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The purpose of this study is to determine if regular rinsing with chlorhexidine is effective as a long-term preventive method for reducing the incidence of tooth loss in low income older adults. The true end-point of the study is tooth loss after five years of regular rinsing with chlorhexidine or a placebo; surrogate endpoints are periodontal disease, root and coronal decay.
"TEETH" is a double-blinded, randomized clinical trial, supervised by a Data & Safety Monitoring Board, designed to provide unequivocal evidence regarding the impact of regular rinsing 0.12% chlorhexidine solution on tooth loss in low income, community-dwelling older adults who are irregular users of dental services. Of the 1101 subjects enrolled in the study in Seattle, WA and Vancouver, B.C., one/half have been assigned to the active rinse condition; the other half to the placebo rinse which looks and tastes like the chlorhexidine rinse but does not have the active ingredient. Subjects receive two bottles of rinse every six months; the first to be used daily for one month, the second weekly for five months. Reminder calls are designed to help subjects maintain this rinse regimen. Subjects return yearly to research clinics at each participating university, where they are examined by a dentist who is trained in clinical research methodology and calibrated annually. The purpose of these visits is to examine subjects for tooth loss (followed by contacts with extracting dentists to determine the dentist's reasons for extracting the tooth), pocket depth, recession, caries and restorations on root and coronal surfaces. Interviews are also conducted annually with participants to assess health status, health behaviors, and oral health quality of life. A panoramic radiograph was taken at baseline of each subject and is to be done again at the five-year (final) yearly exam. These radiographs are used to confirm tooth loss and possible reasons for extractions
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Prevention
University of Washington
Active, not recruiting
National Institute of Dental and Craniofacial Research (NIDCR)
Published on BioPortfolio: 2014-07-23T21:56:50-0400
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The pathologic wearing away of the tooth substance by brushing, bruxism, clenching, and other mechanical causes. It is differentiated from TOOTH ATTRITION in that this type of wearing away is the result of tooth-to-tooth contact, as in mastication, occurring only on the occlusal, incisal, and proximal surfaces. It differs also from TOOTH EROSION, the progressive loss of the hard substance of a tooth by chemical processes not involving bacterial action. (From Jablonski, Dictionary of Dentistry, 1992, p2)
The wearing away of a tooth as a result of tooth-to-tooth contact, as in mastication, occurring only on the occlusal, incisal, and proximal surfaces. It is chiefly associated with aging. It is differentiated from TOOTH ABRASION (the pathologic wearing away of the tooth substance by friction, as brushing, bruxism, clenching, and other mechanical causes) and from TOOTH EROSION (the loss of substance caused by chemical action without bacterial action). (Jablonski, Dictionary of Dentistry, 1992, p86)
A tooth's loss of minerals, such as calcium in hydroxyapatite from the tooth matrix, caused by acidic exposure. An example of the occurrence of demineralization is in the formation of dental caries.
Loss of the tooth substance by chemical or mechanical processes
Horizontal and, to a lesser degree, axial movement of a tooth in response to normal forces, as in occlusion. It refers also to the movability of a tooth resulting from loss of all or a portion of its attachment and supportive apparatus, as seen in periodontitis, occlusal trauma, and periodontosis. (From Jablonski, Dictionary of Dentistry, 1992, p507 & Boucher's Clinical Dental Terminology, 4th ed, p313)
Dentistry is the study, management and treatment of diseases and conditions affecting the mouth, jaw, teeth and their supporting tissues (Oxford Medical Dictionary) The work of a dentist ranges from regular patient check-up to orthodontics and surgery....
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