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Biomedical subjects

D A Perry

Publications and source records attributed to D A Perry.

31 records · Page 2Linked to original sources
PubMed1990

Diffuse intermediate lymphocytic lymphoma. A clinicopathologic study and comparison with small lymphocytic lymphoma and diffuse small cleaved cell lymphoma.

Controversy has recently arisen as to whether diffuse intermediate lymphocytic lymphoma (ILL) should be considered a low-grade or an intermediate-grade non-Hodgkin's lymphoma for clinical purposes. Therefore, the authors performed a clinicopathologic study to determine the biologic course of diffuse ILL (40 cases) and compared it with small lymphocytic lymphoma (SLL; 51 cases) and diffuse small cleaved cell lymphoma (DSCCL; 14 cases). They found that patients with diffuse ILL having pseudofollicular proliferation centers (PC) had a significantly longer median survival (84 months) than those without PC (46.5 months; P = 0.03). The median survival of patients with SLL was 72 months, whereas those with DSCCL had a median survival of only 18 months. Based on these findings, the authors conclude that diffuse ILL with PC should be included in the low-grade category of SLL for clinical purposes, whereas diffuse ILL without PC (true diffuse ILL) should be considered an intermediate-grade non-Hodgkin's lymphoma. True diffuse ILL is similar to centrocytic lymphoma in the Kiel classification and should be accorded a similar status in a modified Working Formulation.

Adult↗
PubMed1990

Occurrence of periodontitis in an urban adolescent population.

The presence of periodontitis in 307 black, Hispanic, and Asian students age 12 to 15 years was evaluated by calibrated examiners in a Los Angeles inner city junior high school. The periodontal status of maxillary and mandibular incisors and permanent first molars was evaluated using the Plaque Index, probing depth, attachment loss, bleeding on probing, tooth mobility, presence of calculus, and caries. Thirty-nine (12.7%) of 307 students had 5 mm or deeper probing depths and associated attachment loss of at least 2 mm and were considered to have periodontitis (PD). The PD group had significantly more bleeding, calculus, and missing teeth than the non-PD group, but both groups had moderate to severe plaque accumulation. The distribution and severity of disease increased with age. Deeper probing depths were associated with the molar teeth and six (15.4%) of the 39 subjects in the PD group had furcation involvement. Clinical screening alone was not sufficient to determine if the periodontitis seen was localized juvenile periodontitis; however, the program detected a high occurrence of periodontitis in this population group.

Adolescent↗
PubMedDate not supplied

Practice characteristics of dental hygienists operating independently of dentist supervision.

PURPOSE: This paper presents business characteristics of ten experimental independent dental hygiene practices operating in California between 1987 and 1990. Sixteen dental hygienists participated in the experiment, the Health Manpower Pilot Project 139 (HMPP 139). HMPP 139 dental hygienists wanted to work independently in traditional office-based settings, institutional settings, and other arrangements. They worked in group and solo practices, on a full- or part-time basis. METHODS: Data were collected from the HMPP 139 practices on services provided, patient visits, fees charged, referrals to dentists, acceptance of Medicaid patients, and services to organizational clients. Data collection methods varied, depending on the question addressed. Surveys of dentists' offices provided data on fees and Medicaid policies for comparison with the independent dental hygiene practices. RESULTS: All experimental practices attracted new patients for each quarter in operation. These practices mostly provided prophylaxis treatments; however, a wide variety of services was provided. Fees charged in HMPP 139 office-based practices were less than comparable fees charged in dentists' offices. At least one-third of patients in the HMPP 139 office-based settings received a referral to or an opinion about a dentist from the dental hygienist. HMPP 139 practices were more available to Medicaid patients than were California dentists offices. Each experimental independent practice provided care to at least one client in a nontraditional setting. CONCLUSIONS: The HMPP 139 practices consistently attracted new patients. This suggests independent practice for dental hygienists may be a viable and flexible alternative if the practices can stabilize total patients at a sufficiently high level. An independent practice alternative might increase access to care, contain fees, and direct the flow of patients to dentists. Further study is needed to test these findings.

California↗