Trends in service provision among Australian private general dental practitioners over a 20-year period

AIM: To-investigate time trends in service provision. DESIGN: Five cross-sectional surveys across a 20-year period. SETTING: Australian private general practice PARTICIPANTS: A random sample of dentists. METHODS: Mailed questionnaires were collected in 1983, 1988, 1993, 1998 and 2003 (response rates 71%-76%). MAIN OUTCOME MEASURES: Services per visit, annual services per dentist; annual services per patient. RESULTS: Total services per visit increased over the study period from 1.78 to 2.37 (Poisson regression; P<0.05). However the annual number of services provided per dentist did not vary significantly, reflecting a trend among dentists to supply fewer patient visits per year. The annual number of services provided per patient increased from 3.47 to 5.50 (OLS regression; P<0.05), reflecting both increased service rates per visit and increased numbers of visits by patients. Dentists provided less restorative, prosthodontic and extraction services per year, but more diagnostic, preventive, endodontic and crown and bridge services. The annual care received per patient also included more diagnostic, preventive, endodontic and crown and bridge services but differed from the dentist pattern through increased rates of restorative services over the study period. CONCLUSIONS: The content of dentist workloads has changed to include less emphasis on removal and replacement of teeth and more effort on diagnosis and prevention aimed at retention of natural dentitions.     

Restorative service trends in private general practice in Australia: 1983-1999

Objectives. Restorative services are a major component of the annual workload of a dentist, but are undergoing a period of change as population oral health continues to improve and restorative materials and techniques are developed. The aim of this study was to examine trends in the provision of restorative services over a 15-year period spanning 1983-84 to 1998-99.Methods. A series of cross-sectional surveys was performed in 1983-84, 1988-89, 1993-94 and 1998-99 with response rates of over 70%. Data were collected by a mailed survey from a random sample of dentists from each state/territory in Australia. Dentists provided data on patients treated on a typical clinical day from which annual rates of provision of services per dentist were derived for restorative and related services.Results. The overall number of annual restorative services provided per dentist declined over the four points of the study period. This trend reflected a steady decline in the annual number of amalgams provided per dentist. However, composite resins increased between 1993-94 and 1998-99, while glass ionomers, other-restorative services, crowns and fissure sealants all showed increases over the first three points of the study period.Conclusions. Over the study period the highest provision of restorative and related services changed from amalgams to composite resins, reflecting trends towards improved oral health and development of restorative materials. The decline in restorative services was not uniform across all age groups of patients, with increases observed among 45-64 and 65+ year olds, reflecting increased retention of teeth among adults.     

Practice activity trends among Australian private general dental practitioners: 1983-84 to 1998-99

AIM: To investigate time trends in practice activity. DESIGN: Four cross-sectional surveys across a 15 year period. SETTING: Australian private general practice. PARTICIPANTS: A random sample of dentists. METHODS: Dentists were surveyed by mailed questionnaire in 1983, 1988, 1993 and 1998 (response rates 71%-75%). Data were weighted to provide representative estimates for the age by sex distribution of private general practitioners in 1983, 1988, 1993 and 1998. MAIN OUTCOME MEASURES: Hours per year worked, patient visits per hour and patient visits per year. RESULTS: The number of patient visits per year declined across the period, related to parallel decreases in the number of patient visits per hour (ANOVA; P<0.05), while there was no significant difference during the period in the number of hours per year devoted to work. The interaction of dentist sex by time of survey indicated that while numbers of patient visits per year had remained stable for female dentists, there was a trend for the higher number of patient visits per year among male dentists at the beginning of the survey period to decline over time. CONCLUSIONS: Male dentists had higher levels of practice activity compared with female dentists, but a decline in the number of patient visits per year reflected a convergence of male practice patterns towards that of female dentists.     

