{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T20:46:44Z","timestamp":1791838004781,"version":"4.3.4"},"reference-count":40,"publisher":"The Angle Orthodontist (EH Angle Education & Research Foundation)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,11]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec id=\"st1\">\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>The primary objective was to compare the success and survival rates of palatal and buccal mini-implants for different locations and treatment requirements. The secondary objective was to evaluate risk factors influencing the survival of mini-implants.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"st2\">\n                    <jats:title>Materials and Methods<\/jats:title>\n                    <jats:p>In this retrospective cohort, records of 127 orthodontic patients with 257 mini-implants were included after imposing inclusion\/exclusion criteria. Along with the implant failure data, factors such as age, sex, transverse location, anteroposterior location, and purpose of mini-implants were recorded. Kaplan\u2013Meier survival analysis was used to draw the curves and a Nathan Mantel-David Cox test to compare variables.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"st3\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      The failure rate of palatal mini-implants was 8.5%, whereas the failure rate for buccal shelf mini-implants was 68.7% (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .0001). A significant difference was that the survival rates of palatal mini-implants were dependent on the purpose of the mini-implants and, for the buccal mini-implants, they were dependent on the skeletal malocclusion and location type of mini-implants (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"st4\">\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>The overall survival rate of palatal mini-implants was high, at 91.5%. Of the buccal mini-implants, inter-radicular mini-implants had the highest survival rate for 12 (75.5%) and 24 (71.9%) months, while buccal shelf mini-implants had the lowest success and survival rates for 12 (31.3%) and 24 (20.8%) months. Class III malocclusion had the lowest survival rate for the buccal mini-implants (65.3% and 54.2%) for 12 and 24 months.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2319\/090720-777.1","type":"journal-article","created":{"date-parts":[[2021,5,18]],"date-time":"2021-05-18T13:50:38Z","timestamp":1621345838000},"page":"756-763","source":"Crossref","is-referenced-by-count":63,"title":["Survival estimates and risk factors for failure of palatal and buccal mini-implants"],"prefix":"10.2319","volume":"91","author":[{"given":"Sarah Abu","family":"Arqub","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vaibhav","family":"Gandhi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shivam","family":"Mehta","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ledjo","family":"Palo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Madhur","family":"Upadhyay","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sumit","family":"Yadav","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1164","reference":[{"key":"i0003-3219-91-6-756-b01","series-title":"Contemporary Orthodontics. 4th ed","author":"Proffit","year":"2007","unstructured":"Proffit\n              WR.\n            \n          \n          \n            Contemporary Orthodontics. 4th ed.\n\t\t\t\t\tSt. Louis, MO:\n\t\t\t\t\tMosby;2007."},{"key":"i0003-3219-91-6-756-b02","series-title":"Am J Orthod Dentofacial Orthop","first-page":"558","article-title":"Temporary skeletal anchorage devices: the case for miniscrews","volume":"145","author":"Baumgaertel","year":"2014","unstructured":"Baumgaertel\n              S.\n            \n          \n          Temporary skeletal anchorage devices: the case for miniscrews.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t2014;\n\t\t\t\t\t145:\n\t\t\t\t\t558\u2013\n\t\t\t\t\t564."},{"key":"i0003-3219-91-6-756-b03","series-title":"Int J Oral Maxillofac Surg","first-page":"1427","article-title":"Bone anchor systems for orthodontic application: a systematic review","volume":"41","author":"Tsui","year":"2012","unstructured":"Tsui\n              WK,\n            \n            \n              Chua\n              HD,\n            \n            \n              Cheung\n              LK.\n            \n   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mini-implants","volume":"67","author":"Wilmes","year":"2006","unstructured":"Wilmes\n              B,\n            \n            \n              Rademacher\n              C,\n            \n            \n              Olthoff\n              G,\n            \n            \n              Drescher\n              D.