part i-management of class ii malocclusion with speed appliance part i
DESCRIPTION
SPEED appliance and treatment of class II malocclusion using Forsus, Twin Force Bite corrector. Class II treatment with impacted canine (canine incluse)TRANSCRIPT
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©Dr Sylvain Chamberland
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Management of Class II Malocclusion with SPEED
AppliancePart I
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©Dr Sylvain Chamberland
Clinical case presentation
• Class II div 2
• Class II div 1
• Pendulum Appliance
• Forsus
• Crossbow appliance and Forsus class II corrector
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©Dr Sylvain Chamberland 3
Cl II div 2
# 2- Ém. Ma.
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©Dr Sylvain Chamberland
• RPE. Distallize 6|6
• Decompensation 1|1, Level Md curve of Spee
É.M. 13a10m; 10-03
É.M. 14a3m; 04-04
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©Dr Sylvain Chamberland
É.M. 12-03 É.M. 4-04
É.M. 06-04 É.M. 01-05 É.M. 06-05
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©Dr Sylvain Chamberland
• Note hook toward occlusal plane
! Reduce vertical component of distallizing force
Em. Ma 06-04
Em. Ma 11-04
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©Dr Sylvain Chamberland
Em. Ma 01-05
Em. Ma 03-05: Reassessment of bk position
Em. Ma 05-05:
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©Dr Sylvain Chamberland
É.M. 06-05
É.M. 02-06
Em. Ma 08-05:
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©Dr Sylvain Chamberland
SNA = 79 78
SNB = 73 73,5
ANB= 6 4,6
ABOP = 5 2,4
FMA= 20,4 20,3
ANS-Me=51 56
1/SN = 70 99
1/1 = 175,4 128,6
/1-PM= 86 101,5
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©Dr Sylvain Chamberland
• 2 years into retention
Em. Ma 02-08,
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©Dr Sylvain Chamberland 11
Cl II div 1
# 4- Vi. Ga.
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©Dr Sylvain Chamberland
• Cl II div 1
• Bimaxillary protrusion
• Mesially rotated 1st molar
Vi.Ga. 15-04-08
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©Dr Sylvain Chamberland
• Proclined Mx & Md 1/1
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©Dr Sylvain Chamberland
• At 7 months
! .020x.020 neost/ .19x.25 resolv
! Chain 6-5-4 | 4-5-6 + cl II elastic
Vi.Ga. 09-12-08
TPA helped to derotate the molars, change the arch form and obtain class I molar relationship
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©Dr Sylvain Chamberland
• At 10 months
• Reassessment of bk position 15, 13, 12
Vi.Ga. 19-02-09
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©Dr Sylvain Chamberland
• 21x21x20 enmasse ret + Class II elastic at occlusal plane
• Class 1 E-links; md: 20x25 nitisw
Vi.Ga. 12-05-09 at 13 months
Vi.Ga. 25-08-09 at 16 months
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©Dr Sylvain Chamberland
Vi.Ga. 25-06-10 tx time: 113 weeks
Note 1st molar derotation
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©Dr Sylvain Chamberland
Vi.Ga. 25-06-10 at 113 weeks
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©Dr Sylvain Chamberland 19
Cl II div 1
# 5- Jo. Si.
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©Dr Sylvain Chamberland
• Mesially rotated 1st molar
Jo..Si. 27-02-08
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©Dr Sylvain Chamberland
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©Dr Sylvain Chamberland
• Molar derotation with TPA
• Class I relationship achieved
Jo..Si. 25-11-08
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©Dr Sylvain Chamberland
Jo..Si. 28-01-09
• At 10 months: Finishing
• At 13 months: more finishing
Jo..Si. 28-03-09
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©Dr Sylvain Chamberland
• Tx duration 15 months (62 w.)