Service provision trends between 1983–84 and 1993–94 in Australian private general practice

Patterns of service provision are expected to change over time, reflecting the dynamics of factors such as oral health status and trends in population demographics. The aim of this study was to identify trends in service provision over time. Data were collected from a random sample of Australian dentists in 1983–84, 1988–89, and 1993–94. Changes observed between 1983–84 and 1993–94 included a trend towards increased proportions of patients in older age groups, restorative care (from 40.2 per cent to 37.7 per cent) and prosthodontic care (9.3 per cent to 8.0 per cent) and increases in diagnostic (from 38.7 per cent to 46.0 per cent), preventive (20.9 per cent to 7.1 per cent), and crown and bridge services (3.1 per cent to 4.7 per cent) per visit. Other services such as orthodontic and general/miscellaneous services showed increases over the first half of the study period, but these did not continue between 1988–89 and 1993–94. The total number of services per visit increased over the study period for adult patients. These findings indicate changing patterns of practice over time, consistent with an increasing orientation towards prevention of disease and maintenance of a natural dentition.     

Service provision trends between 1983–84 and 1993–94 in Australian private general practice

Patterns of service provision are expected to change over time, reflecting the dynamics of factors such as oral health status and trends in population demographics. The aim of this study was to identify trends in service provision over time. Data were collected from a random sample of Australian dentists in 1983–84, 1988–89, and 1993–94. Changes observed between 1983–84 and 1993–94 included a trend towards increased proportions of patients in older age groups, restorative care (from 40.2 per cent to 37.7 per cent) and prosthodontic care (9.3 per cent to 8.0 per cent) and increases in diagnostic (from 38.7 per cent to 46.0 per cent), preventive (20.9 per cent to 7.1 per cent), and crown and bridge services (3.1 per cent to 4.7 per cent) per visit. Other services such as orthodontic and general/miscellaneous services showed increases over the first half of the study period, but these did not continue between 1988–89 and 1993–94. The total number of services per visit increased over the study period for adult patients. These findings indicate changing patterns of practice over time, consistent with an increasing orientation towards prevention of disease and maintenance of a natural dentition.     

Service patterns associated with coronal caries in private general dental practice

OBJECTIVES: To describe the pattern of dental services associated with dental caries by level of carious lesion severity. METHODS: Data were collected by a mailed survey from a random sample of dentists from each State/Territory in Australia in 2003-2004. Dentists provided service data on patients treated on a typical clinical day for patients attending with a diagnosis of dental caries. RESULTS: Restorative rates were higher for insured patients, radiograph rates were higher for emergency visits, prophylaxis and topical fluoride rates were higher for non-emergency visits and at capital city locations with topical fluoride also higher for patients from higher socio-economic status areas, endodontic rates were higher for emergency visits and at non-capital city locations, while extraction rates were higher for males, uninsured patients and for emergency visits. Poisson regression models compared the rates of services from different service areas for initial and cavitated carious lesions with gross carious lesions, controlling for patient demographics, visit type, location and socio-economic status. Restorative services were provided at higher rates (P<0.05) for cavitated carious lesions (RR=2.38), radiographs were provided at lower rates for both initial (RR=0.28) and cavitated carious lesions (RR=0.31), both prophylaxis and topical fluoride services were provided at higher rates for initial carious lesions (RR=2.33 and 3.00, respectively), endodontic services were provided at lower rates for both initial (RR=0.03) and cavitated carious lesions (RR=0.07), and extractions were provided at lower rates for both initial (RR=0.23) and cavitated carious lesions (RR=0.16) compared to the reference category of gross caries. CONCLUSION: Service patterns varied by level of carious lesion severity with initial carious lesions managed by more preventive services, cavitated carious lesions with more restorative services, gross carious lesions with more radiographic, endodontic and extraction services. However, initial carious lesions tend to be managed with restorative rather than preventive service, suggesting scope for increased management by minimum intervention approaches.     

