ORTHOdontics UPDATE ON CURRENT ISSUES

Transcription

1 ORTHOdontics PG II UPDATE ON CURRENT ISSUES INCLUDES LECTURES ON: CURVE OF SPEE TOOTH TRANSPOSITION DISTRACTION OSTEOGENESIS INCISOR INTRUSION FACULTY: Samar Bou Assi, DDS. Goals: This series of lectures should enable the resident to: 1. Update his knowledge on current issues in orthodontics. 2. Engage constructive discussions in controversial orthodontic subjects. 3. Prepare assignments and presentations on specific topics. Objectives: At the end of these lectures, the resident should be proficient in: 1. Gauging the clinical situation and approach it from the point of view he sees appropriate. 2. Establish the proper treatment plan with alternative treatments that he might switch to in case of complications. COURSE DURATION AND SCOPE: This course is scheduled between March and July for the second year residents. It is given every Monday at a 1.5-hour session between 8:00 a.m. and 9:30 a.m. It includes lectures on the latest update on controversial orthodontic issues.

2 POLICY ON EXAMINATIONS: One examination is given for this course in July, usually part of the final examination. During these lectures, any number of assignments may be given. Their cumulative weight in proportion to the final grade may not exceed 50%. CURVE OF SPEE COURSE OUTLINE 1. WHAT IS THE CURVE OF SPEE? 2. HOW DOES THE OCCLUSAL CURVE DEVELOP? 3. WHY SHOULD WE FLATTEN THE OCCLUSAL CURVE? 4. HOW MUCH SPACE DOES A CURVE OF SPEE REQUIRE TO BE FLATTENED? 5. HOW CAN WE LEVEL THE CURVE OF SPEE? 6. HOW STABLE IS THE LEVELING OF THE CURVE OF SPEE? 1. Spee FG. The gliding path of the mandible along the skull. J Am Dent Assoc. 1980; 100: Hitchcock HP. The curve of Spee in Stone Age man. Am J Orthod 1983; 84: Farella M, Michelotti A, van Eijden TMGJ, Martina R. The curve of Spee and craniofacial morphology: a multiple regression analysis. Eur J Oral Sci 2002; 110: Baragar FA, Osborn JW. Efficiency as a predictor of human jaw design in the sagittal plane. J Biomech 1987; 20: Braun S, Hnat WP, Johnson BE. The curve of Spee revisited. Am J Orthod Dentofacial Orthop 1996; 110: Orthlieb JD. The curve of Spee: understanding the sagittal organization of mandibular teeth. Cranio 1997; 15: De Praeter J, Dermaut L, Martens G, Jagtman AMK. Long-term stability of the leveling of the curve of Spee. Am J Orthod Dentofacial Orthop 2002; 121: Balridge DW. Leveling the curve of Spee: its effect on the mandibular arch length. J Pract Orthod 1969; 3: Proffit WR, Ackerman J. Diagnosis and treatment planning in orthodontics. In: Graber TM, ed. Orthodontics: Current Principals and Techniques. St Louis, Mo: CV Mosby; 1986: Germane N, Staggers JA, Rubenstein L, Revere JT. Arch length considerations due to the curve of Spee: a mathematical model. Am J Orthod Dentofacial Orthop. 1992; 102: Chung TS, Sadowsky PL, Wallace DS, McCutcheon MJ. A three- dimensional analysis of mandibular arch changes following curve of Spee leveling in non-extraction orthodontic treatment. Int J Adult Orthod Orthognath Surg 1997; 12: Mitchell DL, Stewart WL. Documented leveling of the lower arch using metallic implants for reference. Am J Orthod 1973; 63: Woods M. A reassessment of space requirements for lower arch leveling. J Clin Orthod 1986; 20:

3 14. AlQabandi AK, Sadowsky C, BeGole EA. A comparison of the effects of rectangular and round arch wires in leveling the curve of Spee. Am J Orthod Dentofacial Orthop 1999; 116: TOOTH TRANSPOSITION COURSE OUTLINE 1. DEFINITION A. Transposition B. Transposition v/s ectopic eruption C. Transmigration 2. ETIOLOGY A. Primary causes B. Secondary causes 3. CLASSIFICATION A. Peck & Peck B. Attia C. Shapira & kuftinec D. Angle E. Bassigny 4. CLINICAL & RADIOGRAPHIC SIGNS 5. TREATMENT OBJECTIVES AND APPROACH A. Mandibular 2/3 B. Maxillary 2/3 C. Maxillary 3/4 1. Bassigny F. Early treatment of severe dento-maxillary dysharmony: eruption guidance of incisors and canines. Rev Orthop Dento Faciale 1990; 24(2): Shapira Y, Kuftinec MM. Early detection and prevention of mandibular tooth transposition. J Dentistry for Children (Chicago, Ill) 2003; 70(3): Shapira Y, Kuftinec MM. Intrabony migration of impacted teeth. Angle Orthodontist 2003;73(6):738-43; discussion Peck L, Peck S, Attia Y. Maxillary canine-first premolar transposition, associated dental anomalies and genetic basis. Angle Orthod 1993; 63:

4 5. Joshi MR, Shetye SB. Transmigration of mandibular canines: a review of the literature and report of two cases. Quintessence Int 1994;25: Shapira Y, Kuftinec MM. Orthodontic management of mandibular canine-incisor transposition. Am J Orthod 1983; 83: Peck S, Peck L, Kataja M. The palatally displaced canine as a dental anomaly of genetic origin. Angle Orthod 1994; 64: DISTRACTION OSTEOGENESIS COURSE OUTLINE 1. INTRODUCTION A. Definition B. Literature review 2. STAGES OF THE TECHNIQUE 3. KEY FACTORS A. Bone factors B. Distraction factors 4. ADVANTAGES 5. DISADVANTAGES 6. INDICATIONS 7. DISTRACTION & ORTHODONTICS 8. DISTRACTION & TMJ 9. DISTRACTION IN INFANTS 10. FUTURE & DEVELOPMENT 11. CONCLUSION 1. Snyder C C, Levine G A, Swanson H M, Browne E Z,. Mandibular lengthening by gradual distraction: preliminary report. Plast Recon Surg 1973; 51(5): Codivilla A. On the means of lengthening in the lower limbs, the muscles, and tissues which are shortened through deformity. Am J Orthop Surg 1905; 2:

5 3. Karp N S,Thorne C H M, McCarthy J G, Sissons H A. Bone lengthening in the craniofacial skeleton. Ann Plast Surg 1990; 24: Ilizarov G. The principles of the Ilizarov Method. Bull Hosp Jt Dis Orthop Inst 1988; 48: Imola MJ, Hamlar DD, Thatcher G, et al. The versatility of distraction osteogenesis in craniofacial surgery. Arch Facial Plast Surg 2002; 4(1): Cope JB, Samchukov ML. Regenerate bone formation and remodeling during mandibular osteodistraction. Angle Orthod. 2000; 70: Grayson BH, Rowe NM, Hollier LH, Williams JK, McCormick S, Longaker MT, McCarthy JG: The Development of a Vehicle Device for the Delivery of Agents to Bone During Distraction Osteogenesis. J Craniofac Surg 2001; 12: Razdolsky Y, Pensler J, Dessner S. Skeletal distraction for mandibular lengthening with a completely intraoral tooth borne distractor. In: Advances in Craniofacial Orthopedics: Tissue Engineering, 9. Regeneration and Distraction Osteogenesis, Craniofacial Growth Series. Ann Arbor, Mich: Center for Human Growth and Development, The University of Michigan. 1998: INCISOR INTRUSION COURSE OUTLINE 1. INTRODUCTION 2. INDICATIONS 3. MECHANICS 4. MAXILLARY INCISORS INTRUSION 5. MANDIBULAR INCISORS INTRUSION 6. ROOT RESORPTION 7. PERIODONTAL CONSIDERATIONS. 8. STABILITY 9. CONCLUSION 1. Melsen B, Agerbaek N, Markenstam G. Intrusion of incisors in adult patients with marginal bone loss. Am J Orthod Dentofacial Orthop 1989; 96(3): Engel G, Cornforth G, Damerell JM, Gordon J, Levy P, McAlpine J, Otto R, Walters R, Chaconas S. Treatment of deep-bite cases, Am J Orthod Dentofacial Orthop 1980; 77(1) : Shields TE, Little RM and Chapko MK. Stability and relapse of mandibular anterior alignement Am J Orthod Dentofacial Orthop 1985; 87(1) : Melsen B. Tissue reaction following application of extrusive and intrusive forces to teeth in adult monkeys. Am J Orthod 1986; 89(6):

6 5. Woods MG. The mechanics of lower incisor intrusion: experiments in nongrowing Am J Orthod Dentofacial Orthop 1988; 93(3): Otto RL, Anholm JM, Engel GA. A comparative analysis of intrusion of incisor teeth achieved in adults and children according to facial type. Am J Orthod Dentofacial Orthop 1980; 77(4): Schudy F. The occlusal plane, it's origin, development and correction, ISBN, Philippe J. La supraclusion et ses traitements, EDITION S.I.D. 9. Burstone CR. Deep overbite correction by intrusion Am J Orthod Dentofacial Orthop 1977; 77(1): Mulligan FT. Common sense mechanics in everyday orthodontics, CSM Publishing, Phoenix, Garcia. R. Le role de l'orthodontiste dans les traitements chirurgico-orthodontiques, Rev. Orthop Dento Faciale 1988 ; 22: Dake ML & Sinclair PM.Comparision of Ricketts and Tweed - type arch leveling techniques. Am J Orthod Dentofacial Orthop 1989; 95(1): Al Qabandi A, Sadowsky C, Selke T. A comparision of continous archwires and utility archwires for leveling the curve of Spee. Word J Orthod 2002; 3: BenchCF. Gugino RW, Hilgers JJ. Bioprogressive therapy. Part 2: Principles of bioprogressive therapy. J Clin Orthod 1977; 11: De Munck.D.Apical root resortion of upper incisors caused by intrusion Am J Orthod Dentofacial Orthop 1986;5: Copeland S. Green LJ.Root resorption in maxillary central incisors. Am J Orthod Dentofacial Orthop 1986:89(1); McFadden WM, Engstrom C, Engstrom H, Anholm JM. Relationship between incisor intrusion and root shortening. AJO-DO 1989;96(5): Ortial P. Adolesecent Class II, div. 2, treatment with or without premolar extraction, Orthop Dento Faciale. 1999; 33: Murakami T. Yokota S and Takahama Y. Periodontal changes after induced intrusion of upper incisors. Am J Orthod Dentofacial Orthop 1989; 95(2): Polson AM, Subtelny JD, Meitner SW, Polson AP, Sommers EW, Iker HP, Reed BE.Long-term periodontal status after orthodontic treatment Am J Orthod Dentofacial Orthop 1988; 93(1):51-8.