MUMBAI, India, March 13 -- Intellectual Property India has published a patent application (202641025470 A) filed by Meenakshi Academy Of Higher Education And Research; and Meenakshi Ammal Dental College And Hospital, Chennai, Tamil Nadu, on March 4, for 'bio-resorbable collagen cone for root canal obturation in primary teeth.'
Inventor(s) include Jaiganesh Inbanathan; Krithika C; Anitha R; Navami Gopan; Amilia Elizabeth; and Sanjana Mr.
The application for the patent was published on March 13, under issue no. 11/2026.
According to the abstract released by the Intellectual Property India: "The present invention discloses a bio-resorbable collagen cone for root canal obturation in primary teeth. The cone comprises a Type I collagen matrix present at 85-90% (w/w), forming a biocompatible and biodegradable scaffold that facilitates physiologic root resorption. Barium sulphate is incorporated at 5-8% (w/w) to impart radiopacity comparable to dentin for effective post-operative radiographic assessment. Metronidazole at 2-3% (w/w) provides sustained antimicrobial activity against obligate anaerobes commonly present in infected primary root canals, while silver nanoparticles at 0.1-0.3% (w/w) with a particle size of 10-50 nm synergistically enhance broad-spectrum antimicrobial efficacy. The cone is pre-formed with a standardized taper of 2%, 3%, or 4%, having a total length of 20 mm and corresponding cross-sectional diameters at 10 mm to ensure snug canal adaptation, minimize void formation, promote preferential apical resorption, and facilitate ease of insertion in pediatric endodontic procedures."
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