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US 9,943,379 B2Granted
Laser-assisted periodontics
OwnerRobert H Gregg, II, Dawn Gregginventors
Life of this patent
Estimating the term…
Abstract
There is a need for a minimally invasive surgical treatment method for periodontitis for the removal of deep pockets, elimination of disease, creation of reattachment of the gingiva to the tooth surface and true regeneration of the attachment apparatus (new cementum, new periodontal ligament, and new alveolar bone) on a previously diseased root surface. The PerioLase® MVP-7™ including eGUI or another device capable of laser dosimetry, such as an original MVP-7™ type laser without the eGUI, achieves this with the LANAP protocol (laser-assisted new attachment procedure) and the LENAP protocol (laser excisional new attachment procedure).
Claims28
A laser-assisted gingivitis and periodontitis bone, periodontal ligament and cementum tissue complex true regeneration procedure using a free-running (FR) pulsed neodymium yttrium aluminum garnet (Nd:YAG) laser device, the procedure comprising:
- anesthetizing soft and hard tissues corresponding to a targeted tooth, quadrant or sextant of teeth of a patient, the tooth having a root and root surface;
- bone-sounding in a pocket around the targeted tooth and root using a periodontal probe, and recording the depths of all bony defects in the soft tissue around the tooth root and to bone, and into the bony defect, from an upper gingival margin to the extent of the accessible bony defect;
- photothermally rupturing, disassociating, separating, ablating, denaturing and vaporizing the inner diseased, inflamed, infected, bacteria-invaded, or ulcerated epithelial lining of the pocket and granulomatous tissues, reducing inflammation, or denaturing pathologic proteins, or photothermally altering, disrupting, denaturing, dehydrating or destroying calculus or concrements on the tooth and root surface, to the soft tissue or hard tissue extent of the pocket and full bony defect, on the tooth or root to prepare an apical to coronal new connective tissue surface, or to prepare the root surface of said tooth for a complete new true regenerative tissue complex consisting of new alveolar bone, periodontal ligament and cementum, or long junctional epithelium;
- lasing the tooth and root surface to destroy or denature lipopolysaccharides (LPS) of bacteria;
- debridement or removal from the tooth or root surface foreign matter, bacterial smear layer covering and included in soft and hard calcification, calculus, concrements, cement on the tooth or root surface to the depth of the pocket on the sides of the tooth or root surfaces from crestal margin to bony defect base;
- dissecting, releasing, cutting, breaking through any attachments between the soft tissue and the root surface to create a surgical flap and access to the bony defect;
- performing at least one of reshaping, removing, resecting, transecting, troughing, modifying, manipulating, decorticating or perforating the bone to perform an osteotomy or ostectomy, or to initiate angiogenesis;
- lasing to irradiate the bone at the base of the bony defect to initiate hemostasis from the medullary bone, stimulate and upregulate the release of growth factors, and stimulate or upregulate fibroblasts or stem cells, warm the blood in the pocket to cleave fibrinogen, converting the blood into fibrin, create a stable fibrin clot, and create angiogenesis;
- remove or denature granulomatous tissue and inflamed, infected and diseased epithelial lining, leaving granulation tissue in place inclusive of stem cells, or capillaries, or fibroblasts, but disinfected, and disinfect, assist in hemostasis, cauterize free nerve endings, or seal lymphatics of the pocket tissue surface, and prepare the pocket tissue surface for adhesion;
- lasing the pocket tissue surface to adapt the pocket tissue surface for tissue adhesion;
- maintaining the pocket tissue surface in contact with the tooth and root surface to advance adhesion;
- and
- eliminating occlusal interferences and occlusal traumatic forces.
