mean amount of opening that could be detected until the margin was declared unacceptable. Increased explorer dullness significantly handicapped even experienced graders when the explorer alone was used to evaluate visually inaccessible margins.

Dental Instruments↗
PubMedDate not supplied

Fabrication of a crown to fit an existing partial denture using castable glass.

In this case report, an accepted technique was used to fabricate a crown to fit an existing removable partial denture in which castable glass was used instead of gold. The use of castable glass allowed the crown to be cast directly from a wax-acrylic pattern and eliminated the need for templates to produce accurate facial contours in porcelain. Although castable glass has limitations and cannot be used in all such situations, the material can be used in selected cases where esthetics is important.

Acrylic Resins↗
PubMedDate not supplied

Modification of a vinyl glove into a dental dam for patients sensitive to latex rubber.

Dental products containing latex rubber such as rubber dams, gloves, polishing points, prophy cups, blood pressure cuffs, orthodontic elastics, mouth props, intubation tubes, and anesthetic masks have the potential to cause allergic reactions. The clinician should try to identify patients at high risk for latex sensitivity by taking a careful history and, where necessary, using alternative products. This paper describes how a vinyl glove can be easily modified to provide an effective dental dam in patients allergic to latex rubber.

Dental Restoration, Permanent↗