{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T11:32:44Z","timestamp":1787916764888,"version":"build-2784847793"},"reference-count":12,"publisher":"The Angle Orthodontist (EH Angle Education & Research Foundation)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2010,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n        <jats:p>\n          <jats:bold>Objectives:<\/jats:bold> To test the hypothesis that there is no correlation in the interrelationships of skeletal and soft tissue points A and B with anterior teeth retraction.<\/jats:p>\n        <jats:p>\n          <jats:bold>Materials and Methods:<\/jats:bold> Thirty adult Class I bimaxillary protrusion patients treated with preadjusted appliances after first premolar extraction were included. Pretreatment and posttreatment variables were compared using paired <jats:italic>t<\/jats:italic>-test, and the relationship of soft and hard tissue variables was studied using Pearson correlation coefficient and linear regression equation.<\/jats:p>\n        <jats:p>\n          <jats:bold>Results:<\/jats:bold> Mean point A and soft tissue point A (sA) were retracted 2.7 mm (<jats:italic>P<\/jats:italic> &lt; .001) and 1.7 mm (<jats:italic>P<\/jats:italic> &lt; .001), and mean point B and soft tissue point B (sB) were retracted 2.1 mm (<jats:italic>P<\/jats:italic> &lt; .001) and 1.2 mm (<jats:italic>P<\/jats:italic> &lt; .001), respectively. Mean ratio of retraction of point A with sA and point B with sB was 1.5\u22361 and 1.7\u22361, respectively. A significant degree of correlation existed between retraction of point A and soft tissue point A (<jats:italic>r<\/jats:italic> \u200a=\u200a 0.648, <jats:italic>P<\/jats:italic> &lt; .01) and point B and soft tissue point B (<jats:italic>r<\/jats:italic> \u200a=\u200a 0.806, <jats:italic>P<\/jats:italic> &lt; .01). Linear regression analysis used to predict the changes in sA and sB showed significant relationship between point A and sA (<jats:italic>r<\/jats:italic> \u200a=\u200a 0.543, F \u200a=\u200a 11.7, <jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup> \u200a=\u200a 0.29, <jats:italic>P<\/jats:italic> &lt; .001) and point B and sB (<jats:italic>r<\/jats:italic> \u200a=\u200a 0.825, F \u200a=\u200a 59.7, <jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup> \u200a=\u200a 0.68, <jats:italic>P<\/jats:italic> &lt; .001). Decreases in hard and soft tissue convexity were due to the retraction of the skeletal and soft tissue points A and B in addition to the lips retraction.<\/jats:p>\n        <jats:p>\n          <jats:bold>Conclusions:<\/jats:bold> The hypothesis is rejected. Retraction of skeletal point A and B lead to retraction of sA and sB under controlled root positions. Nearly proportionate changes existed in the skeletal points and overlying corresponding soft tissue points.<\/jats:p>","DOI":"10.2319\/010409-6.1","type":"journal-article","created":{"date-parts":[[2009,10,15]],"date-time":"2009-10-15T01:00:59Z","timestamp":1255568459000},"page":"91-96","source":"Crossref","is-referenced-by-count":25,"title":["Skeletal and Soft Tissue Point A and B Changes Following Orthodontic Treatment of Nepalese Class I Bimaxillary Protrusive Patients"],"prefix":"10.2319","volume":"80","author":[{"given":"Jagan Nath","family":"Sharma","sequence":"first","affiliation":[{"name":"Associate Professor, Department of Orthodontics, College of Dental Surgery, B.P. Koirala Institute of Health Sciences, Dharan, Nepal"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1164","reference":[{"key":"i0003-3219-80-1-91-b01","series-title":"Angle Orthod","first-page":"333","article-title":"Bimaxillary protrusion: traits and orthodontic correction.","volume":"75","author":"Bills, D. A.","year":"2005","unstructured":"Bills, D. A., C. S.Handelman, and E. A.BeGole. Bimaxillary protrusion: traits and orthodontic correction.Angle Orthod2005. 75:333\u2013339."},{"key":"i0003-3219-80-1-91-b02","series-title":"Angle Orthod","first-page":"285","article-title":"Changes in soft tissue profile of African-Americans following extraction treatment.","volume":"65","author":"Diels, R. M.","year":"1995","unstructured":"Diels, R. M., V.Kalra, N.Deloach, M.Powers, and S.Nelson. Changes in soft tissue profile of African-Americans following extraction treatment.Angle Orthod1995. 65:285\u2013292."},{"key":"i0003-3219-80-1-91-b03","series-title":"Am J Orthod","first-page":"1","article-title":"A soft tissue cephalometric analysis and its use in orthodontic treatment planning. Part I.","volume":"84","author":"Holdaway, R. A.","year":"1983","unstructured":"Holdaway, R. A.\n          \n          A soft tissue cephalometric analysis and its use in orthodontic treatment planning. Part I.