{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T18:29:27Z","timestamp":1792607367401,"version":"4.5.0"},"reference-count":44,"publisher":"The Angle Orthodontist (EH Angle Education & Research Foundation)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,9]]},"abstract":"ABSTRACT<\/jats:title>\n \n Objectives<\/jats:title>\n To evaluate the stability of maxillary interincisor diastema closure and the relationship between space relapse and interincisor diastema width, overjet, overbite, angulations between adjacent maxillary anterior teeth and presence of intermaxillary osseous cleft after orthodontic treatment with extractions.<\/jats:p>\n <\/jats:sec>\n \n Materials and Methods<\/jats:title>\n \n Twenty-four individuals with a maxillary interincisor diastema pretreatment, treated with maxillary first premolar extractions were evaluated. Dental casts and panoramic radiographs taken at pretreatment (T1), posttreatment (T2), and posttreatment follow-up (T3) were assessed. Periapical radiographs at T1 and T2 were also evaluated. Diastema relapse was assumed when T3-T2 interincisor space change was greater than zero. Diastema relapse was considered clinically significant when it was at least 0.50 mm. Data were analyzed using repeated-measures analysis of variance followed by post hoc Tukey tests or Friedman followed by Wilcoxon tests.\n T<\/jats:italic>\n -test or Mann-Whitney\n U<\/jats:italic>\n -test, Pearson correlation coefficient, and multiple linear regression analyses were also performed.\n <\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n No statistically significant relapse of maxillary interincisor diastemas was found. The percentage of clinically significant relapse of the maxillary interincisor diastemas was 27.78%. Specifically, for the interincisor midline diastema, it was 8.33%.<\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n Maxillary interincisor diastema closure showed no statistically significant relapse after orthodontic treatment with premolar extractions. Clinically significant stability for maxillary interincisor diastema closure was 72.22% and, specifically, for interincisor midline diastema closure, it was 91.67%.<\/jats:p>\n <\/jats:sec>","DOI":"10.2319\/080619-516","type":"journal-article","created":{"date-parts":[[2020,5,22]],"date-time":"2020-05-22T20:13:59Z","timestamp":1590178439000},"page":"627-633","source":"Crossref","is-referenced-by-count":6,"title":["Stability of maxillary interincisor diastema closure after extraction orthodontic treatment"],"prefix":"10.2319","volume":"90","author":[{"given":"Marcos J.","family":"Carruitero","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aron","family":"Aliaga-Del Castillo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniela","family":"Garib","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guilherme","family":"Janson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1164","reference":[{"key":"i0003-3219-90-5-627-b01","series-title":"Angle Orthod","first-page":"831","article-title":"Influence of anterior occlusal characteristics on self-perceived dental appearance in young adults","volume":"77","author":"Bernabe","year":"2007","unstructured":"Bernabe\n E,\n \n \n Flores-Mir\n C.\n \n \n Influence of anterior occlusal characteristics on self-perceived dental appearance in young adults.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t2007;\n\t\t\t\t\t77:\n\t\t\t\t\t831\u2013\n\t\t\t\t\t836."