{"id":22321,"date":"2016-03-08T00:00:00","date_gmt":"2016-03-08T00:00:00","guid":{"rendered":"https:\/\/sylvainchamberland.com\/sus2-correctors\/"},"modified":"2023-05-07T21:34:13","modified_gmt":"2023-05-07T21:34:13","slug":"sus2-correctors","status":"publish","type":"post","link":"https:\/\/www.sylvainchamberland.com\/en\/sus2-correctors\/","title":{"rendered":"SUS<sup>2<\/sup> correctors"},"content":{"rendered":"<h3><a name=\"Top\"><\/a><\/h3>\n<h2>SUS<sup>2<\/sup> is an acronym for Sabbagh Universal Spring.<\/h2>\n<p>The distributor of SUS<sup>2<\/sup> correctors is the <a title=\"Dentaurum SUS2\" href=\"http:\/\/www.dentaurum.de\/eng\/sus-12683.aspx\" target=\"_blank\" rel=\"noopener\">Dentaurum<\/a> company.<\/p>\n<div id=\"attachment_8669\" style=\"width: 341px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8669\" class=\" wp-image-8669\" title=\"SUS2 telescopic elements-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/Elements-telescopiques-SUS2-Spring-path-Chamberland-Orthodontiste-a-Quebec-2_eng.jpg\" alt=\"SUS2 telescopic elements-Dr Chamberland orthodontist in Quebec City\" width=\"331\" height=\"144\" \/><p id=\"caption-attachment-8669\" class=\"wp-caption-text\">SUS<sup>2<\/sup> telescopic elements.<\/p><\/div>\n<p>A <strong>SUS<sup>2<\/sup> corrector<\/strong> is made of a telescope rod that inserts into a guide tube. An inner spring ensures a compression force of 2.4 Newton (1 N = 110 g). An <strong>archwire adapter<\/strong> makes it possible to attach the corrector to the lower orthodontic archwire and an <strong>eye<\/strong> allows the appliance to be attached to a headgear tube on the bracket of the upper molar using an <strong>L ball pin<\/strong>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-8673\" title=\"SUS2 internal mechanism-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/Mecanisme-interne-du-SUS2-Chamberland-Orthodontiste-a-Quebec_eng.jpg\" alt=\"SUS2 internal mechanism-Dr Chamberland orthodontist in Quebec City\" width=\"298\" height=\"306\" \/>The <strong>central telescope rod<\/strong> has an activation amplitude of 6 mm from the inner spring and provides a force of 2.4 N at full compression. Deactivation of the inner spring is possible by unscrewing the hexagon socket screw. The inner spring will then have an activation amplitude of 2.1 mm and will then provide a force of 1 N (110 g) at full compression.<\/p>\n<div id=\"attachment_8675\" style=\"width: 299px\" class=\"wp-caption alignleft\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8675\" class=\" wp-image-8675\" title=\"SUS2 turbo-spring-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/SUS2-telescope-turbo-spring-Chambverland-Orthodontiste-a-Quebec.jpg\" alt=\"SUS2 turbo-spring-Dr Chamberland orthodontist in Quebec City\" width=\"289\" height=\"352\" \/><p id=\"caption-attachment-8675\" class=\"wp-caption-text\">SUS<sup>2<\/sup> turbo-spring.<\/p><\/div>\n<p>An outer spring called <strong>&#8220;turbo-spring&#8221;<\/strong> placed on the telescope element provides an additional force of 3 N to the mechanism of the corrector. 1 mm or 2 mm spacer rings can be added to the telescope rod for reactivation. This is however rarely necessary.<\/p>\n<p>.<br \/>\n<a href=\"#Top\">Back to top<\/a><br \/>\n<a id=\"preparation_orthodontic_arcwires\"><\/a><\/p>\n<h2>Preparation of orthodontic archwires<\/h2>\n<p>Anchorage tubes are necessary to attach the correctors to the upper molars.<\/p>\n<div id=\"attachment_8681\" style=\"width: 322px\" class=\"wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8681\" class=\" wp-image-8681\" title=\"SPEED convertible tube with headgear tube-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/Tube-convertible-16-et-tube-HG-iod-Chamberland-Orthodontiste-a-Quebec_eng.jpg\" alt=\"SPEED convertible tube with headgear tube-Dr Chamberland orthodontist in Quebec City\" width=\"312\" height=\"198\" \/><p id=\"caption-attachment-8681\" class=\"wp-caption-text\">SPEED\u2122 convertible tube with headgear tube.<\/p><\/div>\n<p>I use SPEED\u2122 convertible tubes composed of a very wide bonding pad, a convertible main tube and a convertible tube welded to the occlusal of the main tube.<\/p>\n<p>During the bonding of these tubes, it is important to pre-adapt the bonding pad on a stone model to maximize the contact between the pad and the labial surface of the tooth.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-8683\" title=\"16 convertible tube and HG tube perfect adaptation on the tooth-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/Tube-convertible-16-et-tube-HG-adapatation-intime-sur-la-dent-Chamberland-Orthodontiste-a-Quebec_eng.jpg\" alt=\"16 convertible tube and HG tube perfect adaptation on the tooth-Dr Chamberland orthodontist in Quebec City\" width=\"289\" height=\"286\" \/>.The picture on the opposite side shows a perfect adaptation of the bonding pad against the tooth surface. The better the adaptation of the pad is, the better the bonding strength is.