Service-mix provided to patients in Australian private practice

Service-mix can reflect changes in demographic factors, oral health, patient demand and treatment philosophies. The aim of this study was to compare service-mix by patient age in 1988 with baseline data from 1983. A weighted, stratified random sample of dentists in Australia was surveyed by mailed questionnaire in 1983 and again in 1988. Service-mix was dominated by restorative, diagnostic and preventive areas. Comparing 1988 with 1983, there were significant increases for diagnostic, preventive, advanced restorative, orthodontic and general areas. Patterns across patient age groups and between years indicated younger patients were being provided with increased preventive services (patients aged 5–11, 25–44 years) and decreased restorative services (patients aged 5–11, 12–17 years), while older patients were being provided with reduced prosthodontic services (patients aged 25–44, 45–64 years), but increased restorative services (patients aged 45–64, 65+ years) and advanced restorative services (patients aged 25–44, 45–64 years).These patterns of service-mix have implications for dental education, research and service delivery.     

The role of dentist, practice and patient factors in the provision of dental services

OBJECTIVES: Service provision varies by dentist, practice and patient factors. However, limited subsets of these potential influences on service rates have been explored. More comprehensive models could improve our understanding of the factors influencing the pattern of care delivered. The aim of this study was to examine variation in dental services by dentist (treatment choice, practice beliefs, preferences for patients, demographics), practice (type, location, size and volume of practice) and patient (visit, demographic, oral health and socio-economic) characteristics. METHODS: A random sample of Australian dentists was surveyed in 1997-98 (response rate=60.3%). Private general practitioners (n=345) provided dentist and practice data, and service provision and patient variables were collected from a log of a typical clinical day (n=4,115 patients). Multivariate negative binomial regression models were fitted for diagnostic, preventive, restorative, extraction and prosthodontic services. RESULTS: Significant dentist factors included (P<0.05; RR=rate ratio): lower diagnostic rates (RR=0.78) for dentists with stronger practice beliefs for giving information about cost and treatment options; preventive rates were lower (RR=0.74) for male dentists and higher (RR=1.48) for younger dentists aged 20-29 years; restorative rates were higher (RR=1.27) for dentists that rated patient preferences more highly in treatment choice and in the dentist age group 30-39 years (RR=1.25); extraction rates were lower (RR=0.61) for dentists with stronger preferences for patients that would adhere with treatment but higher (RR=1.57) for dentists with stronger preferences for sociable patients; and prosthodontic rates were lower (RR=0.38) for dentists with stronger preferences for adaptable patients who were willing to cooperate when expected to do so. Practice factors included: higher preventive (RR=1.28) and prosthodontic rates (RR=2.07) in solo practice; higher preventive (RR=1.34) but lower prosthodontic rates (RR=0.42) in capital cities; lower diagnostic (RR=0.82) and extraction rates (RR=0.55) in practices with fewer other dentists; higher diagnostic (RR=1.33) and extraction (RR=1.62) rates but lower restorative rates (RR=0.84) in practices with lower patient visits per year. Patient factors included: lower preventive (RR=0.76) but higher extraction rates (RR=1.45) for emergency visits; lower extraction rates (RR=0.60) for the insured; higher diagnostic rates (RR=1.17) for new patients; higher restorative (RR=1.31) but lower prosthodontic rates (RR=0.46) for patients with decayed teeth; higher prosthodontic rates (RR=2.14) for those with dentures; and lower preventive (RR=0.66), but higher extraction (RR=2.22) and prosthodontic rates (RR=1.82) for patients from lower socio-economic status areas. CONCLUSIONS: Dental service rates were influenced by large number of small effects from a wide range of dentist, practice and patient factors. Socio-economic and geographic barriers may need broad policy innovations to be addressed, but factors such as insurance and visit type have the potential to be altered to achieve better service outcomes and there is scope for research into clinical outcomes to improve the knowledge upon which treatment decisions are based.     

Do regular dental visits affect the oral health care provided to people with HIV?