},{"key":"i0003-3219-90-5-627-b02","series-title":"J Prosthet Dent","first-page":"91","article-title":"Esthetic and functional restoration for an anterior open occlusal relationship with multiple diastemata: a multidisciplinary approach","volume":"99","author":"Furuse","year":"2008","unstructured":"Furuse\n AY,\n \n \n Franco\n EJ,\n \n \n Mondelli\n J.\n \n \n Esthetic and functional restoration for an anterior open occlusal relationship with multiple diastemata: a multidisciplinary approach.\n\t\t\t\t\tJ Prosthet Dent.\n\t\t\t\t\t2008;\n\t\t\t\t\t99:\n\t\t\t\t\t91\u2013\n\t\t\t\t\t94."},{"key":"i0003-3219-90-5-627-b03","series-title":"J Am Dent Assoc","first-page":"925","article-title":"Laypeople's preferences regarding frontal dentofacial esthetics: periodontal factors","volume":"142","author":"Witt","year":"2011","unstructured":"Witt\n M,\n \n \n Flores-Mir\n C.\n \n \n Laypeople's preferences regarding frontal dentofacial esthetics: periodontal factors.\n\t\t\t\t\tJ Am Dent Assoc.\n\t\t\t\t\t2011;\n\t\t\t\t\t142:\n\t\t\t\t\t925\u2013\n\t\t\t\t\t937."},{"key":"i0003-3219-90-5-627-b04","series-title":"Eur J Paediatr Dent","first-page":"13","article-title":"Correlations between malocclusions and dyslalias","volume":"13","author":"Farronato","year":"2012","unstructured":"Farronato\n G,\n \n \n Giannini\n L,\n \n \n Riva\n R,\n \n \n Galbiati\n G,\n \n \n Maspero\n C.\n \n \n Correlations between malocclusions and dyslalias.\n\t\t\t\t\tEur J Paediatr Dent.\n\t\t\t\t\t2012;\n\t\t\t\t\t13:\n\t\t\t\t\t13\u2013\n\t\t\t\t\t18."},{"key":"i0003-3219-90-5-627-b05","series-title":"J Clin Pediatr Dent","first-page":"265","article-title":"Management of maxillary midline diastema with emphasis on etiology","volume":"32","author":"Gkantidis","year":"2008","unstructured":"Gkantidis\n N,\n \n \n Kolokitha\n OE,\n \n \n Topouzelis\n N.\n \n \n Management of maxillary midline diastema with emphasis on etiology.\n\t\t\t\t\tJ Clin Pediatr Dent.\n\t\t\t\t\t2008;\n\t\t\t\t\t32:\n\t\t\t\t\t265\u2013\n\t\t\t\t\t272."},{"key":"i0003-3219-90-5-627-b06","series-title":"Am J Orthod","first-page":"296","article-title":"The six keys to normal occlusion","volume":"62","author":"Andrews","year":"1972","unstructured":"Andrews\n LF.\n \n \n The six keys to normal occlusion.\n\t\t\t\t\tAm J Orthod.\n\t\t\t\t\t1972;\n\t\t\t\t\t62:\n\t\t\t\t\t296\u2013\n\t\t\t\t\t309."},{"key":"i0003-3219-90-5-627-b07","series-title":"Angle Orthod","first-page":"321","article-title":"Characteristics and stability of spaced dentition","volume":"55","author":"Steigman","year":"1985","unstructured":"Steigman\n S,\n \n \n Gershkovitz\n E,\n \n \n Harari\n D.\n \n \n Characteristics and stability of spaced dentition.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t1985;\n\t\t\t\t\t55:\n\t\t\t\t\t321\u2013\n\t\t\t\t\t328."},{"key":"i0003-3219-90-5-627-b08","series-title":"Angle Orthod","first-page":"257","article-title":"Relapse after orthodontic correction of maxillary median diastema: a follow-up evaluation of consecutive cases","volume":"69","author":"Shashua","year":"1999","unstructured":"Shashua\n D,\n \n \n Artun\n J.\n \n \n Relapse after orthodontic correction of maxillary median diastema: a follow-up evaluation of consecutive cases.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t1999;\n\t\t\t\t\t69:\n\t\t\t\t\t257\u2013\n\t\t\t\t\t263."},{"key":"i0003-3219-90-5-627-b09","series-title":"J Clin Orthod","first-page":"560","article-title":"Diastema closure and long-term stability","volume":"37","author":"Mulligan","year":"2003","unstructured":"Mulligan\n T.