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Search Publications by Shozo Takagi

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Displaying 1 - 25 of 53

In Vitro and in Vivo Characteristics of Fluorapatite-forming Calcium Phosphate Cements

August 1, 2010
Shozo Takagi, Stanislav A. Frukhtbeyn, Laurence C. Chow, Akiyoshi Sugawara, Kenji Fujikawa, Kidehiro Ogata, Makoto Hayashi, Bunnai Ogiso
This study reports for the first time in vitro and in vivo properties of fluorapatite (FA)-forming calcium phosphate cements (CPCs). The experimental cements contained from (0 to 3.3) mass % of F, corresponding to presence of FA at levels of approximately

Properties of Injectable Apatite-Forming Premixed Cements

April 10, 2010
Yasushi Shimada, Laurence C. Chow, Shozo Takagi, Junji Tagami
A previously reported, premixed calcium phosphate cements (CPC) forms hydroxyapatite (HA) as the only product, but had a setting time greater than 60 min. This study investigated properties of fast-hardening HA-forming premixed CPCs. All cements consisted

Ca Pre-Rinse Greatly Increases Plaque and Plaque Fluid F After a F Rinse

May 1, 2008
Gerald L. Vogel, Gary E. Schumacher, Laurence C. Chow, Shozo Takagi, Clifton M. Carey
This study examines if a Ca pre-rinse/F rinse increased plaque and plaque fluid F relative to the F rinse alone. Subjects (n = 13) accumulated plaque two days before rinsing with: (1) 12 mmol/L F (NaF), (2) 150 mmol/L Ca rinse, (3) the Ca rinse followed by

Calcium Phosphate Cement With Non-Rigidity and Strength Durability for Periodontal Bone Repair

August 1, 2006
Hockin D. Xu, Shozo Takagi, Limin Sun, L A. Hussain, Laurence C. Chow, William F. Guthrie, James H. Yen
Background. The need for biomaterials to treat periodontal osseous defects has increased as the world population ages. The objective of the present study was to develop a self-hardening, resorbable, and mech/anically strong calcium phosphate cement (CPC)

Fast Setting CPC-Chitosan Composite: Mechanical Properties and Dissolution Rates

March 16, 2006
Limin Sun, Hockin D. Xu, Shozo Takagi, Laurence C. Chow
Calcium phosphate cement (CPC) can self-harden in vivo to form hydroxyapatite with excellent osteoconductivity. In recent studies, CPC-chitosan composites were developed with high mechanical strength and washout resistance. The objectives of the present

Effect of a Calcium Pre-Rinse on Salivary Fluoride After a 228-ppm Fluoride Rinse

August 1, 2005
Gerald L. Vogel, Laurence C. Chow, Clifton M. Carey, Gary E. Schumacher, Shozo Takagi
The objective of this study was to determine if a concentrated calcium pre-rinse given before a F rinse would cause an increase in the post rinse salivary fluoride (F). The three pre-rinses tested, (30, 150 or 300) mmol/L calcium as calcium lactate

In-Situ Hardening Hydroxyapatite-Based Scaffold for Bone Repair

July 7, 2005
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

Premixed Rapid-Setting Calcium Phosphate Composites for Bone Repair

January 1, 2005
Lisa E. Carey, Hockin D. Xu, Carl G. 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

Properties of Elastomeric Calcium Phosphate Cement-Chitosan Composites

December 1, 2003
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
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