\n          Am J Orthod\n          1983. 84:1\u201328."},{"key":"i0003-3219-80-1-91-b04","series-title":"Am J Orthod","first-page":"330","article-title":"Foundation for Cephalometric Communication.","volume":"46","author":"Ricketts, R. M.","year":"1960","unstructured":"Ricketts, R. M.\n          \n          Foundation for Cephalometric Communication.\n          Am J Orthod\n          1960. 46:330\u2013357."},{"key":"i0003-3219-80-1-91-b05","series-title":"Am J Orthod","first-page":"262","article-title":"Lip posture and its significance in treatment planning.","volume":"53","author":"Burstone, C. J.","year":"1967","unstructured":"Burstone, C. J.\n          \n          Lip posture and its significance in treatment planning.\n          Am J Orthod\n          1967. 53:262\u2013284."},{"key":"i0003-3219-80-1-91-b06","series-title":"Am J Orthod","first-page":"103","article-title":"An analysis of dentofacial relationships.","volume":"43","author":"Reidel, R. A.","year":"1957","unstructured":"Reidel, R. A.\n          \n          An analysis of dentofacial relationships.\n          Am J Orthod\n          1957. 43:103\u2013119."},{"key":"i0003-3219-80-1-91-b07","series-title":"Am J Orthod","first-page":"481","article-title":"A longitudinal study of soft tissue facial structures and their profile characteristics, defined in relation to underlying skeletal structure.","volume":"45","author":"Subtelny, J. D.","year":"1959","unstructured":"Subtelny, J. D.\n          \n          A longitudinal study of soft tissue facial structures and their profile characteristics, defined in relation to underlying skeletal structure.\n          Am J Orthod\n          1959. 45:481\u2013507."},{"key":"i0003-3219-80-1-91-b08","series-title":"Am J Orthod","first-page":"371","article-title":"Perioral profile changes in orthodontic treatment.","volume":"47","author":"Bloom, L. A.","year":"1961","unstructured":"Bloom, L. A.\n          \n          Perioral profile changes in orthodontic treatment.\n          Am J Orthod\n          1961. 47:371\u2013379."},{"key":"i0003-3219-80-1-91-b09","series-title":"Biometrics","first-page":"255","article-title":"A concordance correlation coefficient to evaluate reproducibility.","volume":"45","author":"Lin, L. I.","year":"1989","unstructured":"Lin, L. I.\n          \n          A concordance correlation coefficient to evaluate reproducibility.\n          Biometrics\n          1989. 45:255\u2013268."},{"key":"i0003-3219-80-1-91-b10","series-title":"Am J Orthod","first-page":"416","article-title":"Relationships between changes in skeletal and integumental points A and B following orthodontic treatment.","volume":"79","author":"LaMastra, S. J.","year":"1981","unstructured":"LaMastra, S. J.\n          \n          Relationships between changes in skeletal and integumental points A and B following orthodontic treatment.\n          Am J Orthod\n          1981. 79:416\u2013423."},{"key":"i0003-3219-80-1-91-b11","series-title":"Am J Orthod","first-page":"165","article-title":"Soft tissue profile changes in Class II treatment.","volume":"72","author":"Roos, N.","year":"1977","unstructured":"Roos, N.\n          \n          Soft tissue profile changes in Class II treatment.\n          Am J Orthod\n          1977. 72:165\u2013175."},{"key":"i0003-3219-80-1-91-b12","series-title":"Am J Orthod Dentofacial Orthop","first-page":"208","article-title":"Labial root torque: effect on the maxilla and incisor root apex.","volume":"95","author":"Goldin, B.","year":"1989","unstructured":"Goldin, B.\n          \n          Labial root torque: effect on the maxilla and incisor root apex.\n          Am J Orthod Dentofacial Orthop\n          1989. 95:208\u2013219."}],"container-title":["The Angle Orthodontist"],"original-title":[],"link":[{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/view\/journals\/angl\/80\/1\/article-p91.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/downloadpdf\/journals\/angl\/80\/1\/article-p91.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/downloadpdf\/journals\/angl\/80\/1\/article-p91.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,5,16]],"date-time":"2025-05-16T00:51:03Z","timestamp":1747356663000},"score":1,"resource":{"primary":{"URL":"https:\/\/angle-orthodontist.kglmeridian.com\/view\/journals\/angl\/80\/1\/article-p91.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010,1]]},"references-count":12,"journal-issue":{"issue":"1"},"URL":"https:\/\/doi.org\/10.2319\/010409-6.1","relation":{},"ISSN":["0003-3219","1945-7103"],"issn-type":[{"value":"0003-3219","type":"print"},{"value":"1945-7103","type":"electronic"}],"subject":[],"published":{"date-parts":[[2010,1]]}}}