\n            \n          \n          Parameters affecting primary stability of orthodontic mini-implants.\n\t\t\t\t\tJ Orofac Orthop.\n\t\t\t\t\t2006;\n\t\t\t\t\t67:\n\t\t\t\t\t162\u2013\n\t\t\t\t\t174."},{"key":"i0003-3219-91-6-756-b07","series-title":"Angle Orthod","first-page":"994","article-title":"Stability changes of miniscrew implants over time","volume":"81","author":"Ure","year":"2011","unstructured":"Ure\n              DS,\n            \n            \n              Oliver\n              DR,\n            \n            \n              Kim\n              KB,\n            \n            \n              Melo\n              AC,\n            \n            \n              Buschang\n              PH.\n            \n          \n          Stability changes of miniscrew implants over time.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t2011;\n\t\t\t\t\t81:\n\t\t\t\t\t994\u2013\n\t\t\t\t\t1000."},{"key":"i0003-3219-91-6-756-b08","series-title":"J Orofac Orthop","first-page":"450","article-title":"Mini- and micro-screws for temporary skeletal anchorage in orthodontic therapy","volume":"67","author":"Berens","year":"2006","unstructured":"Berens\n              A,\n            \n            \n              Wiechmann\n              D,\n            \n            \n              Dempf\n              R.\n            \n          \n          Mini- and micro-screws for temporary skeletal anchorage in orthodontic therapy.\n\t\t\t\t\tJ Orofac Orthop.\n\t\t\t\t\t2006;\n\t\t\t\t\t67:\n\t\t\t\t\t450\u2013\n\t\t\t\t\t458."},{"key":"i0003-3219-91-6-756-b09","series-title":"Am J Orthod Dentofacial Orthop","first-page":"373","article-title":"Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage","volume":"124","author":"Miyawaki","year":"2003","unstructured":"Miyawaki\n              S,\n            \n            \n              Koyama\n              I,\n            \n            \n              Inoue\n              M,\n            \n            \n              Mishima\n              K,\n            \n            \n              Sugahara\n              T,\n            \n            \n              Takano-Yamamoto\n              T.\n            \n          \n          Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t2003;\n\t\t\t\t\t124:\n\t\t\t\t\t373\u2013\n\t\t\t\t\t378."},{"key":"i0003-3219-91-6-756-b10","series-title":"Angle Orthod","first-page":"129","article-title":"Lever-arm and mini-implant system for anterior torque control during retraction in lingual orthodontic treatment","volume":"75","author":"Hong","year":"2005","unstructured":"Hong\n              RK,\n            \n            \n              Heo\n              JM,\n            \n            \n              Ha\n              YK.\n            \n          \n          Lever-arm and mini-implant system for anterior torque control during retraction in lingual orthodontic treatment.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t2005;\n\t\t\t\t\t75:\n\t\t\t\t\t129\u2013\n\t\t\t\t\t141."},{"key":"i0003-3219-91-6-756-b11","series-title":"Am J Orthod Dentofacial Orthop","first-page":"18","article-title":"Treatment effects of mini-implants for en-masse retraction of anterior teeth in bialveolar dental protrusion patients: a randomized controlled trial","volume":"134","author":"Upadhyay","year":"2008","unstructured":"Upadhyay\n              M,\n            \n            \n              Yadav\n              S,\n            \n            \n              Nagaraj\n              K,\n            \n            \n     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Orthod.\n\t\t\t\t\t2018;\n\t\t\t\t\t40:\n\t\t\t\t\t519\u2013\n\t\t\t\t\t530."},{"key":"i0003-3219-91-6-756-b13","series-title":"Head Face Med","first-page":"14","article-title":"Influence of interradicular and palatal placement of orthodontic mini-implants on the success (survival) rate","volume":"13","author":"Hourfar","year":"2017","unstructured":"Hourfar\n              J,\n            \n            \n              Bister\n              D,\n            \n            \n              Kanavakis\n              G,\n            \n            \n              Lisson\n              JA,\n            \n            \n              Ludwig\n              B.\n            \n          \n          Influence of interradicular and palatal placement of orthodontic mini-implants on the success (survival) rate.\n\t\t\t\t\tHead Face Med.\n\t\t\t\t\t2017;\n\t\t\t\t\t13:\n\t\t\t\t\t14."