Boundary spanning and health: invitation to a learning community.

Boundaries, which are essential for the healthy functioning of individuals and organisations, can become problematic when they limit creative thought and action. In this article, we present a framework for promoting health across boundaries and summarise preliminary insights from experience, conversations and reflection on how the process of boundary spanning may affect health. Boundary spanning requires specific individual qualities and skills. It can be facilitated or thwarted by organisational context. Boundary spanning often involves risk, but may reap abundant rewards. Boundary spanning is necessary to optimise health and health care. Exploring the process, the landscape and resources that enable boundary spanning may yield new opportunities for advancing health. We invite boundary spanners to join in a learning community to advance understanding and health.

Childhood lead exposure and uptake in teeth in the Cleveland area during the era of leaded gasoline.

Childhood uptake of lead from exposure to atmospheric leaded gasoline in the United States has been studied using mainly blood lead levels. Since reliable blood lead techniques were used only after the peak use of leaded gasoline, the prior exposure history is unclear. The well-documented decline in blood lead levels after the mid-1970s could represent the continuation of a historic steady decline in exposure from many sources. Alternatively, the post-1970s decline might represent the declining phase of a unimodal rise and fall corresponding closely to usage of leaded gasoline. To assess these possibilities, lead concentration and 207Pb/206Pb isotope ratios were measured in the enamel of permanent molar teeth formed between 1936 and 1993 in mainly African-American donors who grew up in the Cleveland area. Tooth enamel preserves the lead concentration and isotope ratio that prevails during tooth formation. Historical trends in enamel lead concentration were significantly correlated with surrogates of atmospheric lead exposure: lead in sediments of two dated Lake Erie cores, and lead consumed in gasoline. About two-thirds of the total lead uptake into enamel in this period was attributable to leaded gasoline, and the remainder to other sources (e.g. paint). Enamel 207Pb/206Pb isotope ratios were similar to those of one lake sediment. Multivariate analysis revealed significant correlation in neighborhoods with higher levels of traffic, and including lake sediment data, accounted for 53% of the variation in enamel lead levels. Enamel lead concentration was highly correlated with reported African-American childhood blood levels. The extrapolated peak level of 48microg/dL (range 40 to 63) is associated with clinical and behavioral impairments, which may have implications for adults who were children during the peak gasoline lead exposure. In sum, leaded gasoline emission was the predominant source of lead exposure of African-American Cleveland children during the latter two-thirds of the 20th century.

A multimethod investigation including direct observation of 3751 patient visits to 120 dental offices.

This report defines verbal interactions between practitioners and patients as core activities of dental practice. Trained teams spent four days in 120 Ohio dental practices observing 3751 patient encounters with dentists and hygienists. Direct observation of practice characteristics, procedures performed, and how procedure and nonprocedure time was utilized during patient visits was recorded using a modified Davis Observation Code that classified patient contact time into 24 behavioral categories. Dentist, hygienist, and patient characteristics were gathered by questionnaire. The most common nonprocedure behaviors observed for dentists were chatting, evaluation feedback, history taking, and answering patient questions. Hygienists added preventive counseling. We distinguish between preventive procedures and counseling in actual dental offices that are members of a practice-based research network. Almost a third of the dentist's and half of the hygienist's patient contact time is utilized for nonprocedure behaviors during patient encounters. These interactions may be linked to patient and practitioner satisfaction and effectiveness of self-care instruction.

Caring for African-American patients in private practice: disparities and similarities in dental procedures and communication.

UNLABELLED: OBJECTIVE. Disparities in oral health care among racial and low socioeconomic groups have been reported. The authors compared the communication behaviors and dental services to African-American and white patients in private dental offices. METHODS: and Subjects. The investigators directly observed office visits of 292 black and 1,552 white patients in 64 practices by using standardized checklists for the frequency of services provided and frequency and time of communication behaviors. From patient surveys, they constructed three communication scales and a patient satisfaction score. They examined the effects of provider-patient racial concordance on dental services and observed and perceived communication behaviors by using multiple regression analyses. RESULTS: Groups of black and white patients had similar demographic characteristics. Dental procedures were similar for black and white patients in offices with white providers. Compared with white patients, black patients with white providers reported lower ratings for how well the dentist knew them (P = .001), but patients' satisfaction with their providers was high and not affected by provider-patient racial concordance. After multivariate adjustment, odds of chatting were significantly lower between black patients and white providers than between racially concordant patients and providers (odds ratio = 0.38; P < .001), whereas odds of negotiation were lower among black patients regardless of the race of the provider. CONCLUSIONS: In this study sample, the investigators did not observe overt disparities in dental services on the basis of race. They noted that some communication behaviors were influenced by dentist-patient racial concordance, which suggests the possibility of more subtle disparities than usually are considered. CLINICAL IMPLICATIONS: Dental professionals could benefit from understanding their patients' perceptions of a range of interactions that occur during a typical dental visit.

A regional survey of dentists' preferences for hiring a dental associate.

