A comparison of patients attending general dental practices employing or not employing dental hygienists

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Previous studies have shown that dental practices employing dental hygienists provide a more periodontally oriented mix of dental services. Little is known about differences in the characteristics of patients who attend these practices, and whether these reflect the orientation of service delivery. In this study, a comparison was made between patients attending private general dental practices employing hygienists and patients attending practices without hygienists in Adelaide, South Australia. A questionnaire was mailed to 2391 patients, and valid responses were received from 632 patients attending 12 practices employing hygienists, and 1052 patients attending 22 practices not employing hygienists. Bivariate analysis of the responses comparing the two groups of patients was conducted using ANOVA for continuous variables and chi-square statistics for categorical variables. A multiple logistic regression model was developed to identify characteristics of patients attending practices with hygienists. Examination of significant (p < 0.05) findings revealed that patients attending practices with hygienists had a higher socio-economic status, had a more preventive pattern of use of services, had better knowledge of periodontally related topics and it was more likely that the dental profession was their main source of information of these topics. These findings indicate that patient profiles do reflect the orientation of service delivery within dental practices and raise the question of whether the dental practice alters the patient's knowledge and behaviour or whether certain patients selectively seek care from practices with hygienists.