Adams cribs

Please comment on the Adams crib

Your examples of a moment; Orthos

Post a picture that best illustrates this for you

This pic is from Blom as example 

These 2pics are examples from Mouton

Pic example from Van den Heever

Your examples of a couple; Orthos

Please post a picture that illustrates this the best in your opinion

Mouton's example's of a couple

This is example from Van den Heever

Class II malocclusion

Give a general description of the factors that characterize Class II malocclusion.

Changes that occur in wire because of manipulation

Explain the changes that occur to the different types of orthodontic wires when subjected to strain hardening as well as annealing processes.  (where applicable)

Rotation of teeth with orthodontics

Assuming that the centre of resistance in a tooth is in the middle of the apical third of that tooth;

Explain the effect the following lines of distal force will have on the position of the rotational centre and the movement of the tooth, when applied to a maxillary molar by means of a face bow.

(a)        A line of force passing through the centre of resistance.

                  

(b)        A line of force apical to the centre of resistance.                   

(c)        A line of force further apically to the centre of resistance.

(d)       A line of force passing occlusally to the centre of resistance. 

                                                                                                                

Translation of a free body

“A force which passes through the centre of resistance will produce pure

 translation of a free body”.

Give a short description of

           

(a)                The result if the force vector does not pass through the centre of resistance.                                                                                    

(b)               How the degree of translation (rotation) is effected by the perpendicular distance from the force vector to the centre of resistance.

Orthodontics in 3 millennia. Chapter 9: Functional appliances to midcentury

Download the article from Google drive and provide your comments below

Why would you agree or disagree with the following statement. Provide references to support your arguments

Any orthodontic appliance is a force system

Desirable characteristics of Orthodontic wires

Below is listed the main criteria for the selection of an orthodontic wire (Desirable characteristics)

(O’Brien W.J., Dental Materials and their selection, Pg 284)

• A large springback
• Low stiffness
• Good formability
• High stored energy
• Corrosion resistance
• Biocompatibility and environmental stability
• Low surface friction
• Capability to be welded or soldered to auxillaries
• Cost                                                                                                                   

Discuss each of these characteristics and why you think they are listed as desirable criteria for orthodontic wire.

Case 6 - Discuss the appropriate components you would place on this case and why?

Case 5 - Discuss the appropriate components you would place on this case and why?

Case 4 - Discuss the appropriate components you would place on this case and why?

Case 3 - Discuss your suggested treatment

Case 2 Discuss appliance you would fabricate for this case

Discuss the appropriate components you would place on this case and why?

Expectations for the Advanced Orthodontics block

Please post your expectations for this block regarding Orthodontics.