BACKGROUND: Financial factors related to income and insurance coverage have been found to limit access to, and influence use of, oral health care services by people with human immunodeficiency virus, or HIV. METHODS: The authors determined if visiting a dentist regularly affected the oral health services provided to people with HIV when financial barriers were eliminated as an impediment to access. They analyzed dental claims data for services submitted for payment to the Minnesota Access to Dental Care Program. The analyses focused on comparisons of dental utilization patterns among 273 people classified as regular patients, or RPs, and 222 people classified as nonregular patients, or NRPs. RESULTS: RPs were found to have been provided more diagnostic and preventive care, and less restorative, endodontic, periodontic, removable prosthodontic and oral surgical treatment than were NRPs. Although the mean submitted cost per patient visit was much higher for NRPs, total mean submitted costs per patient for RPs and NRPs were not significantly different. Even though NRPs underwent fewer procedures and had fewer clinic visits than did RPs, the procedures provided to NRPs were more complex and costly. As indicated by differences in the mix of dental care services provided to RPs vs. NRPs, continuity of primary oral health care for RPs led to a better oral health result at no increase in cost over that for NRPs. CONCLUSIONS: The study findings provide substantial evidence regarding the value of regular oral health care for people with HIV. CLINICAL IMPLICATIONS: This study reinforces the need for dentists to educate and encourage people with HIV to integrate regular oral health care into the ongoing maintenance of their overall health and well-being.     

Diagnostic and preventive service trends in private general practice: 1983-1984 to 1998-1999

BACKGROUND: Aggregate trends have indicated increases in the provision of diagnostic and preventive services but there have been few reports based on their component sub-categories. The aims of this study were to investigate time trends in the provision of sub-categories of diagnostic an preventive services across a 15-year period. METHODS: A random sample of Australian dentists was surveyed by mailed questionnaire in 1983-1984, 1988-1989, 1993-1994 and 1998-1999 (response rates 71-75 per cent). Data were weighted to provide representative estimates for the age by sex distribution of private general practitioners in 1983, 1988, 1993 and 1998. RESULTS: Rates per visit were higher, Poisson regression, P<0.05, in 1998-1999 compared to baseline for examinations, radiographs, prophylaxis and topical fluoride. Diagnostic and preventive service rates varied by age of patient: compared to patients aged 65+ years, examinations were higher among children aged <5 years to adults aged 25-44 years, radiographs were lower among children <5 years and 5-11 years but higher among adults aged from 18-24 years to 45-64 years, prophylaxis services were lower among children <5 years but higher among adolescents 12-17 years to adults aged 45-64 years, while topical fluoride was higher among children 5-11 years and adolescents 12-17 years. CONCLUSIONS: Examination, radiograph, prophylaxis, and topical fluoride rates increased over the study period. While examination rates increased for both children and adults, and prophylaxis rates increased for adolescents and adults, rates for radiographs and topical fluoride only increased for adults. Age-specific changes in service rates over time indicate the effect of changing oral health status and population demographics on service provision.     

Practical Belief Scales Among Private General Dental Practitioners

BACKGROUND: Practice beliefs have been related to service rate variation. The aims of this study were to replicate practice belief scales in Australia and investigate associations with dentist and practice characteristics and services. METHODS: A random sample of Australian dentists completed mailed questionnaires (response rate 60.3 per cent). RESULTS: Private general practitioners (n = 345) provided service data from a typical day. Eight practice belief items were recorded on a five-point Likert scale, yielding four factor-based scales. Approximately 85 per cent of responses were on the agreement side of the midpoint for the scales of Information giving and Patient influence, 45 per cent for Preventive orientation and approximately 10 per cent for Controlling active disease rather than developing better preventive advice. Capital city dentists had higher agreement with the Preventive orientation scale, while males and older dentists showed less disagreement with the Controlling active disease item (Mann-Whitney, Kruskal-Wallis P < 0.05). Those agreeing with the scales (that is scores < or = the median) showed (Poisson regression P < 0.05): a higher rate of crown and bridge, a rate ratio (RR) of 1.31, but lower rates of extraction (RR = 0.76) and prosthodontic services (RR = 0.64) for the Information giving scale; a higher rate of restorative (RR = 1.22) and total services per visit (RR = 1.06) for the Preventive orientation scale; a higher rate of preventive services (RR = 1.14), but a lower rate of crown and bridge services (0.78) for the Patient influence scale; and higher rates of crown and bridge (RR = 1.40) and prosthodontic (RR = 1.59) but lower rates of periodontic (RR = 0.60) and extraction services (RR = 0.62) for the Controlling active disease item. CONCLUSIONS: These findings confirm the factor structure of practice beliefs and demonstrate small to moderate associations with variation in service rates.     