<\/p>\n<p>To maximize the bonding strength, enamel is microetched with a blast of 90 micron aluminum oxide powder. After rinsing and drying, enamel is etched.<\/p>\n<p>I use Assure<sup>\u00ae<\/sup> photopolymerizable bonding resin on the bonding pad and enamel. After photopolymerization of the resin, the pad is covered with Assure<sup>\u00ae<\/sup> paste and placed on the tooth. A firm pressure is applied to remove the excess of paste before proceeding with photopolymerization.<\/p>\n<p><a href=\"#Top\">Back to top<\/a><\/p>\n<h3>How to adjust the bracket bonding pad?<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-8697 size-full\" title=\"SPEED convertible tube. Adjustment of the wide bonding pad on a stone model-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/Ajustement-du-bracket-large-mesh-pad-sur-modele-Chamberland-orthodontiste-a-Quebec_eng.jpg\" alt=\"SPEED convertible tube. Adjustment of the wide bonding pad on a stone model-Dr Chamberland orthodontist in Quebec City\" width=\"700\" height=\"190\" \/><\/p>\n<p>The bonding pad must be adjusted with bird peak pliers to obtain a tight adaptation with the buccal surface of the molar. It is easy to achieve on the study model, but nothing prevents from doing the same adaptation directly in the mouth prior to bonding if the model is unavailable.<br \/>\n<a href=\"#Top\">Back to top<\/a><\/p>\n<h3>SPEED\u2122 lower convertible tube<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-8703 \" title=\"Convertible tube and posterior cinch back-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/Tube-convertible-et-cinch-back-posterieur-Chamberland-orthodontiste-a-Quebec_eng.jpg\" alt=\"Convertible tube and posterior cinch back-Dr Chamberland orthodontist in Quebec City\" width=\"301\" height=\"193\" \/>In the mandibular arch, it is beneficial to use <strong>convertible tubes<\/strong> such as those manufactured by SPEED.<\/p>\n<p>The mechanism of the buccal clip allows a quick and easy insertion of an orthodontic archwire that is cinched back. A conventional tube is often likely to be debonded when the .020 X .025 steel archwire is bent.<\/p>\n<p><a href=\"#Top\">Back to top<\/a><br \/>\n<a id=\"buccal_offset_bend\"><\/a><\/p>\n<h3>Buccal offset bend<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-8706\" title=\"Buccal offset for SUS2-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/Buccal-offset-pour-SUS2-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"Buccal offset for SUS2-Dr Chamberland orthodontist in Quebec City\" width=\"274\" height=\"154\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-8710\" title=\"Buccal offset lower archwire SUS2-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/Buccal-offset-fil-inferieur-SUS2-Chamberland-Orthodontiste-a-Quebec_eng.jpg\" alt=\"Buccal offset lower archwire SUS2-Dr Chamberland orthodontist in Quebec City\" width=\"272\" height=\"177\" \/>A buccal offset bend is done to the distal of each lower canine. The archwire adapter is put against this bend to maintain the correctors in place.<\/p>\n<p><a href=\"#Top\">Back to top<\/a><\/p>\n<h3>L ball pin and upper molar attachment<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-8712\" title=\"L ball pin-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/L-ball-pin-Chamberland-Orthodontiste-a-Quebec_eng.jpg\" alt=\"L ball pin-Dr Chamberland orthodontist in Quebec City\" width=\"121\" height=\"211\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-8714\" title=\"L pin on molar tube-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/L-Pin-on-molar-tube-Chamberland-Orthodontiste-a-Quebec_eng.jpg\" alt=\"L pin on molar tube-Dr Chamberland orthodontist in Quebec City\" width=\"207\" height=\"222\" \/>.An L ball pin is bent at its end in order to be inserted into the loop of the female part of the corrector. This bend allows the corrector to be cleared from the headgear tube bonded to the molar.<\/p>\n<p>The L ball pin is inserted distally into the headgear tube. The bend near the loop is oriented buccally in order to keep the loop away from the headgear tube. The L ball pin must be 2-3 mm in length to the distal of the headgear tube, just enough to give freedom of movement, but not long enough to allow it to touch the bracket on the second molar.