Topic: Static Analysis: Lecture 1,2,3

Instructor: Dr. Engilman

 

Outline:

 

(1)     What is a force?….moment?….couple?

(2)     What are the principles of transmissibility of forces and equilibrium of forces?

(3)     How can forces affect an object? Or, what is translation, rotation, and tipping?

(4)     Statics and the tooth: center of resistance, center of rotation, and the countervailing couple.

(5)     Controlling the position of a root via a countervailing couple.

(6)     Moment-to-force ratios: theory and application.

 

Preparation

 

Read

 

1.        Smith and Burstone: Mechanics of Tooth Movement, Am. J. Orthod., 85: 294-307, 1984.

 

2.        Isaacson R: The Ground Rules for Arch Wire Design, Seminars in Orthodontics, Vol 1, No 1, March 1995, pp 3-11

 

3.        Lindauer S: The Basics of Orthodontic Mechanics, Seminars in Orthodontics, Vol 7, No 1, March 2001, pp 2-15

 

4.        Kusy and Tulloch: Analysis of Moment-to-Force Ratios in the Mechanics of Tooth Movement, Am.J.Orthod.Dent.Orthop., 90: 127-131, 1986.

 

 

 

 

 

 

Topic: Orthodontic Materials,12

Instructor: William Engilman

 

Outline:

 

(1)     Wires

 

(a)     Alloy base: gold, iron, cobalt-chromium, nickel-titanium, and beta-titanium.

(b)     Composition and properties.

(c)     Effects of changing alloy base, composition, size, and heat treatment.

(d)     Advantages and disadvantages

(e)     Composites—the future?

 

(2)     Brackets

 

(a)     Alloy base (iron and titanium), ceramics (alumina and zirconia), plastics, and hybirds.

(b)     Composition and properties.

(c)     Advantages and disadvantages

(d)     Composites—the future?

 

(3)     Ligatures

 

(a)     Metals, elastomerics, or none at all.

(b)     Composition and properties.

(c)     Advantages and disadvantages

(d)     Composites—the furture?

 

Preparation

 

  1. Contemporary Orthodontics, 3rd edition, Chapter 10, pp 326-339
  2. Kusy: A Review of Contemporary Archwires: Their Properties and Characteristics, The Angle Orthod., 67: 197-208, 1997.
  3. Nikolai R: Orthodontic Wire: A continuing Evolution, Seminars in Orthodontics, Vol 3, No 3, Sept 1997,  pp 157-165.
  4. Santoro M: Pseudoelastic and thermoelasticity of nickel-titanium alloys: A clinical oriented review. Part I: Temperature transitional ranges, Am J orthod Dentofacial Orthop 2001; 119, pp 587-593
  5. Santoro M: Pseudoelastic and thermoelasticity of nickel-titanium alloys: A clinical oriented review. Part I: Deactivation forces, Am J orthod Dentofacial Orthop 2001; 119, pp 594-603
  6. Stuart D: Force Degradation in Elastomeric Chains, Seminars in Orthodontics, Vol 3, No 3, Sept 1997, pp 189-197

 

 Topic: One Couple Systems

Instructor: Dr. Engilman

 

 

 

Forces, moments and couples in tooth movement

Equilibrium conditions

Bracket-Couple possibilities

 

Preparation:

 

 

 

 

  1. Lindauer S. The basics of Orthodontic Mechanics.  Sem Orthod 7:2-15, 2001
  2. Mulligan TF, Common sense mechanics, Parts 1 and 3. J Clin Orthod 13:588-594, 762-766, 1979
  3. Isaacson RJ, Lindauer SJ, Davidovatch M. Ground rules for archwire design. Sem Orthod 1:3-11, 1995
  4. Lindauer SJ, Isaacson RJ. One-couple orthodontic appliance systems. Sem Orthod 1:12-24, 1995
  5. Burstone CJ, Koenig HA, Creative wire bending – the force system from step and V bends, Am J Orthod Dentofac Orthop 93:59-67, 1988
  6. Kuhlberg AJ, Cantilever Springs: Force System and clinical applications, Sem Orthod 7:150-159, 2001
  7. Shroff B, Lindauer S. Leveling and Aligning: Challenges and Solutions. Sem Orthod 7:16-25, 2001

 

 

Topic: Two Couple Systems

Instructor: Dr. Engilman

 

 

 

Forces, moments and couples in tooth movement

Equilibrium conditions

Bracket-Couple possibilities

 

Preparation:

 

 

 

 

 

  1. Davidovitch M, Rebellato J. Utility arches: a two couple intrusion arch.  Sem Orthod 1:25-30, 1995.
  2. Isaacson RJ, Lindauer SJ, Rubenstein LK. Activating a 2x4 appliance. Angle Orthod 63:17-24, 1993
  3. Dake ML, Sinclair PM. A comparison of the Ricketts and Tweed-type arch leveling techniques. Am J Orthod 95:72-78,1989
  4. Isaacson RJ, Rebellato J. Two couple orthodontic appliance systems: torquing arches. Sem Orthod 1:31-36, 1995
  5. Isaacson RJ, Lindauer RJ, Rubenstein LK. Moments with the edgewise appliance—incisor torque control. Am J Orthod 103:428-438, 1992.
  6. Rebellato J, Two-Couple Orthodontic Appliance Systems: Transpalatal Arches, Sem in Orthod Vol 1:44-54 March 1995

 

 

 

 

Topic: Transverse form, Transpalatal Arches

Instructor: Dr. Engilman

 

 

 

 

Preparation:

 

 

 

 

To be announced

Topic: Adjunctive Treatment for Adults

Instructor: Dr. Engilman

 

 

 

 

Preparation:

 

 

 

 

To be announced