This study is a collaborative effort between the University of Washington (UW), the coordinating center, and the University of British Columbia (UBC). The main purpose of this five-year, randomized, clinical trial is to test the efficacy of a chlorhexidine and fluoride rinse intervention to reduce tooth-mortality in an elderly population with past oral disease and a poor history of regular dental care. The sample will consist of 900 community dwelling adults, 600 from Seattle and 300 from Vancouver, ages 60-75 at baseline, who have between four and 24 teeth, have not had a dental visit in the last two years, and a score of at least 60 (of 100) on an oral-self-efficacy scale. At each site, participants will be randomized into two groups. In the treatment group, subjects will use fluoride rinse every morning, chlorhexidine every evening for one month followed by weekly chlorhexidine use for five months. The cycle will be repeated every six months for a total of five years. The control group will be given placebo solutions for the fluoride and chlorhexidine products for morning and evening rinsing. The final endpoint is tooth loss determined by clinical exam, comparison of initial and final panoramic radiographs, and information collected from the participants"""""""" own dentists of record. Project dentists will not be performing the extractions or dental treatment. Panoramic radiographs, cleanings and scalings will be provided at baseline, and esthetic cleanings in subsequent years. Yearly exams and interviews will be conducted. A secondary aim is to assess the validity of surrogate endpoints (probing pocket depth, loss of attachment, root and coronal caries) compared to tooth loss. An ancillary objective is to determine the impact of ethnicity, intervention site, self-efficacy, and dentist variability on treatment outcomes.

National Institute of Health (NIH)
National Institute of Dental & Craniofacial Research (NIDCR)
Research Project (R01)
Project #
Application #
Study Section
Special Emphasis Panel (ZDE1-GH (45))
Project Start
Project End
Budget Start
Budget End
Support Year
Fiscal Year
Total Cost
Indirect Cost
University of Washington
Other Health Professions
Schools of Medicine
United States
Zip Code
Gonda, Tomoya; MacEntee, Michael I; Kiyak, H Asuman et al. (2013) Predictors of multiple tooth loss among socioculturally diverse elderly subjects. Int J Prosthodont 26:127-34
Swoboda, Jessica R; Kiyak, H Asuman; Darveau, Richard et al. (2008) Correlates of periodontal decline and biologic markers in older adults. J Periodontol 79:1920-6
Persson, G Rutger; Yeates, Justin; Persson, Rigmor E et al. (2007) The impact of a low-frequency chlorhexidine rinsing schedule on the subgingival microbiota (the TEETH clinical trial). J Periodontol 78:1751-8
Swoboda, Jessica; Kiyak, H Asuman; Persson, Rigmor E et al. (2006) Predictors of oral health quality of life in older adults. Spec Care Dentist 26:137-44
Vitaliano, Peter P; Persson, Rutger; Kiyak, Asuman et al. (2005) Caregiving and gingival symptom reports: psychophysiologic mediators. Psychosom Med 67:930-8
Persson, Rigmor E; Kiyak, Asuman H; Wyatt, Chris C I et al. (2005) Smoking, a weak predictor of periodontitis in older adults. J Clin Periodontol 32:512-7
Persson, G Rutger; Persson, Rigmor E; Hollender, Lars G et al. (2004) The impact of ethnicity, gender, and marital status on periodontal and systemic health of older subjects in the Trials to Enhance Elders' Teeth and Oral Health (TEETH). J Periodontol 75:817-23
Hujoel, Philippe P (2004) Endpoints in periodontal trials: the need for an evidence-based research approach. Periodontol 2000 36:196-204
Persson, G R; Persson, R E; MacEntee, C I et al. (2003) Periodontitis and perceived risk for periodontitis in elders with evidence of depression. J Clin Periodontol 30:691-6
Persson, R E; Hollender, L G; MacEntee, M I et al. (2003) Assessment of periodontal conditions and systemic disease in older subjects. J Clin Periodontol 30:207-13

Showing the most recent 10 out of 13 publications