<\/p>\n<p>To the mesial of the tube, the rod is bent toward the occlusal or gingival side. Note that it is easier to bend toward the occlusal side than the gingival side. Wiengart universal pliers are used for the bending. The whole force must come from the wrist and care must be taken not to press on the bonded attachment when the rod is bent to avoid debonding the bracket.<\/p>\n<div id=\"attachment_8729\" style=\"width: 710px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-8729\" class=\"size-full wp-image-8729\" title=\"Bending of the L ball pin to the occlusal. E-Link elastic attached to the canine-first molar-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/MaRay-crochet-boule-pliage-gingival-Chamberland-Orthodontiste-a-Quebec_eng.jpg\" alt=\"Bending of the L ball pin to the occlusal. E-Link elastic attached to the canine-first molar-Dr Chamberland orthodontist in Quebec City\" width=\"700\" height=\"250\" \/><p id=\"caption-attachment-8729\" class=\"wp-caption-text\">Bending of the L ball pin to the occlusal. E-Link elastic attached to the canine-first molar.<\/p><\/div>\n<p>The above picture shows bending of the L ball pin to the occlusal. Notice the E-Link elastics of the canines to the first molars to distalize the canines at the same time as the molars. The maxillary archwire is cinched distally from the second molars.<\/p>\n<p><a href=\"#Top\">Back to top<\/a><\/p>\n<h2>Presentation of clinical cases<\/h2>\n<h3>Case #1<img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-8735\" title=\"Class II division 1-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/LachMa-classe-II-division-1-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"Class II division 1-Dr Chamberland orthodontist in Quebec City\" width=\"700\" height=\"136\" \/><\/h3>\n<p>Here is a typical case of a Class II division 1 malocclusion with little or no crowding (lack of space). The discrepancy between the upper and lower teeth is obvious.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-8737\" title=\"Initial cephalometric rx-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/LaShMa-rx-cephalometrique-initiale-Chamberland-orthodontiste-a-Quebec.jpg\" alt=\"Initial cephalometric rx-Dr Chamberland orthodontist in Quebec City\" width=\"304\" height=\"315\" \/>The cephalometric X-ray confirms a 4-mm skeletal backward shift of the lower jaw (ANB = 7\u00b0) and a prominent upper dentition.<\/p>\n<p>The patient is 12 years old.<\/p>\n<h3>SUS<sup>2<\/sup> correctors<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-8738\" title=\"SUS2 correctors-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/LaShMa-Bielles-SUS2-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"SUS2 correctors-Dr Chamberland orthodontist in Quebec City\" width=\"700\" height=\"121\" \/><\/p>\n<p>SUS<sup>2<\/sup> correctors were used from the 45<sup>th<\/sup> to the 69<sup>th<\/sup> week of treatment, for a total of 24 weeks. Notice the presence of E-Link elastics linking the canines to the pin on the molars. This makes it possible to move the canines backward at the same time as the molars by the mechanism of the correctors. Notice that steel orthodontic archwires are used and they are cinched to the distal of the upper and lower second molars.<\/p>\n<h3>Final occlusion<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-8740\" title=\"Final Class I occlusion-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/LaShMa-occlusion-classe-I-finale-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"Final Class I occlusion-Dr Chamberland orthodontist in Quebec City\" width=\"700\" height=\"123\" \/><\/p>\n<p>The treatment will have lasted 105 weeks. A canine and molar Class I relationship was obtained. The overjet and overbite are normal. We notice the presence of a few surface white lesions on the enamel of some teeth. We have re-explained oral hygiene measures and warnings on the risk of surface decalcifications very often. It is too bad. These lesions will subside a little bit with time, with the use of a fluoride toothpaste and with maintaining an impeccable oral hygiene.<\/p>\n<h3>Cephalometric tracing and superposition<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-8742\" title=\"Final cephalogram-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/LachMa-cephalogramme-final-Chamberland-Orthodontiste-a-quebec.jpg\" alt=\"Final cephalogram-Dr Chamberland orthodontist in Quebec City\" width=\"315\" height=\"329\" \/>.The cephalometric tracing shows a correction of the discrepancy between the upper and lower dentitions.<\/p>\n<p>To better understand the movements that occurred, the initial and final superposition tracings must be looked at.