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Displaying 51 - 75 of 108

High Early Strength Calcium Phosphate Bone Cement: Effects of Dicalcium Phosphate Dihydrate and Absorbable Fibers

August 1, 2005

Author(s)

Elena F. Burguera, Hockin D. Xu, Shozo Takagi, Laurence C. Chow

Calcium phosphate cement (CPC) sets in situ to form resorbable hydroxyapatite with chemical and crystallographic similarity to the carbonated apatite in human bones, hence is highly promising for clinical applications. The objective of the present study

In-Situ Hardening Hydroxyapatite-Based Scaffold for Bone Repair

July 7, 2005

Author(s)

Yu Zhang, Hockin D. Xu, Shozo Takagi, Laurence C. Chow

Musculoskeletal conditions are becoming a major health concern because of an aging population and sports- and traffic-related injuries. While sintered hydroxyapatite implants require machining, calcium phosphate cement (CPC) bone repair material is

Physical Properties of Composite Bone Grafts Consisting of Calcium Phosphate Cement and Chondroitin Sulfate (Poster)

April 1, 2005

Author(s)

Francis W. Wang, S Hirayama, James H. Yen, Shozo Takagi

Calcium phosphate cement (CPC), consisting of tetracalcium phosphate (TTCP) and dicalcium phosphate anhydrous (DCPA), sets by reacting with water to form hydroxyapatite (HA). Aqueous polymer solutions also have been used with CPC powder to form composite

Hydrolysis of Tetracalcium Phosphate Under a Near Constant-Composition Condition: Effects of pH and Particle Size

February 1, 2005

Author(s)

Laurence C. Chow, Milenko Markovic, B A. Frukhtbyen, Shozo Takagi

Tetracalcium phosphate (TTCP) is a component of a number of calcium phosphate cements used clinically for bone defect repairs. The properties of the cement such as setting time, strength, phase composition, and solubility are highly dependent on cement

Premixed Rapid-Setting Calcium Phosphate Composites for Bone Repair

January 1, 2005

Author(s)

Lisa E. Carey, Hockin D. Xu, Carl Simon Jr., Shozo Takagi, Laurence C. Chow

Abstract (A-2000 character or less factual summary of most significant information. If document includes a significant bibliography or literature survey, cite it here. Spell out acronyms on first reference.) Although calcium phosphate cement (CPC) is

Fast-Setting Calcium Phosphate Scaffolds With Tailored Macropore Formation Rates for Bone Regeneration

March 1, 2004

Author(s)

Hockin D. Xu, Shozo Takagi, Janet Quinn, Laurence C. Chow

Calcium phosphate cement (CPC) is highly promising for craniofacial and orthopedic repair due to its ability to self-harden in situ to form hydroxyapatite with excellent osteoconductivity. However, its low strength, long hardening time, and lack of

Synergistic Reinforcement of In Situ Hardening Calcium Phosphate Composite Scaffold for Bone Tissue Engineering

March 1, 2004

Author(s)

Hockin D. Xu, Janet Quinn, Shozo Takagi, Laurence C. Chow

Calcium phosphate cement (CPC) hardens in situ to form solid hydroxyapatite, can conform to complex cavity shapes without machining, has excellent osteoconductivity, and is able to be resorbed and replaced by new bone. Therefore, CPC is promising for use

Reduction in dentin permeability using mildly supersaturated calcium phosphate solutions

February 1, 2004

Author(s)

Ai-Shuan(Maria) Cherng, Laurence C. Chow, Shozo Takagi

Treatments that obdurate dentin tubules have been used for reducing dentin hypersensitivity. The objective of this study was to determine the effects of multiple treatments with a mildly supersaturated calcium phosphate solution on the hydraulic

Properties of Elastomeric Calcium Phosphate Cement-Chitosan Composites

December 1, 2003

Author(s)

Shozo Takagi, Laurence C. Chow, S Hirayama, F Eichmiller

Self-hardening calcium phosphate cements (CPC) have been shown to be efficacious in a number of clinical applications for which other currently available materials do not work well. However, for some applications, for example in filling periodontal defects

Premixed Calcium Phosphate Cement Pastes

November 1, 2003

Author(s)

Shozo Takagi, Laurence C. Chow, S Hirayama, A Sugawara

A self-hardening calcium phosphate cement (CPC-I), consisting of tetracalcium phosphate (TTCP) and dicalcium phosphate anhydrous (DCPA), has been shown in clinical studies to be efficacious as bone repair materials. The hardening time (HT) of the cement is

A Dual Constant-Composition Titration System as In Vitro Resorption Model for Comparing Dissolution Rates of Calcium Phosphate Biomaterials

May 1, 2003

Author(s)

Laurence C. Chow, Milenko Markovic, Shozo Takagi

It has been postulated that the in vivo resorption rates of calcium-phosphate bone-graft materials are closely related to their dissolution rates in demineralizing solutions having ionic compositions mimicking the acidic environment produced by osteoclasts

Histopathologic Reaction of a Calcium Phosphate Cement for Alveolar Ridge Augmentation

July 1, 2002

Author(s)

A Sugawara, K Fujikawa, S K. Kusama, M Nishiyama, S Murai, Shozo Takagi, Laurence Chow

The objective of the present study was to evaluate the feasibility of using a calcium phosphate cement (CPC) in the reconstruction of a defective alveolar ridge in conjunction with implant placement. The CPC consisted of an equimolar amount of tetracalcium

Remineralization Effect of a Low-Concentration Fluoride Rinse in an Intraoral Model

April 1, 2002

Author(s)

Laurence C. Chow, Shozo Takagi, Stanislav A. Frukhtbeyn, B A. Sieck, Edward E. Parry, N S. Liao, Gary E. Schumacher, Milenko Markovic

A previous study showed that a sodium hexafluorosilicate-calcium chloride-based two-solution fluoride (F) rinse containing 6 mmol/l of F was more effective than a 12 mmol/l F sodium fluoride rinse in depositing F on tooth surfaces and increasing oral F