orthodontic tooth extrusion

A case report a bout:

Orthodontic Extrusion Of The

Impact TeethBy Dr. Ozair(Erfan)Orthodontist Stomatology Hospital Kabul Afghanistan

Abstract

o16 years oldo impacted teethoExtraction ?oExtrusion with orthodontics

introduction

• What is impacted teeth?• unerupted• Why ?

دندانها نهفتگی درجه

دندانها نهفتگی درجه

ماندیبوال مولرسوم مگزیال مولرسوم مگزیال کانینهای ماندیبوال پریمولرهای مگزیال پریمولرهای ماندیبوال های کانین مگزیال سنترالهای مگزیال لترالهای

o 16 years old patiento Mild crowdingo Absence of 35 teeth/infra occ 34o extruted her teeth with ortho

Case history

• Class 1• Rotation of 15/25• Problem of leveling/aliening

• Cast analysis• Photography• Extraction of 14/24• MBT bracket

• Started with 0.14 niti• 0.16 Niti• 0.18 SS• 0.20SS• Rectangular 19/25

• Surgical plan

Discussion

• Delayed or impaction of central teeth• 0.13%

• Causes• Trauma• Milk teeth• Fibrous tissue

• To doubt impaction• More than 6 month• Early eruption of lateral

• Diagnosis• Radiography

• Adequate space (9mm)• Removing barrier• 75% auto eruption

o When auto eruption not occur:• Plant of brackets and bands• For more than 10y• Leveling/aliening• Opening coil

• When 0.20 ss or 19/25 rect.

Impacted canine teeth

• Early diagnosis/prevention• Causes• Molar teeth• Canine ankylosis• Other barrier

• SUPPOSITION OF IMPACTION• More than 15y• Canine prominence in 11-12y• Bilateral• Lateral inclination

o When we can extrude ?• After 12y• Adequate space in arch• No any barrier in the path• Close apex• No dilaceration

• Or extracted canine and then:• Replace the Pm teeth• Prosthesis• Implant• Auto eruption

o Labialy impacted canine• Mostly meiso labialy• At first lev/alie• Rect ss• When it is near the lateral root

o Palataly canine teeth• No auto eruption• Two way1. Open the 2/3 crown and plant bracket2. Open the crown and wait

• No extraction of PM• Both arch under treatment• Low continuous force

o For prevention of revers1. Early rotation treatment2. Supra crestal fibrotomy3. Torque4. Fixed retainer5. Palatal mucosa removing

o Some time extractin is able than extrusion:1. Malposition2. Ankylosis3. Resorption4. Sever dilaceration5. Malformed teeth

Impacted premolar

• Early missing of M2(milk)• Mesialy movement of M1• Extraction of PM1

• Rectoangular ss• Surgical plan