Insurance status and provision of dental services in Australian private general practice

Abstract Annual expenditure on dental care in Australia amounts to ADD 1.9 billion. Approximately one-third of this expenditure involves private dental insurance, yet little is known about the impact of insurance on the provision of services. The aim of this analysis was to examine differences in dental service provision between insured and non-insured patients. Data collected from a random sample of dentists from a survey conducted in 1993-94 were used, providing 817 responses (response rate 74%). Logistic regression analysis controlling for patient age and sex and reason for visit indicated that in private general practice insured patients were more likely to receive preventive (OR=1.37), crown and bridge (OR = 2.25), and endodontic services (OR=1.27), but less likely to receive extraction services (OR=0.52). However, no significant differences by insurance status were found for diagnostic, restorative, or prosthodontic services in the multivariate models. These differences in service provision by insurance status indicate a more favourable pattern of services for insured patients, and point to equity issues in the provision of services.     

The provision of orthodontic services by general dental practitioners. 1. Methods and descriptive results

Information regarding orthodontic service provision by general dental practitioners in Australia is limited. The aim of this survey was to determine the amount and variety of orthodontic services provided by general dental practitioners in the Melbourne Statistical Division, Victoria, Australia. A random sample of 307 dentists drawn from the Victorian Dentists Register was surveyed by mailed questionnaire: 218 (71%) replied. Data were collected using a fortnight log. During this time 59 per cent of the dentists saw at least one orthodontic patient; one dentist saw 66 orthodontic patients. Removable orthodontic appliances were used by 35 per cent of the dentists and fixed orthodontic appliances by 18 per cent. Twenty-six per cent provided comprehensive orthodontic treatment, 22 per cent aligned incisors, and 21 per cent corrected anterior cross-bites. The general dental practitioners surveyed provided a wide range of preventive and interceptive orthodontic services to generally a small percentage of their patients.     

Impact of older adults on private dental practices, 1988-1998

BACKGROUND: A 1988 study indicated that older adults made up a substantial portion of regular patients seen in private dental practices. A follow-up study was conducted in 1998 to track changes over the decade in the participating practices. METHODS: The authors collected data from respondents to the 1988 survey again in 1998. The authors received complete data from 41.7 percent of the original respondents who still were practicing at their 1988 addresses. Dentists kept a log of all procedures provided in their practices in one day. The authors attributed values of services in both years, using a 1997 national estimate of fees. RESULTS: The authors found that the percentage of office visits, services provided and patient expenditures attributed to patients 65 years of age or older exceeded the percentage of the population in that age group. In four of the five age groups in which patients had the highest mean expenditures, patients were 60 years of age or older. Patients 60 years of age or older accounted for 28.8 percent of all patient expenditures, a 12.1 percent increase from 1988. Longitudinal analyses indicated that between 1988 and 1998, dentists 40 years of age or older experienced increases of 30.3 to 64.3 percent in the proportion of visits, services and expenditures by patients 65 years of age or older. CONCLUSIONS: The results of this investigation illustrate the importance of older adults to dental practices. Data from the practices of dentists who participated in both surveys show increases in the percentage of total dental visits, total services provided and total patient expenditures attributed to older adults. CLINICAL IMPLICATIONS: Older adults continue to have a disproportionate and positive impact on the surveyed dental practices and their financial well-being. Dentists should reevaluate the accessibility of their practices to this population. Rather than waiting for the practice to "age," dentists may want to structure their practices in ways that appeal directly to older adults and work to even better understand the needs and preferences of older patients already in their practices.     

