Abstract:
The invention relates to a simple and high yield process for producing a regenerated silk fibroin which does not need dialysis. Particularly, a process of the invention is characterized in that the silk fibroin is precipitated by applying a shear stress and/or changing the solvent power of the fibroin solution. The process of the invention simplifies the process of producing silk fibroin and greatly shortens the process time to 1 to 2 hours, whereas the conventional dialysis process is complex and needs around 2 to 3 days. In addition to reducing the time needed, the process of the invention can increase productivity of silk fibroin by at least 8%.
Abstract:
A composite bio-ceramic dental implant and fabricating method thereof are disclosed. The composite bio-ceramic is sintered at a temperature between 1000 and 1800° C. using the nearly inert bio-ceramic powder and the active bio-ceramic powder or the completely resorbable bio-ceramic powder. The bioactive bio-ceramic material is dispersed in the inert bio-ceramic material. Therefore, the composite bio-ceramic has enough mechanical strength and good bioactivity for dental implant.
Abstract:
A novel amorphous divalent metal ion salt for enhancing the manageability of a Portland cement and its application in dental field are disclosed. Typical formula (I), (II), or (III) of this amorphous metal ion salt are shown as following: M 2 + A x - B 2 - x - ( I ) M 2 + A y 2 - C ( 4 - y ) 4 2 - ( II ) M 2 + A z 3 - D ( 6 - z ) 9 3 - ( III ) wherein, M2+, A−, B−, C−2, D−3, x, y, and z are defined the same as the specification. A novel tooth filling material comprises: a Portland cement, a bone substitute substance, and an amorphous divalent metal ion salt with formula of (I), (II), or (III). In addition, a novel root canal filling material comprises: a Portland cement, a radiopaque substance, and an amorphous divalent metal ion salt with formula of (I), (II), or (III). This amorphous divalent metal ion salt in the filling material of the present invention can improve the sticking together and reduce the setting time, thus offering more convenient in dental applications.
Abstract translation:公开了一种用于提高波特兰水泥的可管理性的新型无定形二价金属离子盐及其在牙科领域的应用。 该无定形金属离子盐的典型式(I),(II)或(III)表示如下:M 2 + A X - B 2 - x - (I)M 2 + A y 2 - C(4-y)4 2 - (II)M 2 + A 3 Z 3 - D(6-z)9 3 - (III)其中,M2 +,A-,B-,C-2,D-3 ,x,y和z定义与说明书相同。 一种新型牙齿填充材料包括:波特兰水泥,骨替代物质和具有式(I),(II)或(III)的式的无定形二价金属离子盐。 此外,新颖的根管填充材料包括:波特兰水泥,不透射线的物质和具有式(I),(II)或(III)的式的无定形二价金属离子盐。 本发明的填充材料中的这种无定形二价金属离子盐可以改善粘合在一起并缩短凝固时间,从而在牙齿应用中提供更方便。
Abstract:
The invention provides a process for preparing α-calcium sulfate hemihydrate which comprises the following steps: adding aqueous solutions containing sulfate ions and calcium ions to calcium chloride solution with a range of concentration; reacting the mixture of a) at a range of temperature for an appropriate time; filtering and washing the reaction products of b) with a rising solvent to isolate the solid and liquid phases; and d) collecting and drying the solid phase to obtain α-calcium sulfate hemihydrate with high purity; wherein the relationship between the range of the concentration of calcium chloride (y) and the range of the reaction temperature (x) is shown as the following formula: −0.4x5+7.33x4−52.83x3+187.17x2−328.27x+316
Abstract:
An apparatus for detecting the stability of a tooth in the gum or an implant in the body is constructed to include a holder for holding a test object to be examined, an impact device disposed at one side of the holder for striking the test object, causing the test object to produce vibrations, and sensor means disposed at one side of the holder for detecting the vibrations produced by the test object upon the striking of the impact device against the test object.
Abstract:
A micro-implantable apparatus and method for the stability assessment of a two-stage dental implant during Osseo integration processes, whose detection device is based on a transmission of a pulse wave signal from an upper opening of an implant and a subsequent analysis of the reflection waves that measure the changes in mechanical interlock between the bone and the implant resulted from the wound healing processes happened at the gap between bone-implant interface. The incorporation of RF coils in the detection device provides a mean to transmit and to receive the detection waves, which makes it possible for such a device to be operated in a wireless setting. This device also includes an energy storage, which serve as a temporary power supply unit to effectively eliminate the need for signal wires and power cores, which in turn further increases the applicability and safety of such a device as a passive, implant able apparatus.
Abstract:
The invention provides an anion-containing calcium phosphate compound, composition and dental patch comprising the same and their use in remineralizing teeth. The anion-containing calcium phosphate compound has the following formula: (Ca+2)x(anion−a)y(PO4−3)z wherein 2x=(a*y+3z); a is an integer of 1 to 3; and each of x, y and z is not 0.
Abstract:
The invention relates to a method of preparing a composite or porous composite used as a biodegradable scaffold, the composite prepared therefrom and the use of the composite. In particular, the composite is a calcium sulfate-polylactic acid composite or porous composite and the composite can be especially used as an in situ pore forming scaffold.
Abstract:
A novel amorphous divalent metal ion salt for enhancing the manageability of a Portland cement and its application in dental field are disclosed. Typical formula (I), (II), or (III) of this amorphous metal ion salt are shown as following: M 2 + A x - B 2 - x - ( I ) M 2 + A y 2 - C ( 4 - y ) 4 2 - ( II ) M 2 + A z 3 - D ( 6 - z ) 9 3 - ( III ) wherein, M2+, A−, B−, C−2, D−3, x, y, and z are defined the same as the specification. A novel tooth filling material comprises: a Portland cement, a bone substitute substance, and an amorphous divalent metal ion salt with formula of (I), (II), or (III). In addition, a novel root canal filling material comprises: a Portland cement, a radiopaque substance, and an amorphous divalent metal ion salt with formula of (I), (II), or (III). This amorphous divalent metal ion salt in the filling material of the present invention can improve the sticking together and reduce the setting time, thus offering more convenient in dental applications.
Abstract translation:公开了一种用于提高波特兰水泥的可管理性的新型无定形二价金属离子盐及其在牙科领域的应用。 该非晶金属离子盐的典型的式(I),(II)或(III)表示如下:M 2 + A x -B 2-x - (I)M 2 + A y 2 - C(4-y)4 2 - (II)M 2 + A z 3 -D(6-z)9 3 - (III)其中,M2 +,A-,B-,C-2,D-3 ,x,y和z定义与说明书相同。 一种新型牙齿填充材料包括:波特兰水泥,骨替代物质和具有式(I),(II)或(III)的式的无定形二价金属离子盐。 此外,新颖的根管填充材料包括:波特兰水泥,不透射线的物质和具有式(I),(II)或(III)的式的无定形二价金属离子盐。 本发明的填充材料中的这种无定形二价金属离子盐可以改善粘合在一起并缩短凝固时间,从而在牙齿应用中提供更方便。
Abstract:
The invention provides a composite of α-calcium sulfate (CS) hemihydrate/amorphous calcium phosphate (α-CSH/ACP), comprising α-CSH and ACP at a weight ratio of about 10:90 to about 90:10. Particularly, the composite of the invention has a resorption period of 3-6 months. The invention also provides a one-pot process for producing α-CSH/ACP composite of the invention. The one-pot process of the invention can produce α-CSH and ACP in a single process and easily obtain α-CSH/ACP composite.