\n \n \n Diastema closure and long-term stability.\n\t\t\t\t\tJ Clin Orthod.\n\t\t\t\t\t2003;\n\t\t\t\t\t37:\n\t\t\t\t\t560\u2013\n\t\t\t\t\t574."},{"key":"i0003-3219-90-5-627-b10","series-title":"Am J Orthod","first-page":"489","article-title":"The diastema, the frenum, the frenectomy: a clinical study","volume":"71","author":"Edwards","year":"1977","unstructured":"Edwards\n JG.\n \n \n The diastema, the frenum, the frenectomy: a clinical study.\n\t\t\t\t\tAm J Orthod.\n\t\t\t\t\t1977;\n\t\t\t\t\t71:\n\t\t\t\t\t489\u2013\n\t\t\t\t\t508."},{"key":"i0003-3219-90-5-627-b11","series-title":"Angle Orthod","first-page":"131","article-title":"A postretention study of patients presenting with a maxillary median diastema","volume":"66","author":"Sullivan","year":"1996","unstructured":"Sullivan\n TC,\n \n \n Turpin\n DL,\n \n \n Artun\n J.\n \n \n A postretention study of patients presenting with a maxillary median diastema.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t1996;\n\t\t\t\t\t66:\n\t\t\t\t\t131\u2013\n\t\t\t\t\t138."},{"key":"i0003-3219-90-5-627-b12","series-title":"J Appl Oral Sci","first-page":"409","article-title":"Castello Branco N. Postretention stability after orthodontic closure of maxillary interincisor diastemas","volume":"22","author":"de Morais","year":"2014","unstructured":"de Morais\n JF,\n \n \n de Freitas\n MR,\n \n \n de Freitas\n KMS,\n \n \n Janson\n G,\n \n \n Castello Branco N. Postretention stability after orthodontic closure of maxillary interincisor diastemas.\n\t\t\t\t\tJ Appl Oral Sci.\n\t\t\t\t\t2014;\n\t\t\t\t\t22:\n\t\t\t\t\t409\u2013\n\t\t\t\t\t415."},{"key":"i0003-3219-90-5-627-b13","series-title":"Eur J Orthod","first-page":"109","article-title":"Extractions, retention and stability: the search for orthodontic truth","volume":"39","author":"Peck","year":"2017","unstructured":"Peck\n S.\n \n \n Extractions, retention and stability: the search for orthodontic truth.\n\t\t\t\t\tEur J Orthod.\n\t\t\t\t\t2017;\n\t\t\t\t\t39:\n\t\t\t\t\t109\u2013\n\t\t\t\t\t115."},{"key":"i0003-3219-90-5-627-b14","series-title":"J Am Dent. Assoc","first-page":"9","article-title":"Koga da Silva EM, Iared W, Rufino Macedo C. Esthetic perception of changes in facial profile resulting from orthodontic treatment with extraction of premolars: a systematic review","volume":"148","author":"Iared","year":"2017","unstructured":"Iared\n W,\n \n \n Koga da Silva EM, Iared W, Rufino Macedo C. Esthetic perception of changes in facial profile resulting from orthodontic treatment with extraction of premolars: a systematic review.\n\t\t\t\t\tJ Am Dent. Assoc2017;\n\t\t\t\t\t148:\n\t\t\t\t\t9\u2013\n\t\t\t\t\t16."},{"key":"i0003-3219-90-5-627-b15","series-title":"Biometrics","first-page":"159","article-title":"The measurement of observer agreement for categorical data","volume":"33","author":"Landis","year":"1977","unstructured":"Landis\n JR,\n \n \n Koch\n GG.\n \n \n The measurement of observer agreement for categorical data.\n\t\t\t\t\tBiometrics.\n\t\t\t\t\t1977;\n\t\t\t\t\t33:\n\t\t\t\t\t159\u2013\n\t\t\t\t\t174."},{"key":"i0003-3219-90-5-627-b16","series-title":"Eur J Orthod","first-page":"11","article-title":"Residual extraction sites after orthodontic treatment. Part 1. At debanding","volume":"4","author":"Oftedal","year":"1982","unstructured":"Oftedal\n B,\n \n \n Wisth\n J.\n \n \n Residual extraction sites after orthodontic treatment. Part 1. At debanding.\n\t\t\t\t\tEur J Orthod.\n\t\t\t\t\t1982;\n\t\t\t\t\t4:\n\t\t\t\t\t11\u2013\n\t\t\t\t\t19."