Jo..Si. 01-06-09
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©Dr Sylvain Chamberland
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©Dr Sylvain Chamberland
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©Dr Sylvain Chamberland 27
Cl II div 1
# 6- Gu. Ma.
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©Dr Sylvain Chamberland
• Class II div 1
• Constricted maxilla
Gu.Ma. 0707
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©Dr Sylvain Chamberland
• Forsus spring-rod (insertion April 07)
! RPE
! Md + Mx: .019 x .025 SS cinched distal /7’s
! Loops distal /3’s
Gu.Ma. 0708
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©Dr Sylvain Chamberland
• Offset bend
Tricks
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©Dr Sylvain Chamberland
• At 5 months: removal of RPE and Forsus
• Molar distallization 6’s/
• Anterior proclination
Gu.Ma. 0908
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©Dr Sylvain Chamberland
• Bone deposition lamina dura
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©Dr Sylvain Chamberland
• Palatoversion de 1/
• Proclination /1
• Lip incompetency
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©Dr Sylvain Chamberland
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©Dr Sylvain Chamberland
• Mx: .020 x .025 SW + ART
Gu. Ma 01-09
Gu. Ma 04-09
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©Dr Sylvain Chamberland
Gu. Ma 01-09
Gu. Ma 06-09
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©Dr Sylvain Chamberland
• Finishing bend 11, 21
• Note expansion of buccal segment
Gu. Ma 23-06-09
Gu. Ma 21-05-09
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©Dr Sylvain Chamberland
• Tx duration: 25 months
Gu. Ma 29-09-09
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©Dr Sylvain Chamberland
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©Dr Sylvain Chamberland
• Favorable growth occurred
• Adverse side effect relapsed
• /1 inclination maintained
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©Dr Sylvain Chamberland
• He's happy!
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©Dr Sylvain Chamberland
Gu.Ma.250811
99 weeks into retention
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©Dr Sylvain Chamberland 43
Cl II div 1
# 7- Sh. La.
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©Dr Sylvain Chamberland
• ♀, 12 a. 5 m.
• Cl II div 1
La.Sha 0807
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©Dr Sylvain Chamberland
• Md retrusion, SNB = 5°, ABOP = 6,5 mm
• Md dento-alveolar retrusion
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©Dr Sylvain Chamberland
• Post-expansion
• Forsus inserted
! Note:
! Occlusal rest on 7’s
! Engaged 17 & 27 on the archwire
! Posterior cinch
La.Sha 1007
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©Dr Sylvain Chamberland
• Labial tipping of lower incisors
• Distal drift of 6’s
La.Sha 0308
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©Dr Sylvain Chamberland
• Lower buccal segment moved mesially
• Upper buccal segments moved distally
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©Dr Sylvain Chamberland
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©Dr Sylvain Chamberland
• 5 months: Xbow
• Hyrax impingement
• Md buccal segment tipped mesially
• Cl III molar relationship
La.Sha 0308
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©Dr Sylvain Chamberland
• Mx: .019 x .025 resolve
• Md: .016 neost, rebond 35
La.Sha 0608
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©Dr Sylvain Chamberland
• 12 months into treatment
• Mx: .021 x .021 x .020 SW en masse retraction
• Md: .020 x .020 neost
La.Sha 0908
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©Dr Sylvain Chamberland
• At 18,8 months
• Mx & Md: .020 x .025 SW
! Arch form coordination, torquing & finishing
La.Sha 0309
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©Dr Sylvain Chamberland
• Torquing arch ART and finishing bend
La.Sha 0309
La.Sha 13-04-09
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©Dr Sylvain Chamberland
La.Sha 13-04-09
• Finishing bend
• Note expansion side effect at 1st molar
! Crown buccal-root lingual cause by intrusive force at the attachment point:
! Use a TPA or cut the wire and let it relapse
La.Sha 26-05-09
Lindauer et al, Semin Orthod 2001;7:207-214.)
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©Dr Sylvain Chamberland
• Tx duration = 23 months
La.Sha 26-05-09
La.Sha 26-08-09
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©Dr Sylvain Chamberland
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©Dr Sylvain Chamberland
• Mx incisors retraction occurred
• Torque was maintained
! ART + full dimensional archwire + Speed
• Severe lower incisors proclination returned to normal value
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©Dr Sylvain Chamberland
• She's happy!
