Retention And Relapse Types In Orthodontics

Retention And Relapse In Orthodontics

Management of Relapse

• Elimination of cause of malocclusion will prevent relapse.
• Malocclusion should be overcorrected as a safety factor.
• Proper occlusion is a potent factor in holding teeth in their corrected positions.
• Bone and adjacent tissues must be allowed time to reorganize around newly positioned teeth.
• Correction carried out during period of growth is less likely to relapse.
• Many treated malocclusion require permanent retaining devices.

“Importance of studying retention and relapse types for better outcomes: Questions explained”

Types of Retainers

• Removable Retainers
  • Hawley retainer
  • Begg retainer
  • Clip on retainer/Spring aligner
  • Wrap around retainer
  • Kesling’s tooth positioners
  • Invisible retainer or Essix retainer
  • Functional appliance

“Steps to explain different types of retention: Fixed vs removable retainers: Q&A guide”

• Fixed Retainers
  • Banded canine-to-canine retainer
  • Bonded canine-to-canine retainer
  • Band and spur retainer
  • Anti-rotation band

“Common challenges in managing retention and preventing relapse: FAQs provided”

• Hawley retainer is commonly used retentive appliance.
• The retainer incorporates clasps on molar teeth and a labial bow, which spans from canine-to-canine.
• Palatal or lingual portion of the appliance is constructed of acrylic and covers the palatal mucosa.
• Due to palatal coverage, it acts as the potential bite plane to control overbite.
• Drawback of Hawley’s retainer is when it is used in first premolar extraction cases, it causes the space to open because of its wedging effct.

“Early warning signs of issues with retention devices: Common questions”

• It is made up of single wrap round labial bow extending from the distal of second molar to the opposite second molar.
• Following are the advantages:
  • Wrap around wire eliminates the potential occlusal interferences and allow vertical setting of occlusion.
  • In extraction cases, it maintains canine and second premolar in tight contact, thereby eliminating the risk of space opening up.

• It is mainly used in lower anterior region in correcting the minor rotations of anterior teeth.
• The appliance is made by wire framework which runs labially and lingually over the incisors passing between canine and the premolar. Both labial and lingual wire segments are embedded in the strip of clear acrylic.
• Its main advantage is that, it is well tolerated by the patients and can be used to realign lower incisors.

• It is the extended version of spring aligner which covers all teeth.
• It has a wire reinforced plastic bar made with clear acrylic along both the labial and lingual surfaces of teeth.
• It is not routinely used in orthodontic practice.
• The retainer splints the teeth together firmly and is usually used in stabilizing the periodontally weak dentition.

• It is devised by Kesling and is used as a finishing appliance.
• This positioner itself can be used as retaining appliance.
• Main advantage of this appliance is that it maintains intraarch tooth position and occlusal relationships also.
• Disadvantages include bulkiness of appliance, it does not retain incisor irregularities and rotations as efficient as standard retainers. The appliance has tendency for deep bite.

• Essix canine-to-canine retainer is made from clear thermoplastics.
• This retainer incorporates all the advantages of canine-tocanine clip-on retainer.
• In extraction cases, the appliance extend to cover the extraction site.
• This appliance is esthetically acceptable.

• These appliances are used in subjects who have still growth left
• Commonly used appliances are activators and oral screen.

• Fixed retainers are indicated in conditions where long-term retention is needed.
• It is indicated in conditions where intra-arch instability is anticipated.

• This retainer is indicated for maintenance of lower incisor position at the time of growth.
• This retainer consists of fied lingual bar which is attched to the canines or premolars in some of the cases.
• Fixed lingual bar should be soldered to the canine bands on the lingual aspect.

• A fixed lingual canine-to-canine retainer can be fabricated without bands by bonding to the lingual surface.
• The appliance is attached only to the canines and rest passively against lingual surface of central and lateral incisor.
• It is made by heavy wire for resisting the distortion.
• Ends of wire should be sandblasted to improve retention.
• Modification: In rotation and crowding correction, bond the lingual wire to one or more incisor teeth. In this situation, a flexible braided steel arch wire is used.

• It is used to maintain corrected single tooth rotation.
• Band on the rotated tooth consists of two spurs welded to it—labially and lingually.
• Spurs rest over adjacent teeth and prevent relapse.

• It is used in cases of orthodontic correction of single tooth rotation or labiolingual displacement.
• This appliance prevents tooth from returning to its original position.