10 more elements
A laser-assisted gingivitis or complete periodontitis bone, periodontal ligament or cementum tissue complex true regeneration procedure using a free-running (FR) pulsed neodymium yttrium aluminum garnet (Nd:YAG) laser device with a 1,064-nanometer wavelength and operating over a parameter range which includes duty cycles between 0.10 and 1.95 percent (100 to 650 microseconds at 10 to 30 hertz);
- average powers between 2.4 Watts and 6.0 Watts;
- energy levels between 80 millijoules and 600 millijoules;
- peak powers between 123 Watts/pulse and 6000 Watts/pulse;
- energy densities between 64 J/cm2 and 849 J/cm2;
- and power densities between 1910 Watts/cm2 and 8488 Watts/cm2, the procedure comprising:
- a) anesthetizing soft and hard tissues via a nerve block or alternatively by infiltration, corresponding to a targeted tooth, quadrant or sextant of teeth of a patient, the tooth having a root and root surface;
- b) bone-sounding in a pocket around the targeted tooth and root using a periodontal probe, and recording the depths of the bony defects in the soft tissue around the tooth root and to bone, and into the full bony defect, from an upper gingival margin to the extent of the accessible bony defect;
- c) recording the sum total of all probe depths/bone soundings and multiplying by 1 to 40, depending on soft tissue phenotype (biotype), a laser-assisted periodontal regeneration Periodontal Disease Case Type Classification I-V, and a laser-assisted periodontal regeneration Tooth Mobility Score 0-4, so as to obtain a total light dose estimation in units of Joules to be delivered;
- d) photothermally rupturing, disassociating, separating, ablating, denaturing or vaporizing the epithelial lining of the pocket and granulomatous tissues, reducing inflammation, denaturing pathologic proteins photothermally altering, disrupting, denaturing, dehydrating or destroying hard calcified calculus or concrements on the tooth and root surface, to the soft tissue or hard tissue extent of the pocket and full bony defect, on the tooth and root to prepare a new connective tissue surface, and to prepare the root surface of said tooth for a complete new tissue complex consisting of new alveolar bone, periodontal ligament and cementum, or long junctional epithelium, wherein said step of ablating and vaporizing comprises application of ⅔ of the total light dose using an optical fiber, with diameter between 200 and 600 microns, fed through a handpiece and a bendable cannula, while operating the FR Nd:YAG laser device within the parameter range;
- e) lasing the tooth and root surface to destroy or denature lipopolysaccharides (LPS) of gram-negative bacteria;
- f) debridement or removal from the tooth and root surface of foreign matter, bacterial smear layer covering and included in soft and hard calcification, calculus, concrements, cement on the tooth or root surface on the sides of the tooth or root surfaces from crestal margin to bony defect base, wherein said step of cleaning comprises lasing or application of a piezo-electric ultrasonic device with water lavage;
- g) dissecting, releasing, cutting, breaking through attachments between the soft tissue and the root surface to create a surgical flap or access to the bony defect wherein said step (g) comprises application of a piezo-electric ultrasonic device with water lavage;
- h) performing at least one of reshaping, removing, resecting, transecting, troughing, modifying, manipulating, decorticating or perforating the bone to perform an osteotomy or ostectomy, or to initiate angiogenesis, wherein said step (h) comprises application of at least one of a piezo-electric ultrasonic device with use of specialized tips, a laser, or hand instrumentation;
- i) irrigating the pocket with a bactericidal solution;
- j) lasing to irradiate the bone at the base of the bony defect in the pocket depth measurement locations to initiate hemostasis from the medullary bone, stimulate and upregulate the release of growth factors , or stimulate or upregulate fibroblasts or stem cells, warm the blood in the pocket to cleave fibrinogen thereby converting the blood into fibrin, create a stable fibrin clot, or create angiogenesis;
- remove or denature any remaining granulomatous tissue or inflamed, infected or diseased epithelial lining, leaving granulation tissue in place inclusive of stem cells, capillaries, fibroblasts, but disinfected, and disinfect, assist in hemostasis, cauterize free nerve endings, or seal lymphatics of the pocket tissue surface, or prepare the pocket tissue surface for adhesion;
- k) lasing the pocket tissue surface to adapt the pocket tissue surface for tissue adhesion;
- wherein said steps (j) and (k) of lasing comprise application of the remaining ⅓ of the total light dose using a quartz optical fiber fed with a diameter between 200 and 600 microns, through a handpiece and bendable cannula, while operating the FR Nd:YAG laser device within the parameter range;
- l) approximating the pocket tissue surface with the tooth or root surface;
- m) maintaining the pocket tissue surface in contact with the tooth or root surface to advance adhesion;
- and
- n) eliminating occlusal interferences or occlusal traumatic forces.
19 more elements
Dependencies are inferred from the claim text.