<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-8748\" title=\"Superposition of cephalometric tracings-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/LaShMa-superposition-des-trace-cephalometrique-Chamberland-Orthodntisite-a-Quebec-2.jpg\" alt=\"Superposition of cephalometric tracings-Dr Chamberland orthodontist in Quebec City\" width=\"700\" height=\"431\" \/><\/p>\n<p>The difference between the final red tracing and the initial black tracing represents the movement of the dentition in the correction of the malocclusion. Condylar growth is expressed by an anterior and lower displacement of the mandible at the tip of the chin (green circles).<\/p>\n<p>The tracing on the left shows that the upper teeth moved backward compared to their initial position, but this is explained by a decrease in the anterior maxillary growth. Indeed, the figure in the upper right corner called ANS-PNS@ASN shows a stable anteroposterior position of the upper incisors.<\/p>\n<p>Superposition of the mandibular tracing (left corpus &#8211; Chin) on the symphysis shows that condylar growth occurred (green circle), that the lower molars shifted anteriorly and that the lower incisors intruded (ingression) and slightly tipped forward, because the red tracing of the incisor is not totally parallel to the black tracing of the incisor.<\/p>\n<p>All these movements are normal and comply with the therapeutic effects reported in literature about fixed functional appliances. See page: <a title=\"How does a fixed functional appliance correct a Class II malocclusion?\" href=\"https:\/\/www.sylvainchamberland.com\/en\/appliances\/how-does-fixed-functional-appliance-correct-class-ii-malocclusion\/\" target=\"_blank\" rel=\"noopener\">How does a fixed functional appliance correct a Class II malocclusion?<\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-8751\" title=\"Initial final profile-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/LashMa-profil-initial-final-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"Initial final profile-Dr Chamberland orthodontist in Quebec City\" width=\"389\" height=\"215\" \/>Initial and final profile views. The lips remain prominent and are in contact at rest.<\/p>\n<p><a href=\"#Top\">Back to top<\/a><br \/>\n<a id=\"case2SUS\"><\/a><\/p>\n<h3>Case #2<\/h3>\n<p>.<img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-8761\" title=\"Class II div 1-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/EmEhou-classe-II-div-1-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"Class II div 1-Dr Chamberland orthodontist in Quebec City\" width=\"700\" height=\"136\" \/>Case #2, in addition to the Class II division 1 relationship, presents a deep supraocclusion with a deep overbite impinging palate. In other words, the lower teeth are in contact with the palate behind the upper incisors.<\/p>\n<p><a href=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/EMEHou-ceph-retrognathie-mandibulaire-grave-Chamberland-Orthodontiste-a-Quebec.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-8762\" title=\"Ceph severe mandibular retrognathia-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/EMEHou-ceph-retrognathie-mandibulaire-grave-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"Ceph severe mandibular retrognathia-Dr Chamberland orthodontist in Quebec City\" width=\"326\" height=\"308\" \/><\/a>The cephalometric X-ray highlights the discrepancy between the upper and lower teeth. The lower teeth are far behind the upper teeth and are in contact with the palate.<\/p>\n<p>The lower lip is hemmed forward because the upper teeth are in contact with the lower lip. The skeletal shift is 7.5 mm compared to 4 mm for the previous case (case #1).<\/p>\n<p>The patient is 13 years and 6 months of age, which means that she is advanced in her teenage years and less mandibular growth is available.<\/p>\n<p>In addition to correcting the discrepancy between the upper and lower teeth, one of the objectives of treatment is to increase the vertical dimension and allow the posterior teeth to erupt.<\/p>\n<p>The choices of treatment are:<\/p>\n<p>1- Correction of the A-P relationship with fixed appliances and SUS<sup>2<\/sup> correctors<\/p>\n<p>or<\/p>\n<p>2- Orthosurgery comprehensive treatment.<\/p>\n<p>We opted for a treatment with SUS<sup>2<\/sup> correctors while informing the patient about the risk of having to undergo an orthognathic surgery.<\/p>\n<h3>SUS<sup>2<\/sup> correctors<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-8766\" title=\"SUS2 corrector-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/EmEHou-bielle-SUS2-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"SUS2 corrector-Dr Chamberland orthodontist in Quebec City\" width=\"700\" height=\"121\" \/><\/p>\n<p>SUS<sup>2<\/sup> correctors were inserted at the 26<sup>th<\/sup> week of treatment and stayed in place for 17 weeks. Note the E-Link elastics on the upper canines to help retract the canines to a Class I relationship. Notice the presence of bands on the molars instead of bonded brackets. Indeed, a palatal expansion phase preceded in order to coordinate the dental arches in a Class I relationship. I prefer a banded expander (Hilgers or Hyrax type), because it allows me to introduce the correctors faster than if I used a bonded expander with an occlusal covering made of acrylic.