orthodontic tooth extrusion
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Transcript of orthodontic tooth extrusion
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A case report a bout:
Orthodontic Extrusion Of The
Impact TeethBy Dr. Ozair(Erfan)Orthodontist Stomatology Hospital Kabul Afghanistan
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Abstract
o16 years oldo impacted teethoExtraction ?oExtrusion with orthodontics
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introduction
• What is impacted teeth?• unerupted• Why ?
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دندانها نهفتگی درجه
دندانها نهفتگی درجه
ماندیبوال مولرسوم مگزیال مولرسوم مگزیال کانینهای ماندیبوال پریمولرهای مگزیال پریمولرهای ماندیبوال های کانین مگزیال سنترالهای مگزیال لترالهای
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o 16 years old patiento Mild crowdingo Absence of 35 teeth/infra occ 34o extruted her teeth with ortho
Case history
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• Class 1• Rotation of 15/25• Problem of leveling/aliening
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• Cast analysis• Photography• Extraction of 14/24• MBT bracket
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• Started with 0.14 niti• 0.16 Niti• 0.18 SS• 0.20SS• Rectangular 19/25
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• Surgical plan
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Discussion
• Delayed or impaction of central teeth• 0.13%
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• Causes• Trauma• Milk teeth• Fibrous tissue
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• To doubt impaction• More than 6 month• Early eruption of lateral
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• Diagnosis• Radiography
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• Adequate space (9mm)• Removing barrier• 75% auto eruption
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o When auto eruption not occur:• Plant of brackets and bands• For more than 10y• Leveling/aliening• Opening coil
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• When 0.20 ss or 19/25 rect.
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Impacted canine teeth
• Early diagnosis/prevention• Causes• Molar teeth• Canine ankylosis• Other barrier
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• SUPPOSITION OF IMPACTION• More than 15y• Canine prominence in 11-12y• Bilateral• Lateral inclination
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o When we can extrude ?• After 12y• Adequate space in arch• No any barrier in the path• Close apex• No dilaceration
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• Or extracted canine and then:• Replace the Pm teeth• Prosthesis• Implant• Auto eruption
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o Labialy impacted canine• Mostly meiso labialy• At first lev/alie• Rect ss• When it is near the lateral root
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o Palataly canine teeth• No auto eruption• Two way1. Open the 2/3 crown and plant bracket2. Open the crown and wait
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• No extraction of PM• Both arch under treatment• Low continuous force
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o For prevention of revers1. Early rotation treatment2. Supra crestal fibrotomy3. Torque4. Fixed retainer5. Palatal mucosa removing
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o Some time extractin is able than extrusion:1. Malposition2. Ankylosis3. Resorption4. Sever dilaceration5. Malformed teeth
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Impacted premolar
• Early missing of M2(milk)• Mesialy movement of M1• Extraction of PM1
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• Rectoangular ss• Surgical plan
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