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determination of untreated decay. A 50-item questionnaire included demographics and OH-related behaviors such as oral hygiene practices and dental care utilization. Chi-squared, one-way ANOVA, and logistic or multivariable regression analyses were conducted to examine the relationship between sociodemographic and behavioral factors with OH status during pregnancy. Results: Hispanic ethnicity, lower household income, public dental insurance, and lacking a dental visit in the past year were significantly associated with poorer outcomes for all 3 OH variables (untreated decay, probing depths, and gingival bleeding) in the bivariate analyses. After controlling for other variables, insurance status, education, and dental visit were significantly associated with untreated decay while only lack of dental visit was significantly associated with higher probing depth (pG that replaces Pro with Arg, which would alter the protein structure and its function, as demonstrated by protein structure modelings. Conclusion: When patients present with inherited tooth defects, the dentist’s role is to describe the phenotypes and obtain a family pedigree of the inheritance pattern. Additionally, collecting a patient’s saliva is a simple, painless procedure, which can be used for DNA purification, mutational analysis, and diagnosis of inherited tooth defects such as AI Support: UCSF Start-up fund to T.L. and R03 DE019682 to T.L. #52 Title: Alternative practice dental hygiene in California: past, present, and future E MERTZ (1), P GLASSMAN (2) (1) UCSF Department of Preventive and Restorative Dental Sciences, (2) University of the Pacific Objectives: To improve access to care, policymakers and dental professions often consider workforce redesign and innovation as a primary strategy to reduce disparities in utilization and oral health outcomes. This study examines one such redesign through the development of Registered Dental Hygienists in Alternative Practice (RDHAP) in California. Methods: This comprehensive case study was developed using mixed methods. Archival documents and dental and dental hygiene association literature inform the historical analysis. This new model of care is documented in two surveys of the dental hygiene workforce conducted in 2005 and in 2009 at UCSF. A qualitative study of RDHAPs and related stakeholders was also conducted by the authors in 2007. These data represent a comprehensive set of perspectives on the alternative practice hygienist. Results: Development of this practice model took 23 years and resulted from a highly politicized and contentious legislative process. RDHAPs are motivated to autonomously serve underserved patients and communities. Their patients are more likely to be very young, medically compromised, or developmentally disabled than patients of traditional dental hygienists. RDHAPs work in high need settings including residential care facilities (63.6%), homebound settings (61.0%), and nursing homes (58.5%). Almost all provide direct patient care (95.1%). Many provide case management (64.1%) and engage in public health activities (36.98%). Challenges within their practice include: ergonomics, the referrals process, and payers who don’t recognize them at billable providers. Conclusions: The alternative practice of dental hygiene in California is an important innovation in improving access to preventative dental care services, case management, and referral for a wide range of underserved populations in California. This was made possible by legal scope of practice changes; however the model’s success requires further dental delivery system and organizational changes. Support: Funding provided by National Institute of Dental & Craniofacial Research Awards # P30DE020752 & #U54DE019285. School of Dentistry Research and Clinical Excellence Day 2011 Program 23
IV. RESEARCH ASSOCIATES #53 Title: Effect of human saliva contamination on the bond strength of different glass ionomer cements to human dentin M GOEL, L PINZON, M LOW, D TANG UCSF Department of Preventive and Restorative Dental Sciences Introduction: The purpose of this study was to evaluate the effect of human saliva contamination on the bond strength of conventional and resin modified glass ionomer cements [Fuji IX (GC), Ketac molar quick (3M ESPE), Tokuso (Tokoyama), Ketac Nano (3M ESPE), Photac Fil Quick (3M ESPE), and GC Fuji CEM (GC)] contaminated under different conditions of decontaminating the interface (Control group: Apply GIC following manufactures’ instructions, 10ul of Saliva + apply conditioner + rinse +GIC, Apply conditioner + 10ul of saliva + air dry + GIC, and Apply conditioner + 10ul of saliva + rinse + air dry + GIC) Methods: Human third molars were sectioned sagittally in a bucco-lingual direction in the proximal location and polished with 320grit SiC discs. Composite stubs (5mm height/19.6 mm2 area) [P60 (3M ESPE)] were air abraded with Al2O3 particles, ultrasonically cleaned, and bonded to the dentin specimens with the cements according to the manufacturers&rs quo; instructions. Specimens were stored in water at 37°C for 24 hours and were de-bonded under shear load with a universal testing machine (Instron/1122) at a cross-head speed of 5 mm/min. Failure modes were determined using 100X magnification Data was analyzed using ANOVA with Fisher’s PLSD intervals (p
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Page 6 and 7: excess sugar, poor oral hygiene) or
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