},{"key":"i0003-3219-90-5-627-b17","series-title":"Am J Orthod Dentofacial Orthop","first-page":"186","article-title":"Associations between initial, posttreatment, and postretention alignment of maxillary anterior teeth","volume":"113","author":"Surbeck","year":"1998","unstructured":"Surbeck\n BT,\n \n \n \u00c5rtun\n J,\n \n \n Hawkins\n NR,\n \n \n Leroux\n B.\n \n \n Associations between initial, posttreatment, and postretention alignment of maxillary anterior teeth.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t1998;\n\t\t\t\t\t113:\n\t\t\t\t\t186\u2013\n\t\t\t\t\t195."},{"key":"i0003-3219-90-5-627-b18","series-title":"Am J Orthod Dentofacial Orthop","first-page":"320","article-title":"Prevalence of extraction space reopening in different orthodontic treatment protocols","volume":"152","author":"Janson","year":"2017","unstructured":"Janson\n G,\n \n \n Valarelli\n DP,\n \n \n Rizzo\n M,\n \n \n Valarelli\n FP.\n \n \n Prevalence of extraction space reopening in different orthodontic treatment protocols.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t2017;\n\t\t\t\t\t152:\n\t\t\t\t\t320\u2013\n\t\t\t\t\t326."},{"key":"i0003-3219-90-5-627-b19","series-title":"Am J Orthod","first-page":"55","article-title":"Management of diastemas in orthodontics","volume":"61","author":"Bishara","year":"1972","unstructured":"Bishara\n SE.\n \n \n Management of diastemas in orthodontics.\n\t\t\t\t\tAm J Orthod.\n\t\t\t\t\t1972;\n\t\t\t\t\t61:\n\t\t\t\t\t55\u2013\n\t\t\t\t\t63."},{"key":"i0003-3219-90-5-627-b20","series-title":"Am J Orthod","first-page":"645","article-title":"The influence of transseptal fibers on incisor position and diastema formation","volume":"70","author":"Stubley","year":"1976","unstructured":"Stubley\n R.\n \n \n The influence of transseptal fibers on incisor position and diastema formation.\n\t\t\t\t\tAm J Orthod.\n\t\t\t\t\t1976;\n\t\t\t\t\t70:\n\t\t\t\t\t645\u2013\n\t\t\t\t\t662."},{"key":"i0003-3219-90-5-627-b21","series-title":"Am J Orthod Dentofacial Orthop","first-page":"67","article-title":"Overjet, overbite, and anterior crowding relapses in extraction and nonextraction patients, and their correlations","volume":"146","author":"Francisconi","year":"2014","unstructured":"Francisconi\n MF,\n \n \n Janson\n G,\n \n \n Freitas\n KM,\n \n \n Oliveira\n CB,\n \n \n Oliveira\n RCB,\n \n \n Freitas\n MR,\n \n et al.\n\t\t\t\t\t\n Overjet, overbite, and anterior crowding relapses in extraction and nonextraction patients, and their correlations.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t2014;\n\t\t\t\t\t146:\n\t\t\t\t\t67\u2013\n\t\t\t\t\t72."},{"key":"i0003-3219-90-5-627-b22","series-title":"Am J Orthod Dentofacial Orthop","first-page":"24","article-title":"Stability of extraction space closure","volume":"149","author":"Garib","year":"2016","unstructured":"Garib\n DG,\n \n \n Bressane\n LB,\n \n \n Janson\n G,\n \n \n Gribel\n BF.\n \n \n Stability of extraction space closure.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t2016;\n\t\t\t\t\t149:\n\t\t\t\t\t24\u2013\n\t\t\t\t\t30."},{"key":"i0003-3219-90-5-627-b01","series-title":"Angle Orthod","first-page":"831","article-title":"Influence of anterior occlusal characteristics on self-perceived dental appearance in young adults","volume":"77","author":"Bernabe","year":"2007","unstructured":"Bernabe\n E,\n \n \n Flores-Mir\n C.\n \n \n Influence of anterior occlusal characteristics on self-perceived dental appearance in young adults.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t2007;\n\t\t\t\t\t77:\n\t\t\t\t\t831\u2013\n\t\t\t\t\t836."