# US 9,872,743 B2 · Clear aligner set and orthodontic treatment method considering resilience of human body > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,872,743 B2 - Document ID: US9872743B2 - Status: Granted - Kind: B2 - Application number: 15/051,881 - Filed: 2016-02-24 - Published: 2017-08-24 - Granted: 2018-01-23 - Earliest claimed: 2016-02-24 - Assignees: eClear International Co., Ltd. - Applicants: eClear International Co., Ltd. - Inventors: Taeweon Kim - Web page: https://patentgrep.com/patent/US9872743B2 ## CPC - A61C 7/08: Mouthpiece-type retainers {or positioners, e.g. for both the lower and upper arch (arch-shaped medicament applicators for teeth or gums A61C19/063; mouthguards for protecting the teeth of sportsmen A63B71/085)} - B29C 51/10: Forming by pressure difference, e.g. vacuum - B33Y 80/00: Products made by additive manufacturing - B29C 51/08: Deep drawing or matched-mould forming, i.e. using mechanical means only - B29K 2995/0026: Transparent - B29L 2031/753: {Medical equipment; Accessories therefor (bloodbags, medical bags B29L2031/7148; artificial eyes B29L2011/0008)} - A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract Provided are a clear aligner set and an orthodontic treatment method considering resilience of a human body. The clear aligner set may include at least one first clear aligner, having a first restoring force to apply a first pressing force to teeth during a first period, and primarily wearable by an orthodontic patient, at least one second clear aligner, having a second restoring force greater than the first restoring force to apply a second pressing force greater than the first pressing force to the teeth during a second period, and secondarily wearable by the orthodontic patient, and at least one third clear aligner, having a third restoring force greater than the second restoring force to apply a third pressing force greater than the second pressing force to the teeth during a third period, and tertiarily wearable by the orthodontic patient. ## Claims ### Claim 1 A clear aligner set considering resilience of a human body, the clear aligner set comprising: at least one first clear aligner having a first orthodontic space therein, formed of a first transparent material, having a first restoring force to apply a first pressing force to teeth for a first wearing time a day during a first period in consideration of the resilience of a human body, and primarily wearable by an orthodontic patient; at least one second clear aligner having a second orthodontic space therein, formed of a second transparent material, having a second restoring force greater than the first restoring force to apply a second pressing force greater than the first pressing force to the teeth for a second wearing time a day during a second period in consideration of the resilience of the human body, and secondarily wearable by the orthodontic patient; at least one third clear aligner having a third orthodontic space therein, formed of a third transparent material, having a third restoring force greater than the second restoring force to apply a third pressing force greater than the second pressing force to the teeth for a third wearing time a day during a third period in consideration of the resilience of the human body, and tertiarily wearable by the orthodontic patient; wherein the first orthodontic space is a space corresponding to the teeth; wherein the second orthodontic space is a space larger than the first orthodontic space to accommodate the at least one first clear aligner therein; and wherein the third orthodontic space is a space larger than the second orthodontic space to accommodate the at least one second clear aligner therein. ### Claim 2 (depends on 1) The clear aligner set of claim 1, wherein the at least one first clear aligner is manufactured by high-temperature vacuum-absorbing or pressing the first transparent material onto one 3D-printed teeth model having desired teeth positions, wherein the at least one second clear aligner is manufactured by high-temperature vacuum-absorbing or pressing the second transparent material onto the at least one first clear aligner, wherein the at least one third clear aligner is manufactured by high-temperature vacuum-absorbing or pressing the third transparent material onto the at least one second clear aligner. ### Claim 3 (depends on 1) The clear aligner set of claim 1, wherein, to prevent unintended detachment from the teeth, the at least one first clear aligner comprises: a teeth part corresponding to the teeth; a gingiva part corresponding to gingiva supporting the teeth; and a protrusion part corresponding to concave interfaces between the teeth and the gingiva. ### Claim 4 (depends on 1) The clear aligner set of claim 1, wherein the first, second, and third transparent materials are resin materials based on the same polymer, wherein the at least one first, second and third clear aligners have the same thickness. ### Claim 5 (depends on 1) The clear aligner set of claim 1, wherein the first transparent material is a soft material, wherein the second transparent material is a medium material, and wherein the third transparent material is a hard material.