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Biomedical subjects

M MacEntee

Publications and source records attributed to M MacEntee.

9 recordsLinked to original sources
PubMed2002

Assessment of periodontal conditions and systemic disease in older subjects. II. Focus on cardiovascular diseases.

BACKGROUND: Panoramic radiographs (PMX)s may provide information about systemic health conditions. AIMS: i). To study clinical periodontal conditions and collect self-reported health status in a cohort of 1084 older subjects; ii). to study signs of alveolar bone loss and carotid calcification from panoramic radiographs obtained from these subjects; and iii). to study associations between study parameters. MATERIAL AND METHODS: PMXs from 1064 adults aged 60-75 (mean age 67.6, SD +/- 4.7) were studied. Signs of alveolar bone loss, vertical defects, and molar furcation radiolucencies defined periodontal status. Medical health histories were obtained via self-reports. Signs of carotid calcification were identified from panoramic radiographs. RESULTS: The PMX allowed assessment of 53% of the films (Seattle 64.5% and Vancouver 48.4%). A self-reported history of a stroke was reported by 8.1% of men in Seattle and 2.9% of men in Vancouver (P < 0.01). Heart attacks were reported by 12% of men in Seattle and 7.2% in Vancouver (N.S.). PMX evidence of periodontitis was found in 48.5% of the subjects, with carotid calcification in 18.6%. The intraclass correlation score for PMX findings of carotid calcification and stroke was 0.24 (95% CI: 0.10-0.35, P < 0.001). The odds ratio for PMX carotid calcification and periodontitis was 2.1 (95% CI: 1.3-3.2, P < 0.001), and for PMX carotid calcification and stroke 4.2 (95% CI: 1.9-9.1, P < 0.001). The associations disappeared when smoking was accounted for. A history of a heart attack was associated with stroke, gender, age, and PMX scores of alveolar bone loss. CONCLUSIONS: PMXs may provide valuable information about both oral conditions and signs of carotid calcification, data that are consistent with self-reported health conditions. Alveolar bone loss as assessed from PMXs is associated with cardiovascular diseases.

Aged↗
PubMed1990

Porcelain and resin veneers clinically evaluated: 2-year results.

A clinical comparison of two different types of dental veneers--baked porcelain veneer and heat-and-pressure processed urethane resin veneer--was made after 2 years. Although the esthetic appearance and gingival response were equal for both systems, the resin veneers had a greater tendency to chip and fracture. By the end of 2 years, 20% of the resin veneers had failed, whereas all of the porcelain veneers remained.

Acrylic Resins↗
PubMed1987

A classification of precision attachments.

This overview of attachments is intended to provide an explanation of the design characteristics of 13 different groups. The clinical situation for which an attachment is intended will place specific demands that can be met more closely if the forces acting on the prosthesis are considered. No universal or ideal design is available, so if attachments are used, they should be selected from the group with the most suitable characteristics for the task required. The stress-breaking effect of attachments is vague. They offer a potential for rotational and resilient movement between the prosthesis and the abutment teeth, but the amount of stress that must be broken to protect the periodontium of the teeth may exceed the capabilities of any particular attachment used. Nevertheless, attachments can provide an effective answer to prosthesis stability and retention in a way that is cosmetically pleasing.

Denture Design↗
PubMed1979

Obturator-overdentures retained by nonrigid attachments.

A technique is described to attempt to predictably retain a few remaining teeth for added stability and retention of a complete maxillary denture combined with a nasopharyngeal obturator. A male nonrigid attachment is added to copings on the retained roots, and the female attachments are incorporated in the denture base.

Dental Cavity Preparation↗
PubMedDate not supplied

An international comparative multicenter study of assessment of dental appearance using computer-aided image manipulation.

PURPOSE: The aim of the present investigation was to perform an international multicenter comparison of dental appearance as evaluated by dentists, dental technicians, and nondental subjects. MATERIALS AND METHODS: The participants were drawn from three groups: 203 dentists, 197 dental technicians and 254 nondental subjects. The methods developed in a previous study in Sweden were applied again in seven centers located in six countries. A questionnaire, accompanied by five sets of computer-manipulated images portraying one man and one woman, was used to prompt and record responses to different aspects of dental appearance and function. RESULTS: The questionnaire revealed that both the dental appearance and function of teeth were important to most of the participants, but three quarters of the participants did indicate that good dental function was more important that esthetics. More women (30%) than men (18%), however, placed greater importance on appearance. Age or gender did not influence judgments of the computer-manipulated images, although judgments did vary greatly within the three groups and between the centers. Nonetheless, highly colored teeth were preferred more often by nondental subjects than by dentists or dental technicians. CONCLUSION: Computer-aided image manipulation shows promise as a method for investigating the significance of dental-related beliefs, especially those relating to esthetics, in different population groups. The evaluation of dental appearance and function in this study indicated that dental function is held in greater regard, and that the significance of dental appearance varies widely among dentists, dental technicians, and nondental subjects.

Adolescent↗