| 0464 Assessing Periodontal Disease Severity Using Partial Recording Protocols | ||
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A. KINGMAN1, C. SUSIN2, and J.M. ALBANDAR2, 1Natl Institute of Dental & Craniofacial Rsch - NIDCR, Bethesda, MD, USA, 2Temple University, Philadelphia, PA, USA We previously reported how much common partial recording protocols (PRP) underestimate prevalence of clinical attachment loss. Objectives: The aim of this study was to assess the effect of estimating clinical attachment loss (CAL) and pocket depth (PD) severity based on a PRP in epidemiological studies. Methods: Our study population included 14-103 year-old dentate persons (n=1437) who had at least 4 permanent teeth. At the population level bias and relative bias of PRP's involving combinations of tooth-site groups for random-half mouth and full-mouth assessments were derived using the traditional 6-sites per tooth full-mouth assessment. The mesiobuccal and midbuccal (MB-B), mesiobuccal, midbuccal and distobuccal (MB-B-DB), and mesiobuccal, midbuccal and distolingual (MB-B-DL) site combinations were investigated. Regression models were used to assess the association at the individual level. Results: Biases for full-mouth PRP's were slightly smaller than the associated half-mouth PRP. Half-mouth PRP biases varied between -0.08 and -0.01 mm and -0.17 and 0 mm for average attachment loss (CAL) and pocket depth (PD), respectively; relative biases varied between -5% to -0.4% for CAL, and -7.5% and -0.1% for PD. Intercept-slope regression model estimates were (0.06,1.00), (0.06,1.01) and (0.02,1.00) for the MB-B, MB-B-DB and MB-B-DL site combinations based on the random half-mouth assessments for CAL. Associated R-squares were 0.92,0.93,and 0.96, respectively. For PD the corresponding estimate-pairs were (0.22,0.98), (0.20,0.96) and (0.05,1.00), with R-squares 0.76,0.80,and 0.90, respectively. Systematic patterns were not detected among CAL or PD residuals by age, gender or smoking status. Conclusions: These findings suggest that MB-B, MB-B-DB or MB-B-DL random half-mouth means can provide excellent estimates of the traditional 6-site per tooth full-mouth mean CAL for use in epidemiological analyses. The corresponding PRP-based PD means were slightly inferior, but adequate. | ||
| Seq #68 - Prevalence of Oral Conditions / Dental Caries 2:00 PM-3:00 PM, Thursday, 9 March 2006 Dolphin Hotel Pacific Hall | ||
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