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Publication Number
US-12426996-B2
Publication Date
2025-09-30
Expiration Date
Abstract
A dental membrane that is used with a patient having insufficient bone at a surgical site during a ridge augmentation. The dental membrane includes a first layer and a second layer. The first layer is cortical bone or formed from artificial bone materials to have characteristics of cortical bone. The second layer is cancellous bone or formed from artificial bone materials to have characteristics of cancellous bone.
Core Innovation
The invention relates to a dental membrane for ridge augmentation and guided bone regeneration, where the membrane includes a first layer and a second layer. The first layer includes one or more of cortical bone and an artificial bone material having characteristics of cortical bone, and the second layer includes one or more of cancellous bone and an artificial bone material having characteristics of cancellous bone.
The first and second layers are coupled to each other, and the first composition is different from the second composition. The membrane is characterized by different porosity and/or pore diameter relationships between the layers, where a first porosity of the first layer is less than a second porosity of the second layer and/or a first average pore diameter of the first layer is smaller than a second average pore diameter of the second layer.
In further embodiments, the dental membrane includes a first layer formed from cortical bone and a second layer formed from cancellous bone with different compositions. The layers are coupled with a biocompatible adhesive, and the first and second layers form an arc in which the first layer defines an outer surface of the arc and the second layer defines an inner surface of the arc. The first layer has a thickness and a porosity that are less than the thickness and porosity of the second layer.
Claims Coverage
The document includes three independent claims, each grounded on a two-layer membrane with different cortical-like and cancellous-like layer compositions and coupled layer relationships. Across the independent claims, there are inventive features specifying composition differences, coupling, and relative porosity and pore size, and in one claim, thickness and arc surface definitions.
Cortical-like first layer and cancellous-like second layer with coupled different compositions
A dental membrane comprising a first layer having a first composition comprising one or more of cortical bone and an artificial bone material that has characteristics of cortical bone; and a second layer having a second composition comprising one or more of cancellous bone and an artificial bone material that has characteristics of cancellous bone; wherein the first layer is coupled to the second layer; wherein the first composition is different from the second composition.
Lower porosity and smaller pore diameter in the first layer than the second layer
A dental membrane wherein a first porosity of the first layer is less than a second porosity of the second layer and a first average pore diameter of the first layer is smaller than a second average pore diameter of the second layer.
Obtaining predominantly cortical bone first layer and predominantly cancellous bone second layer with coupled different compositions
A method of forming a dental membrane comprising obtaining a first layer comprising predominantly cortical bone; obtaining a second layer comprising predominantly cancellous bone; and coupling the first layer to the second layer, wherein a first composition of the first layer is different than a second composition of the second layer.
First layer has less porosity and smaller average pore size than the second layer in the method
A method of forming a dental membrane wherein a first porosity of the first layer is less than a second porosity of the second layer and an average pore size of the first layer is less than an average pore size of the second layer.
Arc-forming two-layer dental membrane with outer and inner arc surfaces defined by layer
A dental membrane comprising a first layer being formed from cortical bone; and a second layer being formed from cancellous bone, the first and second layers having different compositions, wherein the first layer is coupled to the second layer with a biocompatible adhesive, wherein the first layer and the second layer form an arc and the first layer defines an outer surface of the arc and the second layer defines an inner surface of the arc.
Thickness and porosity of the first layer are less than those of the second layer
A dental membrane wherein the first layer has a thickness and a porosity less than a thickness and a porosity of the second layer.
Across the independent claims, the core claimed structure is a coupled two-layer dental membrane in which a cortical-like first layer differs in composition from a cancellous-like second layer, and the first layer exhibits lower porosity and/or smaller pore size than the second layer. One independent claim further specifies arc formation with outer and inner arc surfaces defined by the cortical and cancellous layers, and requires the cortical layer to have both thickness and porosity less than the cancellous layer.
Stated Advantages
Maintains ridge shape under chewing/accidental forces.
Prevents soft-tissue ingrowth.
Promotes bone ingrowth and bone remodeling.
Avoids additional procedures by using bone-derived or artificial bone materials.
Documented Applications
Ridge augmentation.
Guided bone regeneration.
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