},{"issue":"(1)","key":"i0003-3219-91-6-756-b14","series-title":"Prog Orthod","first-page":"43","article-title":"Gender and growth variation in palatal bone thickness and density for mini-implant placement","volume":"19","author":"Yadav","year":"2018","unstructured":"Yadav\n              S,\n            \n            \n              Sachs\n              E,\n            \n            \n              Vishwanath\n              M,\n            \n            et al.\n          \n          Gender and growth variation in palatal bone thickness and density for mini-implant placement.\n\t\t\t\t\tProg Orthod.\n\t\t\t\t\t2018;\n\t\t\t\t\t19(1):\n\t\t\t\t\t43."},{"key":"i0003-3219-91-6-756-b15","series-title":"Biomed Eng Online","first-page":"128","article-title":"Evaluation of mechanical properties of three different screws for rapid maxillary expansion","volume":"12","author":"Camporesi","year":"2013","unstructured":"Camporesi\n              M,\n            \n            \n              Franchi\n              L,\n            \n            \n              Doldo\n              T,\n            \n            \n            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anchorage.\n\t\t\t\t\tClin Oral Implants Res.\n\t\t\t\t\t2005;\n\t\t\t\t\t16:\n\t\t\t\t\t473\u2013\n\t\t\t\t\t479."},{"key":"i0003-3219-91-6-756-b17","series-title":"Am J Orthod Dentofacial Orthop","first-page":"114","article-title":"Clinical observations and success rates of palatal implants","volume":"137","author":"Asscherickx","year":"2010","unstructured":"Asscherickx\n              K,\n            \n            \n              Vannet\n              BV,\n            \n            \n              Bottenberg\n              P,\n            \n            \n              Wehrbein\n              H,\n            \n            \n              Sabzevar\n              MM.\n            \n          \n          Clinical observations and success rates of palatal implants.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t2010;\n\t\t\t\t\t137:\n\t\t\t\t\t114\u2013\n\t\t\t\t\t122."},{"key":"i0003-3219-91-6-756-b18","series-title":"Eur J Orthod","first-page":"388","article-title":"Factors influencing the stability of miniscrews. A retrospective study on 300 miniscrews","volume":"33","author":"Manni","year":"2011","unstructured":"Manni\n              A,\n            \n            \n              Cozzani\n              M,\n            \n            \n              Tamborrino\n              F,\n            \n            \n              De Rinaldis\n              S,\n            \n            \n              Menini\n              A.\n            \n          \n          Factors influencing the stability of miniscrews. A retrospective study on 300 miniscrews.\n\t\t\t\t\tEur J Orthod.\n\t\t\t\t\t2011;\n\t\t\t\t\t33:\n\t\t\t\t\t388\u2013\n\t\t\t\t\t395."},{"key":"i0003-3219-91-6-756-b19","series-title":"J Oral Sci","first-page":"515","article-title":"A prospective study of factors associated with orthodontic mini-implant survival","volume":"58","author":"Tsai","year":"2016","unstructured":"Tsai\n              CC,\n            \n            \n              Chang\n              HP,\n            \n            \n              Pan\n              CY,\n            \n            \n              Chou\n              ST,\n            \n            \n              Tseng\n              YC.\n            \n          \n          A prospective study of factors associated with orthodontic mini-implant survival.\n\t\t\t\t\tJ Oral Sci.\n\t\t\t\t\t2016;\n\t\t\t\t\t58:\n\t\t\t\t\t515\u2013\n\t\t\t\t\t521."},{"key":"i0003-3219-91-6-756-b20","series-title":"Am J Orthod Dentofacial Orthop","first-page":"577","article-title":"Failure rates and associated risk factors of orthodontic miniscrew implants: a meta-analysis","volume":"142","author":"Papageorgiou","year":"2012","unstructured":"Papageorgiou\n              SN,\n            \n            \n              Zogakis\n              IP,\n            \n            \n              Papadopoulos\n              MA.\n            \n          \n          Failure rates and associated risk factors of orthodontic miniscrew implants: a meta-analysis.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t2012;\n\t\t\t\t\t142:\n\t\t\t\t\t577\u2013\n\t\t\t\t\t595.e7."},{"key":"i0003-3219-91-6-756-b01","series-title":"Contemporary Orthodontics. 4th ed","author":"Proffit","year":"2007","unstructured":"Proffit\n              WR.\n            \n          \n          \n            Contemporary Orthodontics. 4th ed.\n\t\t\t\t\tSt. Louis, MO:\n\t\t\t\t\tMosby;2007."