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Biomedical subjects

M I MacEntee

Publications and source records attributed to M I MacEntee.

72 records · Page 4Linked to original sources
PubMed1979

Personal identification using dental prostheses.

A personal identity mark may be added to a metal or an acrylic resin prosthesis. The importance of this technique, particularly in terms of forensic investigation and identification, should make it a compulsory dental procedure. Where metal is involved, engraving is the most desirable method of marking. The heat resistance of various labeling materials indicates that an acrylic resin prosthesis should contain a marked, heat resistant material together with a mark clearly visible from the denture surface.

Acrylic Resins↗
PubMedDate not supplied

Effects of a 1% chlorhexidine gel on the cariogenic bacteria in high-risk elders: a pilot study.

Root caries in dentate elderly patients is a problem which may be controlled with chlorhexidine. The purpose of this pilot study was to establish the extent and duration of the antimicrobial effects from an intensive regimen of a 1% chlorhexidine gel in institutionalized elders who had experienced high caries activity in the previous year. Stimulated saliva samples from all subjects before treatment produced more than 105 colony forming units/milliliters of Streptococcus mutans (mean: 2.0 x 10(7); s.d.: 2.0 x 10(7)) when diluted and cultured on Mitus Salivarius-bacitracin agar for 48 hours. Findings suggest that daily treatments for 1 week with a 1% chlorhexidine gel can reduce the number of cariogenic bacteria in elderly people for approximately 3 weeks after treatment.

Aged↗
PubMedDate not supplied

Ethical issues encountered by dentists in the care of institutionalized elders.

Increasing numbers of institutionalized elders have very poor oral health. It has been suggested that ethical problems may influence dentists who attempt to provide oral care for these people, but little attention has been given to research in this area. A qualitative interview method was used to investigate the the views and experiences of dentists working with institutionalized elders. Particular attention was given to the ethical difficulties encountered and how the dentists resolved them. Ten dentists experienced in long-term care were interviewed individually by means of open-ended questions. Thematic analysis identified ethical problems focused on the difficulty of identifying the wishes of patients or predicting the outcome of treatment. The participants reported few difficulties in making clinical decisions in this setting. However, analysis revealed that the ethical perspectives of the dentists varied substantially. Variation was notable particularly in their preference for ideal or practical treatment and in their preference for autonomy of beneficence.

Aged↗
PubMedDate not supplied

Dental caries in chronically disabled elders.

Dental caries is the major cause of tooth loss in elderly individuals with physical and mental disabilities. The diagnosis of caries in elderly individuals is difficult due to a complicated oral environment compounded by the prevalence of physical and mental barriers to care. The restoration of tooth structure and the replacement of teeth lost due to caries result in considerable economic and biological cost to both individuals and society. Decisions to remineralize, restore, or extract teeth depend largely upon the extent of the structural damage caused by the infection. Teeth with small lesions can be remineralized with fluorides, whereas teeth with large lesions may be restored or extracted. Caries risk assessment based on the history of previous infection, salivary parameters, and ingestion of sugar can be used as a basis for placing a patient on a caries-preventive regimen. This paper discusses the pathophysiology of caries to explain the appropriate diagnosis, prevention, and treatment of dental caries in elderly individuals with chronic disabilities.

Aged↗
PubMedDate not supplied

Conflicting priorities: oral health in long-term care.

Open-ended interviews were conducted with 109 individuals. These included: administrators, staff, dental personnel, residents, and family members, associated with 12 long-term-care (LTC) facilities to contrast different human resource and organizational strategies for managing the delivery of oral health care to the elderly residents. A multiple case-study analysis revealed that no particular organizational strategy was ideal, although three important components--oral hygiene, diagnostic assessments, and dental treatment--were common to all. The dental personnel everywhere believed that oral health in the midst of other conflicting priorities received inadequate attention, while the administrators and staff acknowledged that they were weak at recognizing oral disorders and assisting with oral hygiene. In all, the interviews offered a portrait of the conflicting priorities associated with LTC, and they provide practical insights to successful strategies of care in this population.

Administrative Personnel↗
PubMedDate not supplied

A comparison of two methods for removing zinc oxide-eugenol provisional cement.

Two methods of removing zinc oxide-eugenol (ZOE) luting cement from amalgam were compared by determining their effect on the tensile bond strength of amalgam cylinders luted together using a 4-META resin cement. The samples were examined using scanning electron microscopy and energy dispersive x-ray analysis. Results showed that mechanical cleansing with pumice leaves ZOE residue mixed with pumice, which inhibits bonding, while the bond strength of samples cleansed with a dental degreasing agent was similar to that of an uncontaminated control group.

Acrylic Resins↗
PubMedDate not supplied

A retrospective study on the maintenance and repair of implant-supported prostheses.

This study reviewed the prosthodontic treatment and aftercare required by 29 patients with 32 implant-supported prostheses (12 fixed and 20 removable) placed on 107 implants. Patients were followed for 4 to 39 months. The majority of implant-supported prostheses (53%) were placed in the mandible. Visual analogue scales were used by the patients to rate their satisfaction with their prostheses and their chewing ability. Approximately one third of the patients studied required three or more relines of their existing dentures between first- and second-stage surgeries, while over half of the definitive implant-supported prostheses required a major adjustment or repair. Removable prostheses required 78% of the total repairs and accounted for 80% of those prostheses that needed repeated repairs. In general, patients were very satisfied with their implant-supported prostheses, but 17% complained of mild speech difficulties and 7% noted slight difficulty in cleaning their fixed prostheses. Overall, the short-term prosthetic management required for the implant-supported prostheses in this study was substantial, particularly with the removable prostheses, and this should be taken into account when evaluating prosthetic options.

Dental Clasps↗
PubMedDate not supplied

Cost analysis of fabricating implant prostheses.

This prospective study analyzed the time and costs involved in fabricating implant prostheses in private practice and the factors affecting prosthesis design. Esthetic was the most commonly reported factor influencing the decision to use a fixed or removable prosthesis, while cost was infrequently cited. The single-tooth fixed implant required the least time to fabricate and had the lowest clinical fees, while the removable bar/clip prosthesis had the highest fees and demanded the greatest amount of time to fabricate. Single-tooth fixed and individual attachment removable prostheses generated approximately half the hourly income produced by multiple-unit fixed and bar/clip removable implant prostheses, and the individual attachment design had the highest ratio of expenses to income.

Canada↗
PubMedDate not supplied

Opinions of dentists on an integrated fixed and removable prosthodontic curriculum.

Dentists in practice from 3 to 5 years who were exposed to an integrated fixed and removable prosthodontic curriculum as students at the University of British Columbia responded to a survey on the relevance of their prosthodontic education to current dental practice. The majority of the respondents reported that the integrated curriculum prepared them adequately for general dental practice, although many felt that they would have benefited from a greater emphasis on specific treatments, most notably cast metal inlays and onlays, all-ceramic restorations, and implant-supported prostheses.

Chi-Square Distribution↗
PubMedDate not supplied

A prospective study on the maintenance of implant prostheses in private practice.

This study examined the adjustments, repairs, time, and costs required to maintain 69 implant prostheses in private prosthodontic practice for an average of 22 months after placement. For the removable prosthesis design, the most common adjustment was contouring the prosthesis and the most common repair was retentive component replacement. Screw tightening or fracture repair were the most frequently needed modifications for fixed implant prostheses. Each removable implant prosthesis averaged four times as many postplacement adjustments and almost twice as many repairs as did each fixed implant prosthesis, and the mean length of each maintenance appointment was also longer for removable prostheses. Mean repair costs were approximately 60% higher for the removable design.

Adult↗