Dentist service rates and distribution of practice styles over time

Abstract Studies of dentist service rates have identified clusters of dentists with particular styles of practice, but these practice styles need to be investigated to determine whether patterns of care become established and remain characteristic among dentists. The aims of this study were to establish dentist practice styles and to assess the distribution of these styles of practice between 1983 and 1988. A total of 202 private general practitioners who provided service rate data in both 1983 and 1988 were used in a cluster analysis to group dentists into practice styles. For both 1983 and 1988 three clusters of dentists were obtained, characterized by-service rates as “High Restorative”, “Low Total Rates”, and “High Diagnostic and Preventive”. However, the distribution of cluster membership changed over time. The percentage of dentists in the “High Restorative” cluster decreased from 27.9%, in 1983 to 16.6% in 1988. the “Low Total Rates” cluster decreased from 60.7%, in 1983 to 49.2% in 1988, while the “High Diagnostic and Preventive” cluster increased from 11.4% in 1983 to 34.2% in 1988. The distribution of dentists between those practice styles may be related to ageing of dentists, practice maturation, population demographics, need or demand changes, or involve subtle differences in cluster classification over time.     

Private dental visits per dentist in Spain from 1987 to 1997. An analysis from the Spanish national Health Interview Surveys

OBJECTIVES: In view of the sharp increase in the number of dentists in Spain, the aim of the present study was to analyse changes in the private dentist workload in Spain over the period 1987-97. METHODS: Data were taken from censuses of the population and of dental practitioners, and from the Spanish National Health Interview Surveys. The percentage of people that had visited the dentist in the 3 months prior to the survey was calculated, and of these, the percentage whose last visit was private. The total number of visits made by those people was taken as the estimate of total private visits in Spain during 3 months. Total private activity in 1 year was derived by multiplying this estimate by four. Annual private activity was then divided by the number of dentists. RESULTS: From 1987 to 1997, the Spanish population grew 2.5% (from 38.7 to 39.7 million) and the number of dentists increased by 136.1% (from 6373 to 15,044). The total annual number of private dental visits (+/-SE) was 35.7 +/- 1.0 million in 1987, and 48.9 +/- 2.0 million in 1997 - a 36.8% increase. Thus, the mean number of private dental visits per dentist decreased 42.0% (from 5610 +/- 152 to 3251 +/- 133). CONCLUSION: A significant reduction in private dental visits per dentist is taking place in Spain.     

Estimating determinants of dentist productivity: new evidence

Objective: Productivity (output per unit of input) is a major driver of dental service capacity. This study uses 2006‐2007 data to update available knowledge on dentist productivity. Methods: In 2006‐2007, the authors surveyed 1,604 Oregon general dentists regarding hours worked, practice size, payment and patient mix, prices, dentist visits, and dentist characteristics. Effects of practice inputs and other independent variables on productivity were estimated by multiple regression and path analysis. Results: The survey response rate was 55.2 percent. Dentists responding to the productivity‐related questions were similar to dentists in the overall sampling frame and nationwide. Visits per week are significantly positively related to dentist hours worked, number of assistants, hygienists, and number of operatories. Dentist ownership status, years of experience, and percentage of Medicaid patients are significantly positively related to practice output. The contributions of dentist chairside time and assistants to additional output are smaller for owners, but the number of additional dentist visits enabled by more hygienists is larger for owners. Conclusion: As in earlier studies of dental productivity, the key determinant of dentist output is the dentist's own chairside time. The incremental contributions of dentist time, auxiliaries, and operatories to production of dentist visits have not changed substantially over the past three decades. Future studies should focus on ultimate measures of output – oral health – and should develop more precise measures of the practice's actual utilization of auxiliaries and their skill and use of technology.     

