0:30 IZC screws 1:25 how to put an IZC screw - LA, go 90 degrees. 1mm deep into bone only if you are aiming 90 degrees (not recommended). To allow more depth, aim 60-70 degrees so it is more stable but you must allow room for bracket in nearby teeth 2:30 video demonstrating screw placement. Ideal insertion torque 10 Ncm. PC: 10-12 oz stretching to the canine post 4:00 demo on skull model of positioning and angulation of IZC 4:25 can we distalise the Mx dentition with IZC? 4:55 interradicular/interdental placement (traditional) vs IZC placement pros and cons. Ref IJOI 47 6:35 4 uses of IZC 6:37 IZC for asymmetric mechanics 6:55 extraction mechanics to resolve bucally erupted 23 and TRANSPOSED 22/23. Use of T loop to retract 23 (19x25 TMA short legs - attached to IZC screw hole in Q2). PC to wire from TAD as well. Don't bond lateral, stop is placed mesial to crowding as per Damon protocol. OCS to open more space to allow 23 to slide in where 24 was extracted 8:37 Buccal Shelf Screw (2x12 SS) - applicable to lower 6,7,8 buccal areas. use 8-14 oz with head position >5mm ? 9:55 Position yourself at 12 O clock for inserting in Q4 if you are right handed. For the Q3 areas, move yourself to 1 o clock position so your hand ergonomics is straight towards buccal shelf (11:00). It seems you place the screw right where Attached gingiva and Mucous Membrane meet (12:55). 13:30: video demo for Buccal shelf. Make a dent with probe. Stretch mucosa nd screw in. takes 20sec. 8-14 ounce - proportional to the perceived bone quality when screwing in. PC from head of TAD to atnerior teeth to other sie 14:50 skull views of IZX and BS and RAMUS TAD positions 15:30 Buccal shelf versis Mini Implant (interradicular). BS is outside roots with parallel elastic force while MI is not paralle has a lower head and has a pulling down force on brackets. The mechanics of BS screw is anti clockwise on mandible. Failure rate of BS is 7% 16:35 morph animation of BS usage and APPARENT WHOLE ARCH DISTALISATION OVER 22 MONTHS with 11mm closure (AJODO Dec 2015) 17:30 IZC for asymmetrical mechanics. 46 was uprighted (SCISSOR BITE) 18:35: LHS open bite (same case) then compares to an exact case 3 years later where the patient had surgery . F 21:10 dilacerated root case 17mm subgingival. OS wanted exo all and two implants. . Chris elected to exo odontodome and over 25 months waited for eruption and tied teeth in
![[LECTURE: 5] IZC Bone Screws | Damon Appliance - Non-Extraction Correction of Class II Malocclusion](http://i.ytimg.com/vi/7eCw4BwZgkM/mqdefault.jpg)
0:30 IZC screws
1:25 how to put an IZC screw - LA, go 90 degrees. 1mm deep into bone only if you are aiming 90 degrees (not recommended). To allow more depth, aim 60-70 degrees so it is more stable but you must allow room for bracket in nearby teeth
2:30 video demonstrating screw placement. Ideal insertion torque 10 Ncm. PC: 10-12 oz stretching to the canine post
4:00 demo on skull model of positioning and angulation of IZC
4:25 can we distalise the Mx dentition with IZC?
4:55 interradicular/interdental placement (traditional) vs IZC placement pros and cons. Ref IJOI 47
6:35 4 uses of IZC
6:37 IZC for asymmetric mechanics
6:55 extraction mechanics to resolve bucally erupted 23 and TRANSPOSED 22/23. Use of T loop to retract 23 (19x25 TMA short legs - attached to IZC screw hole in Q2). PC to wire from TAD as well. Don't bond lateral, stop is placed mesial to crowding as per Damon protocol. OCS to open more space to allow 23 to slide in where 24 was extracted
8:37 Buccal Shelf Screw (2x12 SS) - applicable to lower 6,7,8 buccal areas. use 8-14 oz with head position >5mm ?
9:55 Position yourself at 12 O clock for inserting in Q4 if you are right handed. For the Q3 areas, move yourself to 1 o clock position so your hand ergonomics is straight towards buccal shelf (11:00). It seems you place the screw right where Attached gingiva and Mucous Membrane meet (12:55).
13:30: video demo for Buccal shelf. Make a dent with probe. Stretch mucosa nd screw in. takes 20sec. 8-14 ounce - proportional to the perceived bone quality when screwing in. PC from head of TAD to atnerior teeth to other sie
14:50 skull views of IZX and BS and RAMUS TAD positions
15:30 Buccal shelf versis Mini Implant (interradicular). BS is outside roots with parallel elastic force while MI is not paralle has a lower head and has a pulling down force on brackets. The mechanics of BS screw is anti clockwise on mandible. Failure rate of BS is 7%
16:35 morph animation of BS usage and APPARENT WHOLE ARCH DISTALISATION OVER 22 MONTHS with 11mm closure (AJODO Dec 2015)
17:30 IZC for asymmetrical mechanics. 46 was uprighted (SCISSOR BITE)
18:35: LHS open bite (same case) then compares to an exact case 3 years later where the patient had surgery . F
21:10 dilacerated root case 17mm subgingival. OS wanted exo all and two implants. . Chris elected to exo odontodome and over 25 months waited for eruption and tied teeth in
Sir you are doing awesome work, a great teacher for people like us!
Excelente trabajo, muy profedionales
amazing video, thank you!
Great work done
Thanks for sharing
Great work sir, Where can I buy these screws please 🙏🏻 I’m in Italy
Sir, how does tte powerchain to 1st premolar prevent flaring ? Is it to counteract the forces of open coil spring ?
Great technique & presentation..
Thanks for sharing this knowledge, that too, for free.
Thanks 🙏💯
Hermoso trabajo, impecable.
OUTSTANDING !!!!!!
El mejor!!
nice!
🎉
Thank you Chris Chang and team.
One dubts @ 14 min Buccal shelf Placement -
Create an antagonist - what do you mean
Can you please explain
It means using your hip and palm to fix the patient's head as an antagonist to the force you applying on the screw.
👍
化腐朽为神奇
Telefono x favor
i'm having trouble finding the free download of the article at ijoi.pro; I am a registered member. Thanks!
Direccion y celular o correo x favor