},{"key":"i0003-3219-91-6-756-b02","series-title":"Am J Orthod Dentofacial Orthop","first-page":"558","article-title":"Temporary skeletal anchorage devices: the case for miniscrews","volume":"145","author":"Baumgaertel","year":"2014","unstructured":"Baumgaertel\n              S.\n            \n          \n          Temporary skeletal anchorage devices: the case for miniscrews.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t2014;\n\t\t\t\t\t145:\n\t\t\t\t\t558\u2013\n\t\t\t\t\t564."},{"key":"i0003-3219-91-6-756-b03","series-title":"Int J Oral Maxillofac Surg","first-page":"1427","article-title":"Bone anchor systems for orthodontic application: a systematic review","volume":"41","author":"Tsui","year":"2012","unstructured":"Tsui\n              WK,\n            \n            \n              Chua\n              HD,\n            \n            \n              Cheung\n              LK.\n            \n          \n          Bone anchor systems for orthodontic application: a systematic review.\n\t\t\t\t\tInt J Oral Maxillofac Surg.\n\t\t\t\t\t2012;\n\t\t\t\t\t41:\n\t\t\t\t\t1427\u2013\n\t\t\t\t\t1438."},{"key":"i0003-3219-91-6-756-b04","series-title":"Am J Orthod Dentofac Orthop","first-page":"108","article-title":"Miniscrews in orthodontic treatment: review and analysis of published clinical trials","volume":"137","author":"Crismani","year":"2010","unstructured":"Crismani\n              AG,\n            \n            \n              Bertl\n              MH,\n            \n            \n              Celar\n              AG,\n            \n            \n              Bantleon\n              HP,\n            \n            \n              Burstone\n              CJ.\n            \n          \n          Miniscrews in orthodontic treatment: review and analysis of published clinical trials.\n\t\t\t\t\tAm J Orthod Dentofac Orthop.\n\t\t\t\t\t2010;\n\t\t\t\t\t137:\n\t\t\t\t\t108\u2013\n\t\t\t\t\t113."},{"key":"i0003-3219-91-6-756-b05","series-title":"Clin Oral Implants 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         C,\n            \n            \n              Olthoff\n              G,\n            \n            \n              Drescher\n              D.\n            \n          \n          Parameters affecting primary stability of orthodontic mini-implants.\n\t\t\t\t\tJ Orofac Orthop.\n\t\t\t\t\t2006;\n\t\t\t\t\t67:\n\t\t\t\t\t162\u2013\n\t\t\t\t\t174."},{"key":"i0003-3219-91-6-756-b07","series-title":"Angle Orthod","first-page":"994","article-title":"Stability changes of miniscrew implants over time","volume":"81","author":"Ure","year":"2011","unstructured":"Ure\n              DS,\n            \n            \n              Oliver\n              DR,\n            \n            \n              Kim\n              KB,\n            \n            \n              Melo\n              AC,\n            \n            \n              Buschang\n              PH.\n            \n          \n          Stability changes of miniscrew implants over time.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t2011;\n\t\t\t\t\t81:\n\t\t\t\t\t994\u2013\n\t\t\t\t\t1000."},{"key":"i0003-3219-91-6-756-b08","series-title":"J Orofac Orthop","first-page":"450","article-title":"Mini- and micro-screws for temporary skeletal anchorage in orthodontic therapy","volume":"67","author":"Berens","year":"2006","unstructured":"Berens\n              A,\n            \n            \n              Wiechmann\n              D,\n            \n            \n              Dempf\n              R.\n            \n          \n          Mini- and micro-screws for temporary skeletal anchorage in orthodontic therapy.\n\t\t\t\t\tJ Orofac Orthop.\n\t\t\t\t\t2006;\n\t\t\t\t\t67:\n\t\t\t\t\t450\u2013\n\t\t\t\t\t458."},{"key":"i0003-3219-91-6-756-b09","series-title":"Am J Orthod Dentofacial Orthop","first-page":"373","article-title":"Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage","volume":"124","author":"Miyawaki","year":"2003","unstructured":"Miyawaki\n              S,\n            \n            \n              Koyama\n              I,\n            \n            \n              Inoue\n              M,\n            \n            \n              Mishima\n              K,\n            \n            \n              Sugahara\n              T,\n            \n            \n              Takano-Yamamoto\n              T.\n            \n          \n          Factors associated with the stability of titanium screws placed in the posterior region for orthodontic anchorage.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t2003;\n\t\t\t\t\t124:\n\t\t\t\t\t373\u2013\n\t\t\t\t\t378."