},{"key":"i0003-3219-90-5-627-b02","series-title":"J Prosthet Dent","first-page":"91","article-title":"Esthetic and functional restoration for an anterior open occlusal relationship with multiple diastemata: a multidisciplinary approach","volume":"99","author":"Furuse","year":"2008","unstructured":"Furuse\n AY,\n \n \n Franco\n EJ,\n \n \n Mondelli\n J.\n \n \n Esthetic and functional restoration for an anterior open occlusal relationship with multiple diastemata: a multidisciplinary approach.\n\t\t\t\t\tJ Prosthet Dent.\n\t\t\t\t\t2008;\n\t\t\t\t\t99:\n\t\t\t\t\t91\u2013\n\t\t\t\t\t94."},{"key":"i0003-3219-90-5-627-b03","series-title":"J Am Dent Assoc","first-page":"925","article-title":"Laypeople's preferences regarding frontal dentofacial esthetics: periodontal factors","volume":"142","author":"Witt","year":"2011","unstructured":"Witt\n M,\n \n \n Flores-Mir\n C.\n \n \n Laypeople's preferences regarding frontal dentofacial esthetics: periodontal factors.\n\t\t\t\t\tJ Am Dent Assoc.\n\t\t\t\t\t2011;\n\t\t\t\t\t142:\n\t\t\t\t\t925\u2013\n\t\t\t\t\t937."},{"key":"i0003-3219-90-5-627-b04","series-title":"Eur J Paediatr Dent","first-page":"13","article-title":"Correlations between malocclusions and dyslalias","volume":"13","author":"Farronato","year":"2012","unstructured":"Farronato\n G,\n \n \n Giannini\n L,\n \n \n Riva\n R,\n \n \n Galbiati\n G,\n \n \n Maspero\n C.\n \n \n Correlations between malocclusions and dyslalias.\n\t\t\t\t\tEur J Paediatr Dent.\n\t\t\t\t\t2012;\n\t\t\t\t\t13:\n\t\t\t\t\t13\u2013\n\t\t\t\t\t18."},{"key":"i0003-3219-90-5-627-b05","series-title":"J Clin Pediatr Dent","first-page":"265","article-title":"Management of maxillary midline diastema with emphasis on etiology","volume":"32","author":"Gkantidis","year":"2008","unstructured":"Gkantidis\n N,\n \n \n Kolokitha\n OE,\n \n \n Topouzelis\n N.\n \n \n Management of maxillary midline diastema with emphasis on etiology.\n\t\t\t\t\tJ Clin Pediatr Dent.\n\t\t\t\t\t2008;\n\t\t\t\t\t32:\n\t\t\t\t\t265\u2013\n\t\t\t\t\t272."},{"key":"i0003-3219-90-5-627-b06","series-title":"Am J Orthod","first-page":"296","article-title":"The six keys to normal occlusion","volume":"62","author":"Andrews","year":"1972","unstructured":"Andrews\n LF.\n \n \n The six keys to normal occlusion.\n\t\t\t\t\tAm J Orthod.\n\t\t\t\t\t1972;\n\t\t\t\t\t62:\n\t\t\t\t\t296\u2013\n\t\t\t\t\t309."},{"key":"i0003-3219-90-5-627-b07","series-title":"Angle Orthod","first-page":"321","article-title":"Characteristics and stability of spaced dentition","volume":"55","author":"Steigman","year":"1985","unstructured":"Steigman\n S,\n \n \n Gershkovitz\n E,\n \n \n Harari\n D.\n \n \n Characteristics and stability of spaced dentition.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t1985;\n\t\t\t\t\t55:\n\t\t\t\t\t321\u2013\n\t\t\t\t\t328."},{"key":"i0003-3219-90-5-627-b08","series-title":"Angle Orthod","first-page":"257","article-title":"Relapse after orthodontic correction of maxillary median diastema: a follow-up evaluation of consecutive cases","volume":"69","author":"Shashua","year":"1999","unstructured":"Shashua\n D,\n \n \n Artun\n J.\n \n \n Relapse after orthodontic correction of maxillary median diastema: a follow-up evaluation of consecutive cases.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t1999;\n\t\t\t\t\t69:\n\t\t\t\t\t257\u2013\n\t\t\t\t\t263."},{"key":"i0003-3219-90-5-627-b09","series-title":"J Clin Orthod","first-page":"560","article-title":"Diastema closure and long-term stability","volume":"37","author":"Mulligan","year":"2003","unstructured":"Mulligan\n T.