BACKGROUND: For many new dental school graduates, working as an associate may be an attractive option. To provide practical information for new job-seeking dentists, the authors conducted a survey to assess dentists' preferences with regard to hiring an associate. METHODS: The authors mailed surveys to a random sample of 3,875 general dentists in four states that asked questions about the characteristics they preferred when hiring an associate. Five hundred seventy-four dentists (14.8 percent) responded to the survey. RESULTS: The results of this survey showed a wide variation in the characteristics dentists prefer when hiring an associate, but interpersonal skills appear to be at least as important as technical skills for new dentists' success. CONCLUSIONS: Opportunities for associate positions appear to be available to new dentists who have a range of skills, experience and training. Practical Implications. These results provide new dentists with information regarding the variety of career opportunities available for associates.

Revisiting comfort: strategies observed in the direct observation study.

The Surgeon General's 2000 report on oral health found that one-third of adults in the U.S. had not visited a dentist in the previous year. Fear of treatments received during a dental encounter can create a barrier to patients receiving care. Most studies of dental anxiety have focused on phobic patients; relatively few studies have explored attempts to provide comfort and alleviate anxiety among everyday patients. This study describes comforting strategies that were performed by dentists, dental assistants, and hygienists for their patient population as a whole. As part of the Direct Observation Study, 120 dental practices in Ohio were observed over a four-day period by trained research hygienists. Researchers observed and recorded 3,800 patient interactions with dentists and hygienists at 30-second intervals using 24 behavior-specific codes. In addition, observers composed qualitative notes detailing the patient visits and recorded in their notes specific comforting techniques performed by dentists, hygienists, and dental assistants.

Endodontic treatment in an American Indian population: a 10-year retrospective study.

An epidemiological study of a regional population of Native Americans receiving treatment from 1991 to 2000 (n = 5460) was conducted via electronic survey. The objectives were to identify factors affecting the retention of endodontically treated teeth and to determine frequencies of endodontic care. Multiple factors were assessed. Analyses utilized chi(2) and frequency tests. The results indicated that endodontists tend to complete most posterior teeth and retreatment cases, while generalists tended to complete anterior teeth, primary endodontic therapy, and to restore immediately. Patients with multiple systemic diseases (p = 0.0225) and diabetes (p < 0.0001) experienced decreased retention of endodontically treated teeth and increased retreatment (p = 0.0109) by endodontists. Patients treated by general dentists experienced increased retention for female patients (p = 0.0066), immediate restoration of the treated tooth (p = 0.0212), and decreased retention with a history of hypertension (p = 0.0036) and diabetes (p = 0.0033). This study suggests that diabetes and/or hypertension, delayed or no restoration, and increasing age, may all contribute to decreased retention of endodontically treated teeth, but that immediate postendodontic restoration may enhance retention. In the early era, very few cases of molar endodontics were completed, and one could infer that there were greater numbers of posterior teeth extracted because of this fact. This demonstrates how a combination of providers can provide a broader range of clinical endodontic services, supporting an Indian Health Service goal of providing the highest level of oral health care possible.

The angle of the articular eminence in modern dentate African-Americans and European-Americans.

The purpose of this study was to determine if there were differences in the angle of eminentia of two 20th century populations based on race, age, gender, and number of teeth and whether there was asymmetry of the angles of eminentia. The sample included dry skulls from the Hamann-Todd Osteological collection as follows: 80 African-Americans (AA, 53 males and 27 females) and 62 European-Americans (EA, 49 males and 13 females), ranging in age from 16-77 years. The lateral, central, and medial aspects of the right and left slopes of the articular eminence were measured in a parasagittal plane. Independent t-tests, paired t-tests, and Pearson correlation coefficients were computed. For the AA population, the right central, lateral, and medial angles of eminentia were steeper than the corresponding left angles (paired t-test, p<0.05); for the AE males only the right lateral and medial angles were significantly steeper than the corresponding left angles (paired t-test, p<0.05). There were no significant relationships between age or number of teeth and the angle of eminentia measurements, nor were there differences in angle of eminentia by gender. There were two differences by race: the EA males had steeper left central and left medial angles than the AA males (independent t-test, p<0.05). The central angle of eminentia was consistently steeper than the medial angle (paired t-test, p<0.01), and the lateral was generally steeper than the medial.

Establishing, funding, and sustaining a university outreach program in oral health.

The Surgeon General's report of May 2000, Oral Health in America, suggests that there are two Americas in terms of oral health: those who have excellent oral health, and those who are unable to access care and have disparate amounts of dental disease. Since the majority of dental schools are located in urban settings, dental educators need to establish, fund, and sustain outreach programs while sensitizing students to the needs of the underserved. This paper describes the process that Case Western Reserve University School of Dental Medicine used to develop an outreach program to address the needs of underserved children in Cleveland, Ohio.

Early clinical experience for first-year dental students.

Over the past three years we have exposed our first-year dental students at Case Western Reserve University School of Dental Medicine to an early clinical experience. Following a seventy-two-hour didactic and laboratory course, first-year students spend over 100 hours treating school children in twenty-eight elementary and middle schools in the Cleveland Municipal School District. Not only do dental students learn a clinical procedure, but more importantly they experience the need for health care, in particular, dental care among those less fortunate than themselves. The experience strengthens their desire to help the under-served, their understanding of the problems many face in obtaining oral health care, and their commitment to addressing these issues. Themes from student reflection papers are summarized.