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Incidence rates for complete cusp fracture
J D Bader1, J A Martin, D A Shugars
1Department of Operative Dentistry, Sheps Center for Health Services Research, University of North Carolina, Chapel Hill, NC, USA. bader@unc.edu
Community Dentistry and Oral Epidemiology
|September 13, 2001
Summary
This study determined incidence rates for complete coronal cusp fractures, finding 89.0 per 1000 person-years for all fractures. These findings help define the magnitude of this dental problem for clinicians and patients.
Area of Science:
- Dental Science
- Epidemiology
- Restorative Dentistry
Background:
- Complete coronal cusp fracture is common but rarely studied for incidence.
- Understanding fracture rates is crucial for dental practice and patient education.
Purpose of the Study:
- To determine incidence rates of complete coronal cusp fracture.
- To analyze rates per person and per tooth type.
Main Methods:
- Fractures were recorded over 105 days in a dental health maintenance organization.
- Incidence rates were calculated per person and tooth type, distinguishing between all and non-carious fractures.
- Fracture location and severity in posterior teeth were examined.
Main Results:
- Per-person incidence rates were 89.0 (all fractures) and 72.7 (non-carious) per 1000 person-years.
- Posterior teeth had higher non-carious fracture rates (69.9) than anterior teeth (10.2).
- Fracture patterns varied by tooth type and cusp, with most exposing dentin but rarely the pulp.
Conclusions:
- This study provides the first incidence rates for complete coronal cusp fractures based on enumerated persons and teeth at risk.
- The findings quantify the problem's magnitude for dentists and patients.
- This data aids in understanding and managing coronal cusp fractures.