\n \n \n Diastema closure and long-term stability.\n\t\t\t\t\tJ Clin Orthod.\n\t\t\t\t\t2003;\n\t\t\t\t\t37:\n\t\t\t\t\t560\u2013\n\t\t\t\t\t574."},{"key":"i0003-3219-90-5-627-b10","series-title":"Am J Orthod","first-page":"489","article-title":"The diastema, the frenum, the frenectomy: a clinical study","volume":"71","author":"Edwards","year":"1977","unstructured":"Edwards\n JG.\n \n \n The diastema, the frenum, the frenectomy: a clinical study.\n\t\t\t\t\tAm J Orthod.\n\t\t\t\t\t1977;\n\t\t\t\t\t71:\n\t\t\t\t\t489\u2013\n\t\t\t\t\t508."},{"key":"i0003-3219-90-5-627-b11","series-title":"Angle Orthod","first-page":"131","article-title":"A postretention study of patients presenting with a maxillary median diastema","volume":"66","author":"Sullivan","year":"1996","unstructured":"Sullivan\n TC,\n \n \n Turpin\n DL,\n \n \n Artun\n J.\n \n \n A postretention study of patients presenting with a maxillary median diastema.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t1996;\n\t\t\t\t\t66:\n\t\t\t\t\t131\u2013\n\t\t\t\t\t138."},{"key":"i0003-3219-90-5-627-b12","series-title":"J Appl Oral Sci","first-page":"409","article-title":"Castello Branco N. Postretention stability after orthodontic closure of maxillary interincisor diastemas","volume":"22","author":"de Morais","year":"2014","unstructured":"de Morais\n JF,\n \n \n de Freitas\n MR,\n \n \n de Freitas\n KMS,\n \n \n Janson\n G,\n \n \n Castello Branco N. Postretention stability after orthodontic closure of maxillary interincisor diastemas.\n\t\t\t\t\tJ Appl Oral Sci.\n\t\t\t\t\t2014;\n\t\t\t\t\t22:\n\t\t\t\t\t409\u2013\n\t\t\t\t\t415."},{"key":"i0003-3219-90-5-627-b13","series-title":"Eur J Orthod","first-page":"109","article-title":"Extractions, retention and stability: the search for orthodontic truth","volume":"39","author":"Peck","year":"2017","unstructured":"Peck\n S.\n \n \n Extractions, retention and stability: the search for orthodontic truth.\n\t\t\t\t\tEur J Orthod.\n\t\t\t\t\t2017;\n\t\t\t\t\t39:\n\t\t\t\t\t109\u2013\n\t\t\t\t\t115."},{"key":"i0003-3219-90-5-627-b14","series-title":"J Am Dent. Assoc","first-page":"9","article-title":"Koga da Silva EM, Iared W, Rufino Macedo C. Esthetic perception of changes in facial profile resulting from orthodontic treatment with extraction of premolars: a systematic review","volume":"148","author":"Iared","year":"2017","unstructured":"Iared\n W,\n \n \n Koga da Silva EM, Iared W, Rufino Macedo C. Esthetic perception of changes in facial profile resulting from orthodontic treatment with extraction of premolars: a systematic review.\n\t\t\t\t\tJ Am Dent. Assoc2017;\n\t\t\t\t\t148:\n\t\t\t\t\t9\u2013\n\t\t\t\t\t16."},{"key":"i0003-3219-90-5-627-b15","series-title":"Biometrics","first-page":"159","article-title":"The measurement of observer agreement for categorical data","volume":"33","author":"Landis","year":"1977","unstructured":"Landis\n JR,\n \n \n Koch\n GG.\n \n \n The measurement of observer agreement for categorical data.\n\t\t\t\t\tBiometrics.\n\t\t\t\t\t1977;\n\t\t\t\t\t33:\n\t\t\t\t\t159\u2013\n\t\t\t\t\t174."},{"key":"i0003-3219-90-5-627-b16","series-title":"Eur J Orthod","first-page":"11","article-title":"Residual extraction sites after orthodontic treatment. Part 1. At debanding","volume":"4","author":"Oftedal","year":"1982","unstructured":"Oftedal\n B,\n \n \n Wisth\n J.\n \n \n Residual extraction sites after orthodontic treatment. Part 1. 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