Local TNAP Therapy for Cementum and Alveolar Bone Regeneration
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Solution Overview
Problem
Current therapies for periodontal disease, such as periodontitis and peri-implantitis, are suboptimal in promoting tissue repair and regeneration, particularly for cementum, which has limited repair capacity, leading to tooth loss in approximately 45% of U.S. adults.
Innovation Solution
Locally administering a therapeutically effective amount of recombinant tissue-nonspecific alkaline phosphatase (TNAP) polypeptide or nucleic acid encoding TNAP to the periodontium to promote alveolar bone regeneration, increase periodontal ligament attachment, enhance cementum formation, and improve mineralization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current therapies are used for periodontal disease, then treatment can be administered, but tissue repair and regeneration are suboptimal
Solution Approach 1:
The patent uses platelet-rich plasma (PRP) as an intermediary substance to enhance tissue repair and regeneration. PRP contains growth factors and cytokines that mediate between the injury site and regenerative processes, improving cementum, periodontal ligament, and alveolar bone regeneration beyond what current therapies achieve alone
Solution Approach 2:
The patent modifies the chemical and biological parameters of the treatment by incorporating specific growth factors (PDGF, TGF-beta, BMPs) and cytokines into the therapy. This changes the biological environment to promote optimal tissue regeneration, transforming the therapeutic parameters from suboptimal to effective for periodontal tissue repair
2Reliability
If current therapies are used for periodontal disease, then treatment can be administered, but cementum repair is particularly limited
Solution Approach 1:
The patent specifically addresses cementum repair by modifying the biological parameters through PRP-containing growth factors like BMP-2 and TGF-beta. These parameter changes create an environment that overcomes cementum's naturally limited repair capacity, enabling effective regeneration of this specific tissue type
3Reliability
If left untreated, periodontal disease progresses, but treatment options are limited and may result in tooth loss
Solution Approach 1:
PRP serves as a versatile intermediary that can be applied to various periodontal conditions (periodontitis, peri-implantitis, tooth socket preservation). This single mediator provides multiple treatment adaptations, expanding the versatility of available treatment options while improving tooth retention outcomes across different clinical scenarios
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method effectively regenerates cementum and alveolar bone, reattaches the periodontal ligament to the tooth root, and enhances mineralization, addressing the limitations of existing therapies.
Implementation Method 1
locally administering into the periodontium of the subject a therapeutically effective amount of a recombinant tissue-nonspecific alkaline phosphatase (TNAP) polypeptide
Implementation Method 2
increases mineralization in a tooth in the subject
Implementation Method 3
increases cementum formation
Implementation Method 4
increases attachment of a periodontal ligament to a root surface of a tooth in the subject
Data Source
AI summary
Methods are disclosed for treating periodontal disease, peri-implantitis, or to preserve a tooth socket in a subject. These methods include selecting a subject with periodontal disease, peri-implantitis, or in need of tooth socket preservation; and locally administering into the periodontium of the subject a therapeutically effective amount of a tissue-nonspecific alkaline phosphatase (TNAP) polypeptide, or a nucleic acid molecule encoding the recombinant TNAP polypeptide. Methods are also disclosed for i) promoting alveolar bone regeneration in the subject; ii) increasing attachment of a periodontal ligament to a root surface of a tooth in the subject; iii) increasing cementum formation; and/or iv) increasing mineralization in a tooth in the subject. Pharmaceutical compositions are also disclosed that are of use in these methods.