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-8767\" title=\"Hilgers expander-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/EhEhou-Appreil-expansion-Hilgers-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"Hilgers expander-Dr Chamberland orthodontist in Quebec City\" width=\"366\" height=\"139\" \/>The change in width of the maxillary arch is obvious on the picture on the right. The L ball pins used to hold the correctors are bent toward the occlusal.<\/p>\n<h3>Progression at 43 weeks<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-8773\" title=\"Progression at 43 weeks 17x25 wire mushroom loop-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/EmEhou-progression-a-43-semaines-fil17x25-mushroom-loop-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"Progression at 43 weeks 17x25 wire mushroom loop-Dr Chamberland orthodontist in Quebec City\" width=\"700\" height=\"133\" \/>When the SUS<sup>2<\/sup> correctors were removed, a 0.17 x 0.25 \u03b2-titanium archwire was engaged and activated to retract and intrude the anterior upper teeth. This mushroom loop archwire allows the fast retraction of the anterior teeth in a frictionless system.<\/p>\n<h3>Progression at 81 weeks<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-8775\" title=\"Progression at 81 weeks-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/EmEhou-Progression-a-81-semaines-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"Progression at 81 weeks-Dr Chamberland orthodontist in Quebec City\" width=\"700\" height=\"119\" \/><\/p>\n<p>When the anterior teeth were retracted, a .021 x.025 \u03b2-titanium archwire and an elastomeric chain were engaged. This archwire allows the correction of the torque of the anterior teeth and the elastomeric chain allows the spaces to close.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-8779\" title=\"Ceph progression at 81 weeks-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/EmEhou-ceph-progresssion-a-81-semaines-Chamberland-Orthodontiste-a-Quebec.jpg\" alt=\"Ceph progression at 81 weeks-Dr Chamberland orthodontist in Quebec City\" width=\"284\" height=\"280\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-8788\" title=\"Ceph superposition progress-Dr Chamberland orthodontist in Quebec City\" src=\"https:\/\/sylvainchamberland.com\/wp-content\/uploads\/2023\/04\/EmEhou-ceph-superposition-progres-Chamberland-orthodontiste-a-quebec.jpg\" alt=\"Ceph superposition progress-Dr Chamberland orthodontist in Quebec City\" width=\"471\" height=\"302\" \/>A small condylar growth occurred despite the age of 13 years and a half.<\/p>\n<p>In the mandibular arch, molars have erupted and the lower incisors tipped labially. In the maxilla, the upper incisors moved back.<\/p>\n<p>These movements comply with those expected from Class II correctors. The eruption of the lower molars allowed the correction of the deep supraocclusion (deep overbite).<\/p>\n<h3>Final occlusion<\/h3>\n<p>The fixed appliances will be removed in a few days. Pictures to come.<\/p>\n<p><a href=\"#Top\">Back to top<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SUS2 is an acronym for Sabbagh Universal Spring. The distributor of SUS2 correctors is the Dentaurum company. A SUS2 corrector is made of a telescope rod that inserts into a guide tube. An inner spring ensures a compression force of 2.4 Newton (1 N = 110 g). An archwire adapter makes it possible to attach [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":16382,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[744,1],"tags":[728,718,729],"class_list":["post-22321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fonctionnels-fixes-en-appliances","category-non-classifiee","tag-appareils-fonctionnels-fixes-en","tag-bielles-sus2-en","tag-sabbagh-universal-spring-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SUS2 correctors - Dr. Sylvain Chamberland, Orthodontist<\/title>\n<meta name=\"description\" content=\"SUS2 is an acronym for Sabbagh Universal Spring and is composed of a telescope rod that inserts into a guide tube.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sylvainchamberland.com\/en\/sus2-correctors\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SUS2 correctors - 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