Document Type




Format of Original

8 p.

Publication Date



Dove Medical Press

Source Publication

Clinical, Cosmetic and Investigational Dentistry

Source ISSN


Original Item ID

doi: 10.2147/CCIDE.S49191; PubMed Central, PMCID: PMC3770522


Objective: To determine whether the rates of nontraumatic dental condition (NTDC)-related emergency department (ED) visits are higher during the typical working hours of dental offices and lower during night hours, as well as the associated factors.

Methods: We analyzed data from the National Hospital Ambulatory Medical Care Survey for 1997 through 2007 using multivariate binary and polytomous logistic regression adjusted for survey design to determine the effect of predictors on specified outcome variables.

Results: Overall, 4,726 observations representing 16.4 million NTDC-related ED visits were identified. Significant differences in rates of NTDC-related ED visits were observed with 40%–50% higher rates during non-working hours and 20% higher rates on weekends than the overall average rate of 170 visits per hour. Compared with 19–33 year olds, subjects [relative rate ratio (RRR) = 1.6 to 1.8], whereas those aged 73 and older had lower relative rates during nonworking hours (RRR = 0.4; overall P = 0.0005). Compared with those having private insurance, Medicaid and self-pay patients had significantly lower relative rates of NTDC visits during nonworking and night hours (RRR = 0.6 to 0.7, overall P < 0.0003). Patients with a dental reason for visit were overrepresented during the night hours (RRR = 1.3; overall P = 0.04).

Conclusion: NTDC-related visits to ED occurred at a higher rate during non-working hours and on weekends and were significantly associated with age, patient-stated reason for visit and payer type.


Published version. Clinical, Cosmetic and Investigational Dentistry, Vol. 2013, No. 5 (September 2013): 69-76. DOI. © 2013 Dove Medical Press.

This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution - Non Commercial (unported, v3.0) License.

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