A comparison of two mobile treatment programs for the homebound and nursing home patient

Two mobile treatment programs using portable equipment transported in vans to serve homebound persons in Denver and Chicago are compared for types of patients treated, use by local dentists, types of services provided, fees generated, and costs involved in operation during the 2-year period (1985–86). Both programs treated a similar, largely nursing home-based white female population that was predominantly older. Volunteer dentist participation varied greatly, with more than twice the number of dentists using the service in Chicago. Both programs accomplished essentially the same number of visits for the biennium studied, with 1,324 for Chicago and 1,320 for Denver. The Denver program was more efficient, generating more visits each time a dentist used the program. The services provided in total were about the same for both programs, with Denver generating 4,887 procedures and Chicago 4,602 for the biennium, but Denver had a more favorable ratio of diagnostic to treatment services. The costs of both programs were close, averaging about $60,000 per year. Denver was able to generate far more in equivalent fees than Chicago for the biennium, but Chicago dentists donated a greater percentage of services (67) than did Denver dentists (62).     

Secular trends in dental services provided by dental therapists and dentists in Southwest Alaska

BackgroundThe goal of the study was to identify secular trends in dental service delivery between dental therapists and dentists in the Yukon-Kuskokwim Delta region of Southwest Alaska, the first area of the United States to authorize dental therapy practice.MethodsElectronic health record transactions from the Yukon-Kuskokwim Health Corporation from 2006 through 2015 (n = 27,459) were analyzed. Five types of dental services were identified using Current Dental Terminology procedure codes: diagnostic, preventive, restorative, endodontic, and oral surgery. Main outcomes were percentages of services provided by dental therapists compared with dentists and population-level preventive oral health care.ResultsThe overall number of diagnostic, preventive, and restorative services in the Yukon-Kuskokwim Delta increased. For diagnostic services, there was a 3.5% annual decrease observed for dentists and a 4.1% annual increase for dental therapists (P < .001). Similar trends were observed for restorative services. For preventive services, there was no change for dentists (P = .89) and a 4.8% annual increase for dental therapists (P < .001). Dental therapists were more likely than dentists to provide preventive care at the population level.ConclusionsDental therapists have made substantial contributions to the delivery of dental services in Alaska Native communities, particularly for population-based preventive care.Practical ImplicationsThe study’s findings indicate that there is a role for dental therapy practice in addressing poor access to oral health care in underserved communities.     

Restorative service patterns in Australia: amalgam, composite resin and glass ionomer restorations

AIM: To examine the provision of amalgam, composite resin and glass ionomer restorations, and to assess whether these main restorative services varied by patient, visit and oral health characteristics. DESIGN: A cross-sectional survey incorporating a log of service items provided on a typical day. SETTING: Australian private general practice. METHODS: Data on services and patients were collected by a mailed survey from a random sample of dentists from each State/Territory in Australia in 1998-99 with a response rate of 71%. MAIN OUTCOME MEASURES: Rates per visit of amalgam, composite resin and glass ionomer restorations among dentate adults who had received a restoration. RESULTS: Analysis showed older patients had lower amalgam rates but higher glass ionomer rates, composite resin rates were lower at emergency visits, capital city patients had higher amalgam rates but lower composite resin rates, patients with decayed teeth had higher amalgam and composite resin rates, and use of restorative materials varied by clinical problem. CONCLUSIONS: Despite widespread use of alternative materials, amalgam rates remained high in circumstances such as replacement restorations and restorations involving more than one surface. Other restorative materials also had specific applications. Both amalgam and composite resins were provided at higher rates to patients with active caries but composite resins were also used at higher rates for aesthetic problems. Glass ionomer restorations were used at higher rates for initial and one-surface restorations, and for conditions such as root caries and dentinal sensitivity.