},{"key":"i0003-3219-91-6-756-b10","series-title":"Angle Orthod","first-page":"129","article-title":"Lever-arm and mini-implant system for anterior torque control during retraction in lingual orthodontic treatment","volume":"75","author":"Hong","year":"2005","unstructured":"Hong\n              RK,\n            \n            \n              Heo\n              JM,\n            \n            \n              Ha\n              YK.\n            \n          \n          Lever-arm and mini-implant system for anterior torque control during retraction in lingual orthodontic treatment.\n\t\t\t\t\tAngle Orthod.\n\t\t\t\t\t2005;\n\t\t\t\t\t75:\n\t\t\t\t\t129\u2013\n\t\t\t\t\t141."},{"key":"i0003-3219-91-6-756-b11","series-title":"Am J Orthod Dentofacial Orthop","first-page":"18","article-title":"Treatment effects of mini-implants for en-masse retraction of anterior teeth in bialveolar dental protrusion patients: a randomized controlled trial","volume":"134","author":"Upadhyay","year":"2008","unstructured":"Upadhyay\n              M,\n            \n            \n              Yadav\n              S,\n            \n            \n              Nagaraj\n              K,\n            \n            \n              Patil\n              S.\n            \n          \n          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interradicular and palatal placement of orthodontic mini-implants on the success (survival) rate","volume":"13","author":"Hourfar","year":"2017","unstructured":"Hourfar\n              J,\n            \n            \n              Bister\n              D,\n            \n            \n              Kanavakis\n              G,\n            \n            \n              Lisson\n              JA,\n            \n            \n              Ludwig\n              B.\n            \n          \n          Influence of interradicular and palatal placement of orthodontic mini-implants on the success (survival) rate.\n\t\t\t\t\tHead Face Med.\n\t\t\t\t\t2017;\n\t\t\t\t\t13:\n\t\t\t\t\t14."},{"issue":"(1)","key":"i0003-3219-91-6-756-b14","series-title":"Prog Orthod","first-page":"43","article-title":"Gender and growth variation in palatal bone thickness and density for mini-implant placement","volume":"19","author":"Yadav","year":"2018","unstructured":"Yadav\n              S,\n            \n          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Online.\n\t\t\t\t\t2013;\n\t\t\t\t\t12:\n\t\t\t\t\t128."},{"key":"i0003-3219-91-6-756-b16","series-title":"Clin Oral Implants Res","first-page":"473","article-title":"Load-related implant reaction of mini-implants used for orthodontic anchorage","volume":"16","author":"B\u00fcchter","year":"2005","unstructured":"B\u00fcchter\n              A,\n            \n            \n              Wiechmann\n              D,\n            \n            \n              Koerdt\n              S,\n            \n            \n              Wiesmann\n              HP,\n            \n            \n              Piffko\n              J,\n            \n            \n              Meyer\n              U.\n            \n          \n          Load-related implant reaction of mini-implants used for orthodontic anchorage.\n\t\t\t\t\tClin Oral Implants Res.\n\t\t\t\t\t2005;\n\t\t\t\t\t16:\n\t\t\t\t\t473\u2013\n\t\t\t\t\t479."},{"key":"i0003-3219-91-6-756-b17","series-title":"Am J Orthod Dentofacial Orthop","first-page":"114","article-title":"Clinical observations and success rates of palatal implants","volume":"137","author":"Asscherickx","year":"2010","unstructured":"Asscherickx\n              K,\n            \n            \n              Vannet\n              BV,\n            \n            \n              Bottenberg\n              P,\n            \n            \n              Wehrbein\n              H,\n            \n            \n              Sabzevar\n              MM.\n            \n          \n          Clinical observations and success rates of palatal implants.\n\t\t\t\t\tAm J Orthod Dentofacial Orthop.\n\t\t\t\t\t2010;\n\t\t\t\t\t137:\n\t\t\t\t\t114\u2013\n\t\t\t\t\t122."},{"key":"i0003-3219-91-6-756-b18","series-title":"Eur J Orthod","first-page":"388","article-title":"Factors influencing the stability of miniscrews. A retrospective study on 300 miniscrews","volume":"33","author":"Manni","year":"2011","unstructured":"Manni\n              A,\n            \n            \n              Cozzani\n              M,\n            \n            \n              Tamborrino\n              F,\n            \n            \n              De Rinaldis\n              S,\n            \n            \n              Menini\n              A.\n            \n          \n          Factors influencing the stability of miniscrews. 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