The Growth of Hydroxyapatite from Solution. A New Constant Composition MethodSAGE Publications - Tập 58 Số 4 - Trang 1431-1432 - 1979
Zahid Amjad, Petros G. Koutsoukos, Mason B. Tomson, George H. Nancollas
A new constant solution composition method is described for the study of calcium phosphate mineralization. It enables large quantities of stoichiometric hydroxyapatite to be formed by direct precipitation from solution at 37°C and pH = 7.40.
Association between Marginal Bone Loss around Osseointegrated Mandibular Implants and Smoking Habits: A 10-year Follow-up StudySAGE Publications - Tập 76 Số 10 - Trang 1667-1674 - 1997
Lars Lindquist, Gunnar E. Carlsson, Torsten Jemt
While many factors are conceivable, occlusal loading and plaque-induced inflammation are frequently stated as the most important ones negatively affecting the prognosis of oral implants. Currently, little is known about the relative importance of such factors. The aim of this study was to analyze the influence of smoking and other possibly relevant factors on bone loss around mandibular i...... hiện toàn bộ
Subgingival and Tongue Microbiota during Early PeriodontitisSAGE Publications - Tập 85 Số 4 - Trang 318-323 - 2006
A. C. R. Tanner, Bruce J. Paster, Shulin C. Lu, E. Kanasi, Ralph Kent, Thomas E. Van Dyke, Stephen T. Sonis
Periodontal infections have a microbial etiology. Association of species with early disease would be useful in determining which microbes initiate periodontitis. We hypothesized that the microbiota of subgingival and tongue samples would differ between early periodontitis and health. A cross-sectional evaluation of 141 healthy and early periodontitis adults was performed with the use of o...... hiện toàn bộ
Salivary Amylase Promotes Adhesion of Oral Streptococci to HydroxyapatiteSAGE Publications - Tập 74 Số 7 - Trang 1360-1366 - 1995
Frank A. Scannapieco, Guillermo Torres, Michael J. Levine
Recent studies have demonstrated that several species of oral streptococci, such as Streptococcus gordonii, bind soluble salivary a-amylase. The goal of the present study was to determine if amylase immobilized onto a surface such as hydroxyapatite can serve as an adhesion receptor for S. gordonii. Initially, human parotid saliva was fractionated on Bio-Gel P60, and fractions were screene...... hiện toàn bộ
Characterization of the α-amylase Receptor of Streptococcus gordonii NCTC 7868SAGE Publications - Tập 69 Số 11 - Trang 1746-1752 - 1990
C.W.I. Douglas
The purpose of the work described here was to investigate the mechanisms involved in the binding of salivary α-amylase to Streptococcus gordonii NCTC 7868 (Challis). Of six types of a-amylase studied, only mammalian forms of the enzyme were found to bind to S. gordonii cells. Salivary a-amylase binding was inhibited by treatment of cells with trypsin and pronase, but not with pepsin or so...... hiện toàn bộ