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©Dr Sylvain Chamberland
• 82 weeks into retention
La.Sha 22-03-11
La.Sha 0807
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Cl II div 1
# 8- M.-P. Ga.
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©Dr Sylvain Chamberland
• Cl II div 1
• Proclined 1/
• Retroclined /1
• Impacted 23
Ma-Pi.Ga.0508 11y 5 m
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©Dr Sylvain Chamberland
Ma-Pi.Ga.0508
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©Dr Sylvain Chamberland
Tx plan
• Goals
! Retract 1/
! Procline /1
! Achieve cl I molar and canine
• Tx mechanics:....?
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©Dr Sylvain Chamberland
• /1 proclined
• 1/ retroclined
• 6/ distalized
• #23 is erupting (through mucosa!!!)
Ma-Pi.Ga.1108
•5 months into treatment: RPE + Forsus Xbow removed
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©Dr Sylvain Chamberland
• Delayed eruption of #35 & 45 is expected
• Pr: exo #75 & #85
Ma-Pi.Ga.1108
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©Dr Sylvain Chamberland
Ma-Pi.Ga.0109
Ma-Pi.Ga.0409
• Lack of keratinized gingiva #23 buccal
Ma-Pi.Ga.0609
• At 12 months: class I relationship is achieved
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©Dr Sylvain Chamberland
At 14 months
• Reassessment of brackets position
! #12 & #22 to be rebondedMa-Pi.Ga.0609
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©Dr Sylvain Chamberland
• Tx time = 119 weeks
• Narrow band of keratinized gingiva is noted #23 buccal
Ma-Pi.Ga.0910
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©Dr Sylvain Chamberland
Ma-Pi.Ga.0910
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©Dr Sylvain Chamberland
• Growth expressed vertically
• Mandibular dentition mesialized
• She's happy
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©Dr Sylvain Chamberland 72
Cl II div 1
# 9- Al. Du.
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©Dr Sylvain Chamberland
• Cl II div 1
• Severe ALD
• Impacted 23
Al.Du.0608
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©Dr Sylvain Chamberland
Al.Du.0608
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©Dr Sylvain Chamberland
Tx Planning
• Goals
! Achieve cl I molar relationship
! Obtain intra-arch symmetry
! Maintain /1-MP AP-wise
! Retract 1/
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©Dr Sylvain Chamberland
• Voussure vestibulaire
• Incision
Al.Du.0109
Al.Du.0209
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©Dr Sylvain Chamberland
• Incision sulculaire et sommet de la crête
• Incision de relâche au distal
! Préserver tissu kératinisé
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©Dr Sylvain Chamberland
• Rugine pour
! Décoller lambeau périosté
• Farabeuf
! Relèvement du lambeau
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©Dr Sylvain Chamberland
• Canine exposée
• Enlèvement du sac folliculaire
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©Dr Sylvain Chamberland
• Mordançage
! Self etching primer (ESPE)
• Collage du bouton
! Transbond XT
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©Dr Sylvain Chamberland
• Ligature métallique
• Activation sur l’arc
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©Dr Sylvain Chamberland
• Fermeture du lambeau
Merci au Dr Michel Fortin
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©Dr Sylvain Chamberland
• Guérison à 14 jours post op
! Absence de cicatrice
! Réactivation de fil de traction Du.Al. 18-02-09
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©Dr Sylvain Chamberland
• Guérison ~ 2 mois
! Excellente bande de gencive kératinisée
! Absence de cicatrice visible
Du.Al. 01-04-09
Du.Al. 05-07-10
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©Dr Sylvain Chamberland
Al.Du.0409
Al.Du.0209
Al.Du.0509
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©Dr Sylvain Chamberland
Al.Du.0809
• Note Class I E-links module• Note iatrogenic cant of the occlusal plane• Forsus modules = 4 months
Al.Du.1209
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©Dr Sylvain Chamberland
• Tx time = 104 weeks
• Arch symmetry achieved
• Class I molar and canine relationship
Al.Du.0710
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©Dr Sylvain Chamberland
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©Dr Sylvain Chamberland
• 1/-MP maintained
• /6